【Applied Catalysis A: General】Converting formaldehyde-methylethylketone adduct to a nonlinear C5 1,3-diol over Pt-ceria catalysts for isoprene production
作者：YanlongQi, ShijunLiu, LongCui, QuanquanDai, ChenxiBai
關鍵字：1
論文來源：期刊
發(fā)表時間：2020年
Isoprene has outmost importance in the manufacture of elastomer. Herein, an alternative approach for isoprene production from readily available chemicals is reported: condensation of methyl ethyl ketone and formaldehyde, followed by the hydrogenation and dehydration reaction. The focus was paid on the hydrogenation reaction over Pt-ceria catalysts giving 2-methyl-1,3-butanediol, where the influence of Ce species on the catalyst structure was studied, and the structure-activity relationship was established. It deduced that the presence of CeO2 appeared to be essential for the catalyst structure (e.g., dispersion, morphology) and the enhanced catalytic performance (e.g., activating H2, facilitating the reaction), these benefited from the presence of the oxygen vacancies on CeO2 surface. In addition, a relatively weak Pt-support interaction gave larger Pt particles which resulted in a higher yield. Finally, the application of the as-synthesized 2-methyl-1,3-butanediol in isoprene production was performed in the presence of the heteropolyacid catalysts, affording isoprene in ～80% yield.