燃料化学学报2017，Vol.45Issue(5)：547-555,9.
助剂和原料气中CO2浓度对CuFeZr催化剂用于合成气制混合醇的影响
Effect of promoter and CO2 content in the feed on the performance of CuFeZr catalyst in the synthesis of higher alcohol from syngas
摘要
Abstract
The effect of various promoting additives (Mn,Zn,Co) on the performance of CuFeZr catalyst in the synthesis of higher alcohol from syngas was investigated.The results of nitrogen physisorption,XRD and H2-TPR characterization show that these additives can reduce the particle size and enhance the surface basicity and the adsorption capacity towards CO.Especially,the doping of Zn in the CuFeZr catalyst can effectively enhance the interaction between Cu and Fe,strengthen the surface basicity,and improve the reducibility and CO adsorption ability.For the synthesis of higher alcohol from syngas over the CuFeZr catalyst,the catalytic evaluation results in a fixed bed reactor illustrate that the activity and selectivity to alcohols are greatly enhanced by the addition of Zn promoter;the space time yield (STY) of ROH is increased from 0.026 to 0.071g/(gcat·h).Meanwhile,it was found that CO2 in the feed can improve the CO conversion as well as the STY to alcohols and hydrocarbons,but suppress the chain growth and decrease the ratio of olefin to paraffin;proper amount of CO2 (2.5%) is beneficial to the formation of alcohols and hydrocarbons of short chains.关键词
混合醇合成/CuFeZr催化剂/合成气/助剂/CO2Key words
higher alcohols synthesis/CuFeZr catalyst/syngas/promoting additives/CO2分类
化学化工引用本文复制引用
廖珮懿,张辰,张丽君,杨彦彰,钟良枢,王慧,孙予罕..助剂和原料气中CO2浓度对CuFeZr催化剂用于合成气制混合醇的影响[J].燃料化学学报,2017,45(5):547-555,9.基金项目
The project was supported by the National Science Foundation for Young Scientists of China (21403278).国家青年科学基金(21403278)资助 （21403278）
