低碳化学与化工2024，Vol.49Issue(10)：11-19,9.DOI:10.12434/j.issn.2097-2547.20240169
氧空穴ZrO2复合CuFe催化剂合成气制高级醇反应性能研究
Study on reaction performances of oxygen-vacancies ZrO2 composite CuFe catalysts for syngas to higher alcohols
摘要
Abstract
The synthesis of higher alcohols from syngas is of great practical importance,and the construction of catalysts is the key to this technology.CuFe and zirconia with rich oxygen vacancies components(ZrO2-OV)were prepared by sodium carbonate co-precipitation and oxalic acid gel precipitation,respectively.A series of composite catalysts CF-Z-n(CF,Z and n stand for CuFe,ZrO2-OV and the mass ratio of the two,respectively)were prepared by physically milling and mixing the two components.The series of catalysts can effectively improve the distribution of higher alcohols in alcohol products.The physicochemical properties of the catalysts were characterized by EPR,N2 adsorption/desorption,XRD,TEM,XPS,H2-TPR and CO-TPSR-MS,and the reaction performances of the catalysts for preparation of higher alcohols by syngas catalytic reforming was investigated.The results show that ZrO2 with rich oxygen vacancies promotes CO activation.After physically mixing ZrO2 with rich oxygen vacancies and CuFe catalyst,a high-carbon and hydrogen-poor chemical environment is formed on the catalyst surface,which facilitates the conversion of CO and generation of higher alcohols.The catalytic performance of the composite catalyst can be optimized by varying n values.Under the reaction conditions of 260 ℃,5 MPa and space velocity of 4000 h-1,the CO conversion rate of CF-Z-8 is 23.5％,the selectivity of total alcohols of CF-Z-8 is 15.0％,and the mass proportion of higher alcohols can reach 96.1％.关键词
CuFe催化剂/氧空穴/ZrO2/合成气/高级醇Key words
CuFe catalysts/oxygen vacancies/ZrO2/syngas/higher alcohols分类
化学化工引用本文复制引用
徐浩浩,穆晓亮,房克功,宋江锋..氧空穴ZrO2复合CuFe催化剂合成气制高级醇反应性能研究[J].低碳化学与化工,2024,49(10):11-19,9.基金项目
国家重点研发计划(2023YFB4103202) （2023YFB4103202）
国家自然科学基金面上项目(22179137). （22179137）
