文献类型：期刊文献

中文题名：Co改性Mn/Cu/MgO催化剂对合成气制混合醇的影响

英文题名：Influence of Co Modified Mn/Cu/MgO Catalyst on the Synthesis of Mixed Alcohols from Syngas

作者：王兰磊[1];李建文[1];车轶菲[1];张海涛[1];应卫勇[1];李涛[1]

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

年份：2016

卷号：32

期号：6

起止页码：504

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

语种：中文

中文关键词：合成气;钴改性;混合醇;一氧化碳加氢;钴铜基催化剂

外文关键词：syngas; Co modification; mixed alcohols; carbon monoxide hydrogenation; Co-Cu based catalyst

摘要：采用共沉淀法制备了Co改性的Mn/Cu/Mg氧化物催化剂,通过低温N2吸附-脱附、X射线衍射(XRD)、CO程序升温脱附(CO-TPD)、程序升温还原(H_2-TPR)和X射线光电子能谱分析(XPS)等手段对催化剂进行表征,并研究了其CO加氢制混合醇的催化性能。结果表明:Co的加入促进了Co_2Mg和MnCo_2O_4相的形成,有利于Cu,Mn及Mg物种的分散;当Co和Cu的物质的量之比增加至0.3时,总醇中C_(2+)OH与C_1OH选择性之比由0.31增至3.12,C_(2+)OH时空收率由9.07 g/(kg·h)增至28.83 g/(kg·h);适量Co助剂的添加可有效提高催化剂的插碳能力,从而提高了C_(2+)OH在总醇中的选择性,催化剂稳定性能良好。
Co modified Mn/Cu/MgO catalysts were prepared by co-precipitation method and were characterizedby means of low-temperature nitrogen adsorption-desorption technique,X-ray diffraction(XRD),COtemperature-programmed desorption(CO-TPD),H2temperature-programmed reduce(H2-TPR),and X-rayphotoelectron spectroscopy(XPS).The catalyst performance on the synthesis of mixed alcohols from syngaswere investigated.The results indicated that Co2Mg and MnCo2O4phase was formed,which facilitated thedispersion of the Cu,Mn and Mg species after adding the element of Co to Mn/Cu/MgO catalyst.Comparedwith the catalyst without Co,when the molar ratio of Co to Cu was0.3,the selectivity ratio of C2+OH toC1OH and the space time yield of C2+OH increased from0.31to3.12and9.07g/(kg·h)to28.83g/(kg·h),respectively.The addition of promoter Co remarkably promoted the carbon insertion ability,which improvedthe selectivity of C2+OH in this reaction,and the catalyst showed high stability.