Characterizing Cation Chemistry for Anion Exchange Membranes—A Product Study of Benzylimidazolium Salt Decompositions in Base
作者:Mark J. Pellerite、Marina M. Kaplun、Robert J. Webb
DOI:10.1021/acs.joc.9b02493
日期:2019.12.6
Imidazolium functionality has played a prominent role in research on anion exchange membranes for use in alkaline electrochemical devices. Base stability and degradation of these materials has been much studied, but in many instances, product pathways have not been thoroughly delineated. We report an NMR study of base-induced decomposition products from three benzylimidazolium salts bearing varying
Photo-production of lactate from glyoxylate: how minerals can facilitate energy storage in a prebiotic world
作者:Marcelo I. Guzman、Scot T. Martin
DOI:10.1039/b924179e
日期:——
The reaction of glyoxylate with carbon dioxide to produce lactate is promoted when zinc sulfide is irradiated by ultravioletlight. These results, representing a model for the action of colloidal mineral semiconductors on early Earth, complete a consecutive series that culminates in entry-point molecules of the reductive tricarboxylic acid cycle.
Room temperature, near-quantitative conversion of glucose into formic acid
作者:Can Wang、Xi Chen、Man Qi、Jianeng Wu、Gökalp Gözaydın、Ning Yan、Heng Zhong、Fangming Jin
DOI:10.1039/c9gc02201e
日期:——
selectively transform glucose into formic acid at roomtemperature. After parameter optimization, formic acid was obtained in an unprecedented 91.3% yield with a reaction time of 8 h in lithium hydroxide aqueous solution with hydrogen peroxide as the oxidant. The synergistic effects of the base and the oxidant promoted the glucose conversion at roomtemperature and enhanced the selectivity towards FA
An electrolyzer assembled with a Rh/C nanostructured anode electrode, promotes the partial oxidation of alcohols and high-purity hydrogen evolution in alkaline media at low energy input.
The alkaline anthraquinone-2-sulfonate-H2O2-catalyzed oxidative degradation of lactose: An improved Spengler-Pfannenstiel oxidation
作者:Henricus E.J. Hendriks、Ben F.M. Kuster、Guy B. Marin
DOI:10.1016/s0008-6215(00)90531-7
日期:1991.8
followed first-order behavior with respect to lactose, D-glucose, or D-galactose. The simultaneous addition of catalytic, equimolar amounts of sodium 2-anthraquinonemonosulfonate and H2O2 showed a pronounced effect on the selectivity. A reaction mechanism for this type of alkali-catalyzed oxidative degradation of carbohydrates is presented and discussed. Lactose could be oxidized up to almost complete conversion