文献类型：期刊文献

中文题名：Zr助剂对铁基催化剂F-T合成性能的影响

英文题名：Effect of Zr promoter on iron-based catalyst for Fischer-Tropsch synthesis

作者：张皓荐[1];马宏方[1];张海涛[1];应卫勇[1];房鼎业[1]

机构：[1]华东理工大学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：2012

卷号：37

期号：2

起止页码：12

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2011】；CSCD:【CSCD_E2011_2012】；

基金：国家高技术研究发展计划(863计划)项目(2011AA05A204);国家重点实验室课题(SKL-ChE-09T01)

语种：中文

中文关键词：费托合成;铁基催化剂;Zr助剂

外文关键词：Fischer-Tropsch synthesis； iron based catalyst； Zr promoter

摘要：采用N2物理吸附、程序升温还原、X射线衍射和穆斯堡尔谱等分析方法研究了助剂Zr含量对铁基费托合成催化剂结构、还原碳化行为及物相的影响,在n(H2)/n(CO)=0.67,270℃,1.5MPa和1.0L.g-1.h-1条件下,在固定床反应器中考察Zr含量对铁基催化剂费托合成性能的影响。结果表明,添加少量Zr能提高催化剂的比表面积,促进催化剂的还原和碳化,提高催化剂的反应活性,增加Zr浸渍量则降低了催化剂比表面积,抑制催化剂的还原和碳化,降低催化剂的活性同时加速催化剂的失活。当n(Zr):n(Fe)=0.01时,催化剂Zr-1具有高的CO转化率和高的C5+选择性。
The effects of promoter Zr content on the structure,reduction behavior and phase transformation of the iron-based catalysts for Fischer-Tropsch synthesis（FTS） were investigated using N2 adsorption,temperature-programmed reduction,X-ray photoelectron spectroscopy and M ssbauer effect spectroscopy.The FTS performances of the iron-based catalysts were studied in a fixed-bed reactor under the conditions of H2/CO molar ratio of 0.67,270℃,1.5MPa and space velocity of 1.0 L·g-1·h-1.The results showed that small amount of Zr increased the BET surface area,promoted the reduction/carburization and improved the activity of the catalyst.While large amounts of Zr addition decreased the surface area,suppressed the reduction/carburization of the catalyst,decreased the activity and speeded up the catalyst deactivation.The optimal catalyst with Zr/Fe molar ratio of 0.01 had high CO conversion and high selectivity to C5＋ hydrocarbons.