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1333-84-2 Usage

Chemical Description

Alumina is a catalyst used in the hydrogenation reaction.

Check Digit Verification of cas no

The CAS Registry Mumber 1333-84-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,3 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1333-84:
(6*1)+(5*3)+(4*3)+(3*3)+(2*8)+(1*4)=62
62 % 10 = 2
So 1333-84-2 is a valid CAS Registry Number.
InChI:InChI=1/Al.H2O/h;1H2/q+3;

1333-84-2SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name dialuminum,oxygen(2-),hydrate

1.2 Other means of identification

Product number -
Other names Aluminum oxide,hydrate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1333-84-2 SDS

1333-84-2Related news

Fabrication and characterization of ALUMINA (cas 1333-84-2) fiber by anodic oxidation and chemical dissolution processes09/07/2019

Alumina fiber was fabricated by an anodic oxidation process from pure aluminum or a chemical dissolution process from porous alumina. In the experiments, porous alumina layer was firstly formed on the surface of pure aluminum by anodic oxidation process in phosphoric acid electrolyte. The alumin...detailed

Electrode-coated ALUMINA (cas 1333-84-2) separators for lithium-ion batteries - effect of particle size and distribution of ALUMINA (cas 1333-84-2) powders09/06/2019

Lithium-ion batteries prepared with ceramic, powder-coated electrode separators exhibit improved safety and performance characteristics compared to those with polymeric separators prone to thermal runaway. However, electrode-coated alumina separators are thinner and more flexible than standalone...detailed

Preparation of low-shrinkage and high-performance ALUMINA (cas 1333-84-2) ceramics via incorporation of pre-sintered ALUMINA (cas 1333-84-2) powder based on Isobam gelcasting09/05/2019

Mechanically robust alumina ceramics with low shrinkage were successfully prepared via gelcasting using Isobam as the gelling agent and pre-sintered alumina powder as the raw material for the first time. The influence of amount of pre-sintered alumina powder and powder's pre-sintering tempe...detailed

Original ArticleCreep study on ALUMINA (cas 1333-84-2) and ALUMINA (cas 1333-84-2)/SWCNT nanocomposites09/04/2019

Alumina and alumina/SWCNT nanocomposites have been sintered by spark plasma sintering, obtaining relative densities higher than 99%. Microstuctural characterization revealed a grain microstructure in the submicron range, where alumina/SWCNT nanocomposites exhibited a good CNTs dispersion thought...detailed

Nano-structured ALUMINA (cas 1333-84-2) reinforced with NbC09/01/2019

The incorporation of refractory hard particles in alumina-based composites may inhibit grain growth of the matrix, contributing significantly to improve the mechanical properties of the composite. Al2O3-NbC nanocomposites were uniaxially hot-pressed at 1500 °C in an inert atmosphere and their m...detailed

1333-84-2Relevant articles and documents

Synthesis of thermally stable Cs-doped alumina nanoparticles by microemulsion method

You, Zhixiong,Balint, Ioan,Aika, Ken-Ichi

, p. 1090 - 1091 (2002)

Cs-doped alumina nanoparticles were synthesized by microemulsion method and then characterized. Cs-doping greatly improved aluminas thermal stability. For an optimum molar ratio of Cs/Al = 1/11 the structure of γ-alumina can be preserved even at temperatu

Assessment of the reaction of SiC powders with iron-based alloys

Terry, B. S.,Chinyamakobvu, O. S.

, (1993)

The degree of reaction and dispersion achieved when SiC powders are brought into contact with liquid iron-based alloys has been assessed by a levitation dispersion test SiC was found to react rapidly with molten iron matrices to form iron silicides and graphite. Attempts to generate protective TiC or Al2O3 coatings on SiC in situ in liquid iron proved unsuccessful; neither was precoating SiC and Ni and/or Cu successful in providing protection against molten iron alloys. Unprotected SiC also reacted readily with iron in the solid state (1000-1200°C). Precoating with Ni, however, provides protection and prevents SiC dissolution and silicide formation during sintering at such temperatures.

Preparation of Cast Mo2B5 by Self-Propagating High-Temperature Synthesis Metallurgy Methods

Gorshkov,Sachkova,Khomenko, N. Yu.

, p. 1216 - 1222 (2018)

Abstract—: This paper reports the preparation of cast dimolybdenum pentaboride by a self-propagating high-temperature synthesis (SHS) metallurgy method. Experiments were carried out in SHS reactors at an initial excess gas (Ar) pressure p0 = 5

Alkali corrosion resistant coatings for Si3N4 ceramics

Li,Hirschfeld,Brown

, p. 4455 - 4461 (1997)

The use of ceramic oxide coatings on silicon nitride is one method to improve its alkali corrosion resistance. Four oxide coatings, including (Ca0.6, Mg0.4) Zr4(PO4)6 (CMZP), zirconia, mullite and alu

Structural and compositional dependence of gadolinium-aluminum oxide for the application of charge-trap-type nonvolatile memory devices

Park, Youngmin,Park, Jong Kyung,Song, Myeong Ho,Lim, Sung Kyu,Oh, Jae Sub,Joo, Moon Sig,Hong, Kwon,Cho, Byung Jin

, (2010)

The structural and compositional dependence of gadolinium-aluminum oxide (GdAlO) for application to nonvolatile memory is investigated. An addition of Gd into AlO reduces the leakage current, which improves the erase window. The GdAlO film crystallizes into many different phases after annealing depending on the Gd percentage when the amount of Gd exceeds 49%. The crystallization of the GdAlO film causes a change in the band gap of the GdAlO film, resulting in a change of the retention properties. It is also found that crystallized GdAlO is more vulnerable to the generation of traps by electrical stress. The results indicate that careful optimization of the Gd percentage in GdAlO is necessary to utilize the benefit of GdAlO with minimum deterioration in the charge retention property.

Arrangement of ferritin molecules on a gold disk array fabricated on highly ordered anodic porous alumina substrate

Masuda, Hideki,Hogi, Hiromi,Nishio, Kazuyuki,Matsumoto, Futoshi

, p. 812 - 813 (2004)

An ordered array of ferritin, in which the arrangement of ferritin coincided with the arrangement of Au disks, was prepared on Au nanodisk arrays fabricated on a highly ordered anodic porous alumina substrate. Selective adsorption of ferritin onto the Au disk by controlling the modification time and ferritin concentration in the modification solution was confirmed by scanning electron microscopy.

Plutonium and Americium Aluminate Perovskites

Vigier, Jean-Fran?ois,Popa, Karin,Martel, Laura,Manara, Dario,Dieste Blanco, Oliver,Freis, Daniel,Konings, Rudy J. M.

, p. 9118 - 9126 (2019)

Both AmAlO3 and PuAlO3 perovskites have been synthesized and characterized using powder X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), and 27Al magic angle spinning nuclear ma

The catalytic and physico-chemical properties of Ni/MgF2-MgO catalysts

Zieliński, Micha?

, p. 15 - 22 (2012)

The MgF2-MgO system of different quantitative compositions was tested as a potential support for nickel catalysts to be used for hydrogenation of toluene. The catalytic performance of the system was studied as a function of the MgF2/

Synthesis of CoFe2O4 nanowire arrays by sol-gel template method

Ji, Guangbin,Tang, Shaolong,Xu, Baolong,Gu, Benxi,Du, Youwei

, p. 484 - 489 (2003)

CoFe2O4 nanowire arrays with an average diameter of about 40 nm were prepared in porous anodic aluminum oxide (AAO) template using sol-gel process. Transmission electron microscopy (TEM) diffraction pattern and X-ray diffraction (XRD) showed that the nanowires were polycrystalline phase. Magnetic measurements showed the arrays of nanowires did not show a preferential magnetic orientation, the reason was briefly discussed. The effect of heating rate on the structure and magnetic properties of CoFe 2O4 nanowire arrays was investigated. The result showed that the coercivity decreased with the increase of the heating rate.

Hierarchical structured Ni nanoring and hollow sphere arrays by morphology inheritance based on ordered through-pore template and electrodeposition

Duan, Guotao,Cai, Weiping,Luo, Yuanyuan,Li, Zhigang,Lei, Yong

, p. 15729 - 15733 (2006)

Fabrication of micro/nano-hierarchical Ni ordered nanostructured arrays is demonstrated by electrochemical deposition on the ordered alumina through-pore template induced by solution-dipping the colloidal monolayer. The morphology of the Ni nanostructured arrays exhibits a ringlike or hollow spherical structure depending on the template geometry and appropriate deposition parameters. The skeletons of the arrays are of floc- or flakelet-like fine structure on the nanoscale. The formation of such morphologies is attributed to the preferential growth along the inner wall of the alumina pores, while the nanoflakelet fine structure originates from a morphology inheritance process or the transitional product Ni(OH)2 which leads to the final nanostructured Ni crystals. This morphology inherence could be useful in the field of nanofabrication. Such micro/nanohierarchically structured arrays show good magnetic properties and will find applications in the fields of catalysis, magnetics, optoelectrics, surface-enhanced Raman scattering (SERS), and new nanodevices.

Synthesis, Structural Characteristics, and Adsorption Properties of Macroporous Alumina

Khokhlova

, p. 1589 - 1591 (2019)

Abstract: Macroporous alumina is synthesized via precipitation with sulfuric acid from a sodium aluminate solution. It is established that introducing a coagulating agent (sodium chloride) preventing macrogel formation makes it possible to obtain highly porous samples of alumina with specific surface areas of ~100 m2/g, a large pore volume of 1.6–1.7 cm3/g, and an average pore diameter of 50–75 nm. According to the adsorption isotherms and the pH dependence of hemoglobin adsorption that such samples have a high capacity for protein macromolecules. The maximum adsorption of hemoglobin is ~500 mg/g, and is observed at pH 6–7. Adsorption falls substantially when the pH is reduced to 4 or increased to 9, and it is close to zero at?pH?11.

Kim, T. W.,Lim, H.,Zheng, Y. D.,Reeder, A. A.,Mccombe, B. D.

, (1992)

Hydrogen Barrier Layer Against Silicon Oxidation during Atomic Layer Deposition of Al2 O3 and Hf O2

Frank, Martin M.,Wang, Yu,Ho, Ming-Tsung,Brewer, Rhett T.,Moumen, Naim,Chabal, Yves J.

, p. G44-G48 (2007)

Growth at moderate temperatures, below ~100°C, is shown to prevent interfacial silicon oxidation during atomic layer deposition of high-permittivity (high- κ) gate dielectrics on hydrogen-terminated Si(100). Trimethylaluminum, employed for aluminum oxide

Structure and optical properties under VUV excitation of Mn2+ doped alkaline earth aluminate phosphors

Noetzold,Wulff,Jilg,Kantz,Schwarz

, p. 930 - 940 (2006)

Polycrystalline hexagonal alkaline earth aluminates M3Al 16O27 with M3: BaMg2, Ba 1.5Mg1.5, and Sr1.5Mg1.5 doped by divalent manganese and prepared by solid

Electrical property improvements of high- k gate oxide by in situ nitrogen incorporation during atomic layer deposition

Maeng,Lim,Kwon, Soon-Ju,Kim

, (2007)

Atomic layer deposition (ALD) process for oxynitrides of high- k gate dielectrics employing N H4 OH as a single source for reactants, water and N H3, was studied. By this method, nitrogen was incorporated up to 1-3 at. % for ALD Al2 O3 and Ta2 O5 films from metal organic precursors. A comparative study with water based ALD showed that the electrical properties were improved. The leakage current of oxide films from N H4 OH based ALD had been reduced and, more importantly, the dielectric strength was found to be enhanced by more than two orders of magnitude from a time dependent dielectric breakdown measurement.

Microscopic observations of voids in anodic oxide films on aluminum

Huang,Hebert,Chumbley

, p. B379-B386 (2004)

The relationship was explored between nanoscale voids in anodic aluminum oxide films and the surface condition of aluminum samples prior to anodizing. Transmission electron microscopy (TEM) detected voids on the order of 10 nm in anodic films. Atomic forc

Microstructure and oxidation behavior of new refractory high entropy alloys

Liu,Wang,Zhang,Tang,Zhang

, p. 162 - 169 (2014)

High-entropy alloys (HEAs) are defined as the alloys composed of at least five principal elements in equimolar or near equimolar ratios, which can facilitate the formation of simple solid solutions during solidification. Recent studies suggested that the refractory HEAs exhibited great promise for high temperature structural materials. However, their oxidation behavior had received little attention. In the present study, Cr, Al and Si elements were added to improve the oxidation resistance, four types of new refractory HEAs were designed and synthesized, including NbCrMoTiAl0.5 (H-Ti), NbCrMoVAl0.5 (H-V), NbCrMoTiVAl0.5 (H-TiV) and NbCrMoTiVAl0.5Si0.3 (H-TiVSi0.3). Their microstructures and oxidation behavior were studied. As expected, these refractory HEAs mainly consist of a simple body-centred cubic (BCC) refractory metal solid solution (RMss) due to the high mixing entropy effect. Solidification process and thermodynamic analysis were investigated to explain the formation mechanism of their microstructures. For all the refractory HEAs, the oxidation kinetics at 1300 C follows a linear behavior. The oxidation resistance of the HEAs is significantly improved with Ti and Si addition, but reduced with V addition.

Improving cyclability of 5 V cathodes by electrochemical surface modification

Eftekhari, Ali

, p. 616 - 617 (2004)

A simple electrochemical procedure is proposed for surface modification of cathode materials. A metal oxide-retaining layer deposited electrochemically on the electroactive material avoids its direct contact with the electrolyte. For 5 V cathodes, which are extremely oxidant at charged state, this action significantly enhances the cyclability. In addition, the own stability of the metal oxide-retaining layer deposited on the cathode surface has a significant effect on the cyclability, which can be enhanced by inducing a mechanical force during the electrodeposition process.

Supercritical-carbon dioxide-assisted cyclic deposition of metal oxide and metal thin films

Barua, Dipak,Gougousi, Theodosia,Young, Erin D.,Parsons, Gregory N.

, (2006)

Thin films of aluminum oxide and palladium were deposited on silicon at low temperatures (70-120 °C) by a cyclic adsorption/reaction processes using supercritical CO2 solvent. Precursors included Al(hfac) 3, Al(acac) 3, and Pd(hfac) 2, and aqueous H2 O2, tert-butyl peracetate, and H2 were used as the oxidants or reductants. For the precursors studied, growth proceeds through a multilayer precursor adsorption in each deposition cycle, and film thickness increased linearly with the number of growth cycles.

Atomic layer deposition ZnO:N flexible thin film transistors and the effects of bending on device properties

Kim, Jae-Min,Nam, Taewook,Lim,Seol,Lee,Kim, Doyoung,Kim, Hyungjun

, (2011)

ZnO:N flexible thin film transistors were fabricated by atomic layer deposition on polyethylene naphthalate substrates and the effects of bending on the device properties investigated. The threshold voltage and saturation mobility were observed to change with respect to the amount of substrate bending. These modulations can be explained in terms of piezoelectric nature of in ZnO. In comparison with the previously reported single crystal nanowires ZnO field effect transistors, the amount of the electrical property modulation under bent condition is significantly reduced and our report shows a much improved stability for ZnO:N as a flexible device material.

Oxidative coupling of alcohols and amines to an imine over Mg-Al acid-base bifunctional oxide catalysts

Song, Jinling,Yu, Guiyang,Li, Xi,Yang, Xuwei,Zhang, Wenxiang,Yan, Wenfu,Liu, Gang

, p. 309 - 318 (2018)

A series of Mg-Al mixed oxide catalysts are prepared and introduced as efficient irreducible catalysts for the oxidative coupling of alcohols and amines to imine. The structure and surface properties of Mg-Al oxides are modulated by changing the Mg/Al ratios, calcination temperature and treatment with probe molecules. Detailed characterization, including X-ray diffraction, 27Al magic angle spinning nuclear magnetic resonance spectroscopy, N2-adsorption, NH3-temperature-programmed desorption, CO2-temperature-programmed desorption and X-ray photoelectron spectroscopy are carried out to determine the physicochemical properties of these catalysts. The Mg-Al oxides with Mg/Al = 3 exhibit the highest activity in the reaction, which possess a large number of surface weak basic sites and a relatively small number of weak acidic sites. The role of the acidic and basic sites in the reaction process is systematically investigated, and are shown to serve as adsorption and activation sites for amines and alcohols, respectively. Under the synergistic effect of these acid-base centers, the oxidative coupling process successfully occurs on the surface of Mg-Al mixed oxides. Compared with the acidic sites, the weak basic sites play a more important role in the catalytic process. The acidic sites are the catalytic centers for the benzyl alcohol activation, which control the reaction rate of the oxidative coupling reaction.

Magnetic composites based on hybrid spheres of aluminum oxide and superparamagnetic nanoparticles of iron oxides

Braga, Tiago P.,Vasconcelos, Igor F.,Sasaki, José M.,Fabris,de Oliveira, Diana Q.L.,Valentini, Antoninho

, p. 633 - 637 (2010)

Materials containing hybrid spheres of aluminum oxide and superparamagnetic nanoparticles of iron oxides were obtained from a chemical precursor prepared by admixing chitosan and iron and aluminum hydroxides. The oxides were first characterized with scanning electron microscopy, X-ray diffraction, and M?ssbauer spectroscopy. Scanning electron microscopy micrographs showed the size distribution of the resulting spheres to be highly homogeneous. The occurrence of nano-composites containing aluminum oxides and iron oxides was confirmed from powder X-ray diffraction patterns; except for the sample with no aluminum, the superparamagnetic relaxation due to iron oxide particles were observed from M?ssbauer spectra obtained at 298 and 110 K; the onset six line-spectrum collected at 20 K indicates a magnetic ordering related to the blocking relaxation effect for significant portion of small spheres in the sample with a molar ratio Al:Fe of 2:1.

Photoluminescence oscillations in porous alumina films

Huang,Pu,Shi,Han,Zhang,Zheng

, (2006)

The dominant oscillation shown in the laser-excited photoluminescence spectrum of the porous alumina film can be ascribed to the interference within a Fabry-Prot optical cavity where the separation between two neighboring oscillations is highly sensitive to the film's thickness and refractive index. The method, designated as photoluminescence oscillation, endows photoluminescence spectrum with another dimension and results in a nondestructive method for the measurement of the thickness and refractive index with a high resolution.

Effect of heating rates on TG-DTA results of aluminum nanopowders prepared by laser heating evaporation

Chen,Song,Lv,Wang,Xie

, p. 141 - 145 (2009)

Aluminum (Al) nanopowders with mean diameter of about 50 nm and passivated by alumina (Al2O3) coatings were prepared by an evaporation route: laser heating evaporation. Thermal properties of the nanopowders were investigated by simul

Permeation measurements and modeling of highly defective Al2 O3 thin films grown by atomic layer deposition on polymers

Carcia,McLean,Reilly

, (2010)

We measured the thickness and temperature dependence of moisture permeation in highly defective (10-20 at. % hydrogen) Al2 O3 thin films grown by atomic layer deposition on polymer substrates. We found that when films were grown at higher temperature or were thicker, independent of growth temperature, they were better moisture barriers. We determined the threshold thickness for measurement-limited barrier performance to be 7.5 nm for growth at 100 °C compared to 9.6 nm at 50 °C. We explained the permeability of these highly defective films with a new model, which relates moisture permeability to a critical density of defects and not due to pinholes.

Optical, electrical and dielectric properties of mixed metal oxides derived from Mg-Al Layered Double Hydroxides based solid solution series

Lahkale,Sadik,Elhatimi,Bouragba,Assekouri,Chouni,Rhalmi,Sabbar

, (2021/11/04)

In this work, we investigated the effect of aluminum content on optical, electrical and dielectric properties of mixed metal oxides (MMOs), obtained from calcination at 726 K of solid solution series based on nitrate intercalated Mg1-xAlx Layered Double Hydroxides (x = 0.167, 0.20, 0.25, 0.33). Subsequently, the MMOs were characterized by X-Ray Diffraction, and analyzed by Inductively Coupled Plasma, Scanning Electron Microscopy, Diffuse Reflectance Spectroscopy and Impedance Spectroscopy. It was found a shift of light absorption towards shorter wavelengths, and an increase of conductivity and dielectric constant when the aluminum content increased. Higher aluminum content exhibited strong ultraviolet light absorption with average band gap of 6.29 eV, and also manifested high reflectance in visible and near-infrared wavelengths, whereas lower aluminum content showed lower values of conductivity, dielectric constant and dielectric loss tangent. Moreover, the electrical, dielectric and optical parameters of MMOs were reported and discussed.

Electroluminescent polycrystalline Er-doped Lu3Al5O12 nanofilms fabricated by atomic layer deposition on silicon

Ma, Zhiqiang,Sun, Jiaming,Xu, Jing,Yang, Li,Yang, Yang

, (2021/07/06)

The sub-nanometer composition and interlayer thicknesses of the silicon-based Lu2O3/Al2O3 nanolaminates are regulated by atomic layer deposition, to fabricate polycrystalline Er-doped Lu3Al5/sub

Interesterification of triglycerides with methyl acetate for the co-production biodiesel and triacetin using hydrotalcite as a heterogenous base catalyst

Dhawan, Manali S.,Barton, Scott Calabrese,Yadav, Ganapati D.

, p. 101 - 111 (2020/08/21)

Biodiesel is a renewable fuel with several advantages over petro-based fuels and is conventionally produced by the transesterification of triglycerides with alcohols. Chemical interesterification of triglycerides is a good alternative as compared to transesterification, as it yields a value-added compound, triacetin, as a co-product instead of the already abundant commodity, glycerol. In this work, interesterification of soybean oil was carried out with methyl acetate to co-produce biodiesel and triacetin, using calcined hydrotalcite as a heterogeneous base catalyst. Several base catalysts were tested for this reaction. Calcined Mg-Al hydrotalcite (Mg:Al mole ratio – 3:1) was found as the best catalyst for achieving 95.9 % conversion of soybean oil triglycerides in 4 h and yielding 5.3 % selectivity of triacetin along with the value-added intermediates - monoacetindiglycerides and diacetinmonoglycerides, produced with a selectivity of 46 % and 48.7 %, respectively. The optimum reaction conditions were found at an oil to methyl acetate mole ratio of 1:50, catalyst loading of 0.04 g/cm3 and a temperature of 200 oC. The catalysts were fully characterized before and after the reaction, and were found to possess high surface area with both basic and acidic sites. The effect of various reaction conditions on the rate of reaction, conversion of triglycerides and selectivity of triacetin were studied. The concentration profiles of the reactants, intermediates and products obtained at different temperatures were used to obtain the kinetic rate constants and the activation energy of each parallel step was evaluated. Reusability studies showed that the catalyst was stable and reusable up to three cycles.

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