首页 > 新闻公告 > CEM研究国际动态 CEM研究国际动态
Direct conversion of CO2 into liquid fuels with high selectivity over a bifunctional catalyst

Although considerable progress has been made in carbon dioxide (CO2) hydrogenation to various C1 chemicals, it is still a great challenge to synthesize value-added products with two or more carbons, such as gasoline, directly from CO2 because of the extreme inertness of CO2 and a high C–C coupling barrier. Here we present a bifunctional catalyst composed of reducible indium oxides (In2O3) and zeolites that yields a high selectivity to gasoline-range hydrocarbons (78.6%) with a very low methane selectivity (1%). The oxygen vacancies on the In2O3 surfaces activate CO2 and hydrogen to form methanol, and C−C coupling subsequently occurs inside zeolite pores to produce gasoline-range hydrocarbons with a high octane number. The proximity of these two components plays a crucial role in suppressing the undesired reverse water gas shift reaction and giving a high selectivity for gasoline-range hydrocarbons. Moreover, the pellet catalyst exhibits a much better performance during an industry-relevant test, which suggests promising prospects for industrial applications.

Nature Chemistry (2017) doi:10.1038/nchem.2794
Received 23 January 2017 Accepted 05 May 2017 Published online 12 June 2017

http://www.nature.com/nchem/journal/vaop/ncurrent/full/nchem.2794.html

发布日期:2017/06/13 发布者: 点击数: