EVOLUTION OF IRON PHASES IN Cu-Fe BASED CATALYST DURING CO HYDROGENATION FOR HIGHER ALCOHOLS SYNTHESIS

摘要

IntroductionHigher alcohols synthesis has been attractive issue in Cl chemistry field due to its potential application as an alternative clear energy and raw material for chemical engineering in the past 30 years. Generally, the catalysts for higher alcohols synthesis via CO hydrogenation can be classified as two broad categories: modified methanol synthesis catalysts and modified Fischer-Tropsch (F-T) synthesis catalysts. The latter has attracted more attention resulted from its favorable selectivity to C2+OH and relatively mild operational condition [1]. Nevertheless, no substantial improvements in the overall performance had been noticed, and both selectivity towards total alcohols or C2+OH and productivity have been still the major obstacle for further R & D. Recently, an efficient Cu-based catalyst modified by F-T synthesis elements had been developed in this group [2]. Especially, Cu-Fe based catalyst displayed excellent catalytic performance even at mild operational conditions [3].