HYDROTALCITE-IMPREGNATED COPPER AND CHROMIUM-DOPED COPPER AS NOVEL AND EFFICIENT CATALYSTS FOR VAPOR-PHASE HYDROGENATION OF FURFURAL: EFFECT OF CLAY PRETREATMENT

Abstract A series of novel catalysts based on immobilization of copper and chromium-doped copper on calcined and uncalcined hydrotalcite support have been developed and used for promoting vapor-phase hydrogenation of furfural. The results indicated that a pre-calcination of the support has a negative role in changing the structural features and catalytic activity of the final catalysts. Moreover, the presence of the Cr promoter can improve the catalyst performance. The best performance (furfuryl alcohol selectivity of 94% and furfural conversion of 89%) was obtained over the Cr-doped copper catalyst supported on as-synthesized hydrotalcite material.

摘要：本研究开发了一系列以焙烧及未焙烧水滑石（hydrotalcite）为载体，负载铜与铬掺杂铜的新型催化剂，并将其应用于糠醛（furfural）的气相加氢反应。结果表明，对载体进行预焙烧会对最终催化剂的结构特性与催化活性产生负面影响。此外，铬助剂的引入可显著提升催化剂性能。在以未焙烧的合成水滑石为载体的铬掺杂铜催化剂上，可实现最优催化表现：糠醇（furfuryl alcohol）选择性为94%，糠醛转化率为89%。