8031-47-8

Upstream product

• 107-08-4 1-iodo-propane 
• 75-03-6 ethyl iodide 
• 540-37-4 p-aminoiodobenzene 
• 75-30-9 2-iodo-propane 
• 1950-77-2 benzenesulfonyl iodide 
• 7732-18-5 water 
• 7681-82-5 sodium iodide 
• 7681-65-4 copper(l) iodide 
• 13450-95-8 germanium tetraiodide 
• 7790-93-4 chloric acid 
• 7681-11-0 potassium iodide 
• 14900-04-0 triiodide^(1-) 
• 14362-44-8 iodide 
• 15454-31-6 iodate 

Downstream Products

• 10153-97-6 neoxanthin 
• 93315-03-8 8-iodo-5,7-dimethoxy-2-phenyl-chroman-4-one 
• 92025-72-4 [3-(3,5-dimethyl-pyrazol-1-yl)-[1,2,4]thiadiazol-5-yl]-phenyl-amine 
• 7495-50-3 1-(4-chlorophenyl)-7-chloro-2,3-naphthalenedicarboxylic anhydride 
• 34646-21-4 1-benzyl-2-methylpyridin-1-ium iodide 
• 109988-49-0 5,5'-diphenyl-1,3,1',3'-tetrahydro-4,4'-disulfanediyl-bis-imidazole-2-thione 
• 469-28-3 (+)-1-hydroxypinoresinol dimethyl ether 
• 5469-33-0 cyclohexylmethyl iodide 
• 5057-98-7 cis-1,2-cyclopentanediol 
• 932-88-7 1-iodo-2-phenylethyne 
• 4186-52-1 2,4-diiodo-6-methyl-phenol 
• 20469-63-0 1-iodo-2,4-dimethoxybenzene 
• 90794-33-5 4-iodophenoxyacetic acid ethyl ester 
• 19829-56-2 4,4'-dibromobibenzyl 

Relevant academic research and scientific papers

LABORATORY SCALE DEMONSTRATION OF THE Mg-S-I CYCLE FOR THERMOCHEMICAL HYDROGEN PRODUCTION

The Mg-S-I water splitting cycle was demonstrated on a laboratory scale by constructing an apparatus for repeated operations of chemical reactions of the whole cycle and by the circulation of reactants through purely thermochemical proceses below 1000 deg C.Electric furnaces and quartz glass reactors were used.Sixteen times of cycle operations were performed in 16 h with production rates of 0.3 liter H2/h and 0.15 liter O2/h.

Synthesis, structural and magnetic characterizations of a dinuclear copper(II) complex with an (N,S,O) donor ligand: Catecholase and phenoxazinone synthase activities

A new dinuclear Cu(II) complex (1) was synthesized and crystallographically characterized. Each of the Cu(II) centres has penta coordination and been found to adopt square pyramidal geometry. Variable temperature magnetic measurements showed that there is weak ferromagnetic interaction between the Cu(II) centres in 1. 1 shows catecholase as well as phenoxazinone synthase activities in different solvents. The turn over numbers for the catecholase activity were 4.02 × 103 h?1 (MeOH) and 9.57 × 103 h?1 (MeCN), and that of phenoxazinone synthase activity were 1.065 × 103 h?1 (MeOH), 2.13 × 102 h?1 (MeCN) and 2.844 × 103 h?1 (DCM).

Mesoporous carbon supported platinum nanocatalyst: Application for hydrogen production by HI decomposition reaction in S-I cycle

Platinum supported on carbon as a catalyst is widely reported and have a wide range of applications ranging from fuel cell application to hydrogenation reactions, where structure and properties of carbon support play an important role in the functioning of the catalyst. Mesoporous carbon supported platinum nanocatalyst was synthesized by hard templating route using mesoporous silica as template. The catalyst prepared has been characterized by X-ray diffraction, Raman, SEM, TEM, XPS and BET surface area. This catalyst has been employed for liquid phase HI decomposition reaction of sulfur iodine thermochemical cycle for production of hydrogen. The catalyst was evaluated for its activity for HI decomposition reaction and stability in the reaction environment. From present study we conclude that Pt supported on mesoporous carbon is a suitable and stable catalyst for liquid phase HI decomposition reaction.

Formation of volatile iodine compounds under hot concentrated acid conditions (nitric acid or aqua regia) and in diluted acid solutions with or without thiocyanate

It is reported that iodine volatilization can occur in any elemental analysis of total iodine by ICP-MS. This problem affects the accuracy of the results, and it has been neither rationalized nor solved up to now. In this work, the formation of volatile iodine compounds in concentrated acid solutions (nitric acid or aqua regia) under microwave heating was studied by UV–Vis spectrophotometry, linear sweep voltammetry, and cyclic voltammetry. It was evidenced that molecular iodine (I2) can unexpectedly form in concentrated hot HNO3solutions, irrespective of the starting iodine compound (iodide, iodate, periodate, 3-iodo-L-tyrosine, 3,5-diiodo-L-tyrosine dehydrate). I2is produced by the nitrogen oxides existing in these conditions. The formation of volatile iodine is minimized in aqua regia, as chloride is able to keep iodine in solution due to the formation of charged chloro-iodo complexes (e.g. I2Cl?). The dilution of the concentrated acid solution, required prior to the ICP-MS analysis, causes the disruption of I2Cl?so that I2can again volatilize. To avoid this, 0.1 M thiocyanate can be added, as it forms a strong I2SCN?complex which keeps I2in solution as ion. Also other iodine species possibly occurring in the explored conditions, iodide and iodate, were demonstrated to be converted to I2SCN?in diluted HNO3solutions and in the presence of 0.1 M thiocyanate. Recovery tests demonstrated that iodine volatilization is minimized if samples containing iodine are treated in aqua regia and, after dilution, they are added with 0.1 M thiocyanate.

On-site detection of phosgene agents by surface-enhanced Raman spectroscopy coupled with a chemical transformation approach

Phosgene and its analogs are greatly harmful to the public health, environmental safety and homeland security as widely used industrial substances with extremely high toxicity. In order to rapidly evaluate the emergency risk caused by these chemicals, a new highly sensitive method based on surface-enhanced Raman spectroscopy (SERS) technique for measurement of phosgene agents was developed for the first time. Coupled with a chemical transformation approach, the highly toxic phosgene was conveniently converted to a SERS-sensitive probe, i.e. iodine (I2), with low toxicity or non-toxicity. The characteristic SERS peak in 459 cm-1 was used for quantitation and was presumed as a formation of triiodide anion (I3-), which was induced in an iodide (I-)-aggregation Au NPs system. The total measurement can be completed in ~20 min with the limits of detection of ~60 μg/l (phosgene) and ~30 μg/l (diphosgene), respectively, on a portable Raman spectrometer. This work is the first report of SERS measurement on phosgene and diphosgene in a quantitative level. This method is expected to meet the requirements of on-site detection of phosgene agents, promote emergency responses and raise more opportunities for the portable SERS applications. A sensitive surface-enhanced Raman spectroscopy method for measurement of phosgene agents with a chemical transformation approach was reported for the first time. With the transformed product iodine, a more stable triiodide anion was formed in an iodide-aggregated Au nanoparticles system appeared as a characteristic ultraviolet-visible absorption peak at 352 nm and a surface-enhanced Raman spectroscopy peak of 459 cm-1. Three phosgene agents exhibit different reaction rates.

Facile synthesis of a rare example of an iron(III) iodide complex, [FeI3(AsMe3)2], from the reaction of Me 3AsI2 with unactivated iron powder

The reaction of Me3AsI2 with unactivated iron powder provides a synthetic entry into the coordination chemistry of iron(III) iodide, which is inaccessible by traditional routes due to the low stability of the parent halide FeI3. The reaction of iron powder with Me 3AsI2 results in the formation of a trigonal bipyramidal complex, [FeI3(AsMe3)2], which features the iodide ligands in the equatorial positions, and the Me3As groups occupying the axial positions. This complex is a rare example of an iron(III) iodide complex, and is the first iron(III) complex of a monodentate tertiary arsine ligand. The preparation of [FeI3(AsMe3) 2] via the direct oxidation of iron powder further demonstrates that complexes of soft donor ligands can be prepared with hard transition metal centres, such as iron(III), in direct contravention of the HSAB principle. The structure of [FeI3(AsMe 3)2] is isomorphous with all previously reported [MX 3(EMe3)2] (M = main group or transition metal, X = halide, E = N, P, As) trigonal bipyramidal structures.

Iodine emission in the presence of humic substances at the water's surface

Humic substances that preferentially adsorb at the air/water interfaces of water or aerosols consist of both fulvic and humic acid. To investigate the chemical reactivity for the heterogeneous reaction of gaseous ozone, O 3(g), with aqueous iodide, I-(aq), in the presence of standard fulvic acid, humic acid, or alcohol, cavity ring-down spectroscopy was used to detect gaseous products, iodine, I2(g) and an iodine monoxide radical, IO(g). Fulvic acid enhanced the I2(g) production yield, but not the IO(g) yield. Humic acid, n-hexanol, n-heptanol, and n-octanol did not affect the yields of I2(g) or IO(g). We can infer that the carboxylic group contained in fulvic acid promotes the I2(g) emission by supplying the requisite interfacial protons more efficiently than water on its surface.

Weak acids enhance halogen activation on atmospheric waters surfaces

We report that rates of I2(g) emissions, measured via cavity ring-down spectroscopy, during the heterogeneous ozonation of interfacial iodide: I-(surface, s) + O3(g) + H+(s) →→ I2(g), are enhanced several-fold, whereas those of IO · (g) are unaffected, by the presence of undissociated alkanoic acids on water. The amphiphilic weak carboxylic acids appear to promote I2(g) emissions by supplying the requisite interfacial protons H+(s) more efficiently than water itself, at pH values representative of submicrometer marine aerosol particles. We infer that the organic acids coating aerosol particles ejected from oceans topmost films should enhance I2(g) production in marine boundary layers.

Bi2(IO4)(IO3)3: A new potential infrared nonlinear optical material containing [IO4]3- anion

A new potential infrared (IR) nonlinear optical (NLO) material Bi 2(IO4)(IO3)3 was synthesized by hydrothermal method. Bi2(IO4)(IO3)3 crystallizes in the chiral orthorhombic space group P212 121 (No. 19) with a = 5.6831(11) A, b = 12.394(3) A, and c = 16.849(3) A. It exhibits a threedimensional framework through a combination of the IO3, IO4, BiO8, and BiO9 polyhedra and is the first noncentrosymmetric (NCS) structure containing [IO4]3- anion. Bi2(IO 4)(IO3)3 has an IR cutoff wavelength of 12.3 ?m and belongs to the type 1 phase-matchable class with a moderately large SHG response of 5 × KDP, which is in good agreement with the theoretical calculations.

CONTINUOUS PROCESS FOR CONVERTING NATURAL GAS TO LIQUID HYDROCARBONS

A method comprising: providing a first halogen stream; providing a first alkane stream; reacting at least a portion of the first halogen stream with at least a portion of the first alkane stream in a first reaction vessel to form a first halogenated stream; providing a second alkane stream comprising C2 and higher hydrocarbons; providing a second halogen stream; and reacting at least a portion of the second halogen stream with at least a portion of the second alkane stream in a second reaction vessel to form a second halogenated stream.