甲醇选择氧化制甲酸甲酯双功能催化剂的研究进展

Recent advances on bifunctional catalysts for selective oxidation of methanol to methyl formate

甲醇是重要的化工基础原料,在双功能催化剂的作用下,甲醇选择氧化可以制取高附加值的甲酸甲酯下游产品。本文对近年来甲醇选择氧化制甲酸甲酯的催化剂体系、反应工艺、反应机理等方面的研究进展进行了归纳、总结和评述,特别是贵金属及其合金催化剂表面活性氧物种对甲醇的选择氧化机理、金属结构和纳米颗粒尺寸与O_(2)的吸附解离关系、金属间电子转移增强及避免甲醇深度氧化等方面的影响进行了深入的分析,并对甲醇选择氧化双功能催化剂的发展趋势进行了展望。

As an important chemical basic raw material,methanol can be converted to high value-added products,such as methyl formate,by selective oxidation using the dual-function catalysts.In this paper,the recent research progress on selective oxidation of methanol to methyl formate was summarized and reviewed,including catalyst system,reaction process and reaction mechanism.In particular,the effects of the active oxygen species on the surface of noble metal and its alloy catalysts on the selective oxidation mechanism of methanol,the relationship between metal structure and nanoparticle size and the adsorption and dissociation of O_(2),the enhancement of electron transfer between metals,and the avoidance of methanol deep oxidation were deeply analyzed.Furthermore,the development trend of dual-functional catalysts for selective oxidation of methanol was prospected.