文献类型：期刊文献

中文题名：不同Mn含量Cu-Fe基催化剂合成低碳醇的原位红外光谱及反应性能研究

英文题名：In situ DRFTIR and reaction performance investigation of Cu-Fe based catalysts with different content of Mn for higher alcohols synthesis

作者：王昊[1];钱炜鑫[1];马宏方[1];张海涛[1];应卫勇[1]

机构：[1]华东理工大学化工学院大型工业反应器工程教育部工程中心,化学工程联合国家重点实验室,上海200237

年份：2018

卷号：43

期号：6

起止页码：34

中文期刊名：天然气化工—C1化学与化工

外文期刊名：Natural Gas Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2017_2018】；

基金：国家863计划(2011AA05A204).

语种：中文

中文关键词：低碳醇;Cu-Fe基催化剂;锰助剂;原位漫反射红外

外文关键词：higher alcohols;Cu-Fe based catalyst;manganese promoter;DRFTIR

摘要：采用共沉淀法制备了不同Mn含量的Cu-Fe基催化剂,运用原位漫反射红外(DRFTIR)对催化剂进行表征,在管式反应器中评价了Cu-Fe基催化剂在CO加氢合成低碳醇反应中的性能。结果表明:Mn的添加可以提高催化剂对CO的吸附能力,但过量的Mn会抑制CO的吸附过程。在催化剂表面检测到了甲氧基、甲酸基团、乙酸基团和酰基基团等中间产物,Mn的添加可以促进酰基基团的生成。加入Mn可以提高催化剂的反应活性,同时还可以提高产物中C_2^+醇的分布。
The Cu-Fe catalysts with different content of Mn were prepared by the co-precipitation method and characterized by in situ diffuse reflectance FTIR(DRFTIR).The catalytic performances of the catalysts in synthesis of higher alcohols from syngas were evaluated in a tubular reactor.The results showed that the CO adsorption would be enhanced by adding Mn,while excessive Mn would decreased the amount of the adsorbed CO.Intemediates such as methoxy species,formate,acetate and formyl were found on catalyst surface during the reaction.The added Mn could promote the formation of formyl.The addition of Mn would increase the reactivity of the catalyst and the distribution of the C2^+alcohols in the product.