负载杂多酸MCM-41分子筛的制备与性能  

Preparation and property of heteropolyacid supported MCM-41 sieves

作　　者：李长海[1] 谷春旭 王国强[3] 汪颖军[1] 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 [3]大庆油田精细化工厂,黑龙江大庆163411

出　　处：《石化技术与应用》2007年第6期487-490,497,共5页Petrochemical Technology & Application

摘　　要：当十六烷基三甲基溴化铵、原硅酸四乙酯、NaOH、H2O以摩尔比为0.12∶1.00∶0.24∶60.00混合后,加入硝酸镍、杂多酸硅钨酸(SiW12),采用等体积浸渍法,可制备Ni-SiW12/MCM-41催化剂。在连续固定床反应器上,考察了催化剂在正庚烷异构化反应中的催化性能。结果表明,在Ni物种质量分数为4%,SiW12质量分数为30%,还原温度为400℃,反应温度为300℃的条件下,Ni-SiW12/MCM-41催化活性为18.8%,异构化选择性为74.4%。Catalyst Ni - SiW,JMCM - 41 was prepared by using equal volume impregnation method under the conditions of mole ratio of cetyl trimethyl ammonium bromide/tetraethyl orthosilicate/sodium hydroxide/water 0. 12/1.00/0.24/60.00 and then mixing with nickel nitrate and heteropolyacid SiW,2. After that, the property of catalyst for n - heptane isomerization was inverstigated in a fixed -bed reactor. The results showed that the activity of Ni -SiW12/MCM -41 -was 18.8% , and the isomer- ization selectivity was 74.4% at the mass fraction of Ni and SiW12 4% , 30% respectively and the reduction temperature 400 ℃, the reaction temperature 300℃.

关 键 词：中孔分子筛 催化剂 负载 异构化 杂多酸 

分 类 号：TE624.93[石油与天然气工程—油气加工工程]