Halogenation of the potassium or silver salts of bis(trifluoromethanesulfonyl)methane (CF3SO2)2CH2 and its cyclo analogues 1 with N-fluoro-bis(trifluoromethanesulfonyl)imine [(CF3SO3)2NF], chlorine or bromine gave good yields of the corresponding α-halo disulfone (CF3SO2)2CHX and cyclo ...
Preparation of chemoeffector solutions. Alkane solutions were prepared by saturating the chemotaxis buffer (410.75 mM NaCl, 9.39 mM KCl, 21.5 mM Na2HPO4, 22.41 mM KH2PO4 and 0.123 mM EDTA, pH 7.0 ) with excess crystals for several days and then passing them through polycarbonate filters (0.45...
preparation and characterization of pt-snsba-15 catalysts and their catalytic performances for long chain alkane dehydrogenation.pdf 2015-04-26上传 preparation and characterization of pt-snsba-15 catalysts and their catalytic performances for long chain alkane dehydrogenation ...
During further processing and preparation of incubations, samples were always maintained under anoxic conditions at room temperature. Sediment slurries were further distributed in 15 ml aliquots in 22-ml tubes sealed with butyl rubber stoppers, under a headspace of N2:CO2. Either fully 13C-labeled ...
+ HCl 二、烯烃与卤化氢加成(The addition reaction of HX with alkenes) CH 3 CH 2 CH 2 CH CH 2 + HBr CH 3 COOH CH 3 CH 2 CH 2 CHCH 3 Br Preparation of Monohaloalkanes 三、由醇制备(Preparing monohaloalkanesfrom alcohols) CH 3 ...
The preparation of a halogenated hydrocarbon is usually obtained by the reaction of olefins and HX. 3. Laboratory preparation of ethylene: (1) the experimental device is as follows: (2) the effect of concentrated H2SO4 catalyst and dewatering agent, the effect of zeolite or scrap porcelain is...
For example, the Zimmerer patent referred to above discloses a preparation involving reaction of a paraffin, phosphorus trichloride and oxygen followed by hydrolysis. One of the major problems associated with this preparation is production of product with a high percentage of phosphonate groups in th...
Bednarova et al.; “Effect of Support on the Size and Compositions of Highly Dispersed Pt—Sn Particles”; Journal of Catalysis; 211; pp. 335-346; (2002). Chen et al.; “Isotopic Tracer Studies of Reaction Pathways for Propane Oxidative Dehydrogenation on Molybdenum Oxide Catalysts”; J. Ph...
The reaction of an alkane in the presence of a catalyst to form unsaturated hydrocarbons is well known. If a chlorine source is present, chlorinated saturated and unsaturated hydrocarbons are also produced. Perhaps the most familiar of such processes is the preparation of vinyl chloride. ...
1. A process for the preparation of an alkanediol and a dialkyl carbonate comprising: (a) reacting an alkylene carbonate and an alkanol in the presence of a transesterification catalyst to obtain a reaction mixture comprising dialkyl carbonate, unconverted alkanol, alkanediol and unconverted alkylene...