文献类型：期刊文献

英文题名：Analysis of coke precursor on deactivated catalyst in bio-oil upgrading process

作者：Xu Qingli[1];Zhang Zhikai[1];Yan Yongjie[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Biomass Energy, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：38

期号：6

起止页码：805

外文期刊名：ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS

收录：;EI(收录号：20161602275882);WOS:【SCI-EXPANDED(收录号:WOS:000374666300007)】；

基金：This project was financially supported by the National Natural Science Foundation of China (No. 21006028) and the Jiangsu Key Laboratory for Biomass Energy and Material Opening Foundation.

语种：英文

外文关键词：Bio-oil; catalyst; CO atmosphere; coke precursor

摘要：Characterization of coke precursor on deactivated catalyst in bio-oil upgrading under CO atmosphere was analyzed with thermogravimetry, X-ray diffraction, infrared analysis, scanning electron microscopy, and nuclear magnetic resonance. The results showed that the deposition of coke precursor on a catalyst surface was mainly low-boiling point of saturated hydrocarbon compounds and the coke precursor of internal channels of deactivated catalyst were major aromatic hydrocarbon compounds. The coke precursor was in an amorphous state, which was highly dispersed on the catalyst surface or into the catalyst micropore. In addition, the catalyst deactivation mechanism was speculated that the small molecule aromatic compounds entered the internal channels of a catalyst and formed macromolecular aromatic hydrocarbons by aromatization gradually, further condensed to form coke and obstructed the channels of the catalyst.