2281-11-0Relevant articles and documents
Clunie et al.
, p. 505,506 (1967)
Hydrophilic phase transfer catalyst based on the sulfoacid group and polyoxometalate for the selective oxidation of sulfides in water with hydrogen peroxide
Zhao, Wei,Yang, Chunxia,Liu, Kecheng,Yang, Ying,Chang, Tao
supporting information, p. 447 - 451 (2017/02/05)
A hybrid catalyst, based on SO3H-fuctionalized quaternary ammonium and polyoxovanadometalate, was synthesized and used for the selective oxidation of sulfides in water at room temperature. The highest turnover numbers (TON) can reach up to 1536. The organic products with high yields can be easily separated and the catalytic system can be used several times with the retention of catalytic activity.
Sulfocompound selective catalytic oxidation reaction system in aqueous phase
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Paragraph 0017; 0018, (2018/02/04)
The invention provides a sulfocompound selective catalytic oxidation reaction system in an aqueous phase. A catalyst, a sulfocompound and 30% hydrogen peroxide are stirred for 1.5-2 hours under room temperature in the aqueous phase according to the molar ratio of the catalyst to the sulfocompound to the 30% hydrogen peroxide being 1 to 400 to 1200, wherein the conversion rate is greater than 97%, and the selectivity of the product namely sulphone is greater than 94%; the catalyst, the sulfocompound and the 30% hydrogen peroxide are stirred for 6 hours under the room temperature in the aqueous phase according to the molar ratio of the catalyst to the sulfocompound to the 30% hydrogen peroxide being 1 to 1666 to 1666, wherein the conversion rate is greater than 90%, and the selectivity of the product namely sulphoxide is greater than 80%. According to the reaction system disclosed by the invention, after the reaction is completed, extraction is performed with ethyl acetate, after an organic phase is separated, the catalyst dispersed in the aqueous phase can be directly used for the next catalytic reaction, and the catalytic activity, the conversion rate and the selectivity are all kept. The sulfocompound selective catalytic oxidation reaction system disclosed by the invention has the advantages that water is used as a solvent, the reaction condition is mild, the catalytic activity is high, the selectivity of products is good, the consumption of the catalyst is low, and the catalyst can be repeatedly used.
Synthesis, characterization and surface properties of series sulfobetaine surfactants
Qu, Guangmiao,Cheng, Jiecheng,Wei, Jijun,Yu, Tao,Ding, Wei,Luan, Huoxin
experimental part, p. 31 - 35 (2012/01/13)
A series of surface active sulfo-propane betaines and sulfo-butane betaines were synthesized with high yields by the reaction of an appropriate N,N-dimethyl alkylamine with an excess of 1,3-propane sultone and 1,4-butane sultone. The structures were characterized by 1H-NMR spectroscopy and elemental analysis. The micellar properties of these compounds were determined by surface tension methods. Surface tension measurements also provide information about the dependence of the surface tension at the CMC (γcmc), pC20 (negative logarithm of the surfactant molar concentration C20 required to reduce the surface tension by 20 mN/m), the surface excess (Γmax) at air/solution interface, the minimum area per surfactant molecule at the air solution interface (A).