文献类型：期刊文献

中文题名：铁改性Cu/Zn/MgO催化剂对合成气制低碳醇的影响

英文题名：Effect of Fe Modified Cu/Zn/MgO Catalyst on the Synthesis of Lower Alcohol from Syngas

作者：李明阳[1];李涛[1];房鼎业[1]

机构：[1]大型工业反应器工程教育部工程中心,华东理工大学,上海200237

年份：2015

卷号：32

期号：6

起止页码：646

中文期刊名：精细化工

外文期刊名：Fine Chemicals

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：合成气;铁改性;低碳醇;CO加氢;铜基催化剂;催化与分离提纯技术

外文关键词：syngas;Fe modification;lower alcohol;CO hydrogenation;Cu based catalyst;catalysis,separation and purification technology

摘要：采用共沉淀-浸渍法制备了Fe改性的Cu/Zn/Mg O催化剂,研究了其CO加氢制低碳醇的催化性能。采用低温氮气吸附-脱附、XRD、H2-TPR和CO-TPD表征了Fe的添加对催化剂的影响。结果表明,Fe的加入形成了Mg Fe2O4相,有助于Fe、Mg物种的分散。适量Fe增强了催化剂表面对CO吸附强度,有利于C2+醇的合成。当Fe加入量n(Fe)/n(Cu)=0.15时,总醇中C2+醇质量分数w(C2+醇)由未加Fe时的19.6%增加到59.7%,C2+醇时空收率由23.3 g/(kgcat·h)增加到45.3 g/(kgcat·h)。
Fe modified Cu/Zn/Mg O catalyst prepared by co-precipitation-impregnation method is studied for the synthesis of lower alcohol from syngas,and characterized by means of BET,H2-TPR,CO-TPD and XRD for assessment of the impact of Fe on the catalyst's structure and morphology.Evaluation results show that Mg Fe2O4 phase is formed,which promotes the dispersion of both the Fe and Mg species when Fe is added.Optimal Fe amount promotes adsorption intensity of CO and facilitates the synthesis of C2+alcohols.When the addition amount of Fe is n(Fe)/n(Cu)=0.15,the mass ratio of C2+alcohols in the total alcohol and the space time yield of C2+alcohols increased from 19.6%to59.7%and 23.3 g/(kgcat·h)to 45.3 g/(kgcat·h)respectively,compared with the catalyst without Fe.