MCM-48分子筛催化剂上正庚烷的临氢异构化  

Research of n-heptane hydroisomerization over MCM-48 molecular sieve catalysts

作　　者：汪颖军[1] 孙博[1] 张海菊[1] 

机构地区：[1]大庆石油学院,黑龙江大庆163318

出　　处：《化工进展》2009年第4期656-660,共5页Chemical Industry and Engineering Progress

基　　金：黑龙江省科技攻关计划项目(GZ06A-401)资助

摘　　要：制备了Ni-PMo12/MCM-48中孔分子筛催化剂并用于正庚烷异构化反应研究。采用XRD、BET吸附、红外吡啶吸附等方法对催化剂进行表征。研究了反应温度、还原温度、还原时间和还原氢气流速对异构化催化性能的影响,并考察了催化性能随时间的变化。结果表明,当镍(Ni)和磷钼酸(PMo)质量分数分别为3%和30%、Ni-PMo/MCM-48对正庚烷异构化反应具有较好的异构化性能,还原温度400℃、还原4h、氢气流速为30mL/min、反应温度300℃时,催化剂性能最好,转化率为14.2%时,异构化选择性达到65.6%。The catalytic performance of n-heptane isomerization on Ni-PMo/MCM-48 was discussed. The catalysts were characterized by using XRD, BET surface area and Py-IR. The effect of reaction temperature, reduction temperature, reduction time, and reduction hydrogen flowrate on the catalytic performance were studied. The result showed that with Ni content 3% and PMo content 30%, reduction temperature 400 ℃, reduction time 4 h, reduction hydrogen flowrate 30 mL/min, and reaction temperature 300℃, the activity of Ni-PMo12/MCM-48 was the best, the conversion of n-heptane was 14.2%, and isomerization selectivity to i-heptane could reach 65.6%.

关 键 词：磷钼酸 MCM-48 异构化 庚烷 

分 类 号：TQ241[化学工程—有机化工]