Showing papers on "Ammonium tetrathiomolybdate published in 2014"
TL;DR: In this paper, the catalytic performance of these catalysts in the hydrogenation of CO for the synthesis of higher alcohols along with catalyst characterization results were reported. But, the performance of the catalysts was not evaluated.
20 citations
Patent•
10 Sep 2014
TL;DR: In this article, a controllable synthesis and synchronous surface modifying method of an MoS2 nanosheet was proposed, which comprises the steps that ammonium tetrathiomolybdate serves as an Mo source and an S source, or the ammonium molyb date serves as the Mo source, and the thiourea serves as S source.
Abstract: The invention relates to a controllable synthesis and synchronous surface modifying method of an MoS2 nanosheet. The method comprises the steps that ammonium tetrathiomolybdate serves as an Mo source and an S source, or the ammonium molybdate serves as the Mo source, the thiourea serves as the S source, the ammonium tetrathiomolybdate or the ammonium molybdate and the thiourea are dissolved in water or the mixed solvent of water and polyethylene glycol, thermal treatment is carried out for 12-18 hours under the temperature ranging from 200 DEG C to 220 DEG C, separating and washing are carried out to obtain the MoS2 nanosheet, and the type and concentration of the Mo source and the S source and/or the adopted solvent are/or controlled so that the size of the MoS2 nanosheet can be controlled.
13 citations
Patent•
05 Feb 2014
TL;DR: In this article, a composite nanotube composed of a molybdenum disulfide-carbon-carbon nanotubes and a preparation method thereof is presented, which comprises the following steps: firstly, orderly dissolving ammonium tetrathiomolybdate and a carbon high-molecular polymer with surface activity into water; then adding a multiwalled carbon nanotubes; centrifuging, drying and burning after carrying out ultrasonic dispersing, so as to prepare MoS2-C/CNTs.
Abstract: The invention discloses a composite nanotube composed of a molybdenum disulfide-carbon-carbon nanotube and a preparation method thereof. The method comprises the following steps: firstly, orderly dissolving ammonium tetrathiomolybdate and a carbon high-molecular polymer with surface activity into water; then adding a multiwalled carbon nanotube; centrifuging, drying and burning after carrying out ultrasonic dispersing, so as to prepare MoS2-C/CNTs. By using the surface activity of a carbon high-molecular polymer, the molybdenum disulfide is more evenly dispersed on the surface of the carbon nanotube; on the other hand, the conductivity of a compound is improved through the compound of amorphous carbon and molybdenum disulfide left on the surface of the carbon nanotube when a mixture is burnt at high temperature.
11 citations
TL;DR: DecDecarboxylative thioesterification of isatoic anhydrides mediated by benzyl(triethyl)ammonium tetrathiomolybdate gave the corresponding S-alkyl or S-aryl 2-aminobenzenecarbothioate derivatives at 60 degrees C as discussed by the authors.
Abstract: Decarboxylative thioesterification of isatoic anhydrides mediated by benzyl(triethyl)ammonium tetrathiomolybdate gave the corresponding S-alkyl or S-aryl 2-aminobenzenecarbothioate derivatives at 60 degrees C. At ambient temperature, organic disulfides were reductive cleaved in the presence of tetrathiomolybdate to generate thiolate anions in situ; this was followed by attack on isatoic anhydrides to give the corresponding S-alkyl or S-aryl 2-aminobenzenecarbothioate derivatives. Additionally, it was shown that multistep reactions could be performed with tetrathiomolybdate, starting with an alkyl halide as a precursor of an alkyl disulfide, which, in turn, was used for ring opening of isatoic anhydrides.
3 citations
Abstract: Kinetic and mechanistic aspects of the conversion of halides to disulphides using benzyl triethyl ammonium tetrathiomolybdate as sulphur-transfer reagent were investigated. The reaction follows a 1:1 stoichiometry with overall second-order kinetics and involves the formation of monosulphides in addition to disulphides. In the light of our observations, we propose a nucleophilic substitution: carbon–metal–carbon (SN-CMC) reaction mechanism. The proposed mechanism, besides accounting for all of our experimental observations, also explains many aspects of such reactions that have been reported earlier by various groups.