Ni-SiW12／MCM-41催化剂的制备与催化性能研究  

Investigation on preparation and catalytic effect of the Ni-SiW_(12)/MCM-41 catalyst

作　　者：汪颖军[1] 李长海[1] 谷春旭 孙丽丽[1] 张海菊[1] 

机构地区：[1]大庆石油学院化学化工学院,黑龙江大庆163318 [2]中国蓝星大庆工业园,黑龙江大庆163713

出　　处：《化学研究与应用》2008年第4期452-456,共5页Chemical Research and Application

基　　金：黑龙江省自然科学基金(ZTB2005-37)资助项目;黑龙江省教育厅研究基金资助(10541012)

摘　　要：Mesoporous molecular sieves MCM-41 was prepared using water-heat synthesis,and the catalyst was loaded with Ni and SiW12 by impregnation.The samples were characterized using XRD and BET surface area and Py-IR.Isomerization of n-heptane over Ni-SiW/MCM-41catalyst was investigated in a continuous flow fixed-bed reactor under atmospheric pressure.The result showed that when Ni content is at 4% and SiW12 content is at 30%,the activity of Ni-SiW12/MCM-41 is best.Isomerization selectivity to iheptane can reach 74% at a higher conversion of n-heptane.Mesoporous molecular sieves MCM-41 was prepared using water-heat synthesis, and the catalyst was loaded with Ni and SiW12 by impregnation. The samples were characterized using XRD and BET surface area and Py-IR. Isomerization of n-heptane over Ni-SiW/MCM-41catalyst was investigated in a continuous flow fixed-bed reactor under atmospheric pressure. The result showed that when Ni content is at 4% and SiW12 content is at 30%, the activity of Ni-SiW12/MCM-41 is best. Isomerization selectivity to i-heptane can reach 74% at a higher conversion of n-heptane.

关 键 词：中孔分子筛 杂多酸 镍 异构化 正庚烷 

分 类 号：O643.36[理学—物理化学]