2958-75-0

Usage

Uses

Used in Personal Care and Household Products:
DECAHYDRO-1-METHYLNAPHTHALENE is used as a fragrance ingredient in personal care and household products for its long-lasting scent and sweet odor, enhancing the sensory experience of perfumes, colognes, and scented body care products.
Used in Synthetic Resins and Polymers:
In the chemical industry, DECAHYDRO-1-METHYLNAPHTHALENE serves as a solvent for synthetic resins and polymers, facilitating the manufacturing process and improving the quality of the final products.
It is crucial to handle DECAHYDRO-1-METHYLNAPHTHALENE with care due to its potential to cause irritation to the skin, eyes, and respiratory system if not used properly.

InChI:InChI=1/C11H20/c1-9-5-4-7-10-6-2-3-8-11(9)10/h9-11H,2-8H2,1H3

Upstream product

• 90-12-0 1-Methylnaphthalene 
• 91-57-6 2-Methylnaphthalene 
• 62702-04-9 (+/-)-8-methyl-cis-1,2,3,4,4a,5,6,8a-octahydro-naphthalene 
• 64-19-7 acetic acid 

Downstream Products

• 90-12-0 1-Methylnaphthalene 

Relevant academic research and scientific papers

A new precursor for synthesis of nickel-tungsten sulfide aromatic hydrogenation catalyst

The unsupported NiWS-catalyst was obtained from the precursor [Ph3S]2Ni(WS4)2 in a hydrocarbon medium (in situ) for hydrogenation bicyclic aromatic compounds. The precursor [Ph3S]2Ni(WS4)2 and the catalyst prepared on its basis were studied by the X-ray diffraction and X-ray absorption methods, XPS and TEM. It was found that the new catalyst formed in situ contains tungsten sulfide and nickel sulfide nanophases. Tungsten sulfide, which has a layered structure, partially forms an insertion compound with nickel that enters between the WS2 layers and bonds covalently to sulfur. The proposed catalyst has proved to be active in the hydrodearomatization processes of model aromatic compounds (naphthalene, methylnaphthalenes) and exhibited the maximum selectivity with the formation of decalins compared to other earlier studied catalysts formed from other precursors in the reaction medium.

Application of Ni-W Sulfide Catalysts Prepared In Situ from Embryonic and Highly Crystalline ZSM-5 Zeolites in Hydrocracking Reaction of 1-Methylnaphthalene

Abstract: The paper reports the synthesis of embryonic and highly crystalline ZSM-5zeolites withSiO2/Al2O3ratios of 50 to 400, as well as the examination and comparative evaluation oftheir physicochemical properties by XRD, low-temperature nitrogenadsorption/desorption, ammonia TPD, and TEM methods. The Ni-W sulfide catalystsprepared in situ from the embryonic andhighly crystalline ZSM-5 were investigated in a hydrocracking reaction of1-methylnaphthalene (50 atm H2, 380°C, 5 h). Thecatalytic systems based on embryonic ZSM-5 were found to promote, to a largerextent, the hydrogenation and migration of the methyl group on the naphthalenering.

Catalytic activity of in situ synthesized MoWNi sulfides in hydrogenation of aromatic hydrocarbons

MoWNi–sulfide catalysts were obtained in situ by thermal decomposition of metal–polymer precursors based on the copolymers of polymaleic anhydride in a hydrocarbon raw material. The activity of the synthesized catalysts in hydrogenation of bicyclic aromatic hydrocarbons was studied, and the composition and structure of active phase nanoparticles were determined.

Synthesis of nickel-tungsten sulfide hydrodearomatization catalysts by the decomposition of oil-soluble precursors

Nickel-tungsten sulfide catalysts for the hydrogenation of aromatic hydrocarbons have been prepared by the in situ decomposition of an oil-soluble tungsten hexacarbonyl precursor in a hydrocarbon feedstock using oil-soluble nickel salt nickel(II) 2-ethylhexanoate as a source of nickel. The in situ synthesized Ni-W-S catalyst has been characterized by X-ray photoelectron spectroscopy. The activity of the resulting catalysts has been studied in the hydrogenation of bicyclic aromatic hydrocarbons and dibenzothiophene conversion in a batch reactor at a temperature of 350°C and a hydrogen pressure of 5.0 MPa. It has been shown that the optimum W: Ni molar ratio is 1: 2. Using the example of the hydrofining of feedstock with high sulfur and aromatics contents, it has been shown that the synthesized catalyst exhibits high activity in the hydrogenation of aromatic hydrocarbons.

The hydrogenation of aromatic-naphthalene with Ni2P/CNTs

Ni2P/CNTs was synthesized using an impregnation method. XPS revealed that CNTs could affect the electronic properties of bulk Ni2P. The catalyst shows superior activity for HYD of naphthalene with a conversion of 99%, and demonstrates superior tolerance towards potential catalyst poisons, which is higher than Ni/CNTs with a conversion of 89%.

Nickel-tungsten sulfide aromatic hydrocarbon hydrogenation catalysts synthesized in situ in a hydrocarbon medium

Nickel-tungsten sulfide nanocatalysts for the hydrogenation of aromatic hydrocarbons (HCs) have been prepared by the in situ decomposition of a nickel thiotungstate precursor in a HC feedstock using 1-butyl-1-methylpiperidinium nickel thiotungstate complex [BMPip]2Ni[WS4]2 as the precursor. The in situ synthesized particles have been characterized by X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. It has been shown that the resulting Ni-W-S particles are nanoplates associated in multilayer agglomerates; the average length of the Ni-W-S particles is 6 nm; the average number of layers in the multilayer packaging is three. The catalytic activity of the synthesized catalysts has been studied in the hydrogenation of model mixtures of mono- and bicyclic aromatic HCs and in the conversion of dibenzothiophene in a batch reactor at a temperature of 350°C and a hydrogen pressure of 5.0 MPa. It has been shown that the studied catalysts can be used for the hydrofining of light cycle oil.

Conversion of decalin and 1-methylnaphthalene over AlSBA-15 supported Pt catalysts

Platinum catalysts (1.5 wt.%) containing AlSBA-15 obtained with various aluminium precursors were tested for activity in 1-methylnaphthalene hydrogenation. Experiments were carried out in a continuous-flow system at atmospheric pressure (240-350 °C, W/F = 0.8 g s/cm3). It was found that 1-methylnaphthalene conversion over Pt-loaded catalysts was not influenced by the aluminium precursor used in the preparation of the Pt/AlSBA-15 catalysts. However, the Pt catalyst prepared with AlSBA-15 obtained from aluminium sulphate provided a higher cis-methyldecalins/trans-methyldecalins ratio in the reaction products as compared to the catalysts obtained with aluminium nitrate or aluminium isopropoxide. Consideration was also given to the influence of platinum amount (0.5, 2.5 and 4.5 wt.%) on the catalytic performance of bifunctional Pt/AlSBA-15 catalysts (AlSBA-15 obtained with aluminium sulphate) in decalin hydroconversion. It was shown that impregnation of AlSBA-15 with H2PtCl6 increased Bronsted acidity. Investigations into decalin conversion were conducted in a continuous-flow system with a fixed-bed reactor (5 MPa, 300-380 °C, H2:CH = 500 N m3/m3; WHSV = 2 h-1). Incorporation of 0.5 wt.% Pt into AlSBA-15 yielded a catalyst with the highest dispersion of the platinum phase and the highest yield of ring opening products, amounting to 26.4 wt.% at 380 °C.