MoS_2基催化剂上生物质基合成气制乙醇

生物质作为重要的可再生绿色能源,由于资源丰富,分布广泛,S、N含量低,CO_2零排放等优点,必将为实现可持续发展起到举足轻重的作用。乙醇作为一种最具潜能的汽油添加剂及化石燃料替代品,具有辛烷值高,无污染等优点。因此,催化生物质基合成气制乙醇作为可再生能源开发的途径之一,极具研究价值及工业价值。综述MoS_2基催化剂上生物质基合成气制乙醇的重要研究进展,指出利用合成气催化制乙醇的效率还有待进一步提高,尚未达到实际应用要求。改性MoS_2基催化剂对乙醇选择性较高,但烃类及CO_2副产物较多。为了促进乙醇的生成,今后合成气催化制乙醇应深入系统的研究碱金属和过渡金属共同促进的MoS_2基催化剂,并借助科学技术发展运用新方法和新思路,制备高效、稳定的催化剂。

Biomass-derived syngas to ethanol over MoS2-based catalysts

As clean and renewable non-fossil energy sources,biomass will play an important role in the sustainable development of energy because of widely distributed huge reserves,low contents of nitrogen and sulfur,and CO₂ neutrality.As the most potential gasoline additive and alternative fuel for the replacement of fossil fuels,ethanol has the advantages of high octane number and no environmental pollution.Thus,heterogeneous catalytic synthesis of ethanol from biomass-derived syngas is a promising way for the development of renewable energy sources and of great research and commercial values.This paper briefly reviews the progresses and advances in the field of catalytic conversion of syngas to ethanol and points out that the efficiency of the catalytic conversion of syngas to ethanol is far from industrial application and needs to be further improved.Modified MoS₂-based catalyst could enhance selectivity of ethanol,but also promote formation of hydrocarbons and CO₂.In order to facilitate the production of ethanol,stable and efficient MoS₂ based catalyst promoted by alkalis and transition metal should be studied systematically via new techniques and methods.