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工程科学与技术:2007,39(5):70-74
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异丁烯氢甲酰化用介孔MCM-41分子筛负载铑磷络合物催化剂的研究
(四川大学 化工学院,四川 成都 610065)
Study on Preparation of Mesoporous MCM-41 Zeolite Supported HRh(CO)(PPh3)3 Complex for Isobutene Hydroformylation
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投稿时间:2006-12-20    
中文摘要: 采用水热合成法制备Si-MCM-41介孔分子筛,并在其上担载HRh(CO)(PPh3)3络合物合成负载型催化剂,考察了该载体Si-MCM-41分子筛的制备条件对异丁烯氢甲酰化反应的影响。实验结果表明分子筛的制备条件中pH值,原料配比,晶化温度对反应性能的影响最显著,在pH=10,n(Si)∶n(CTAB)=1∶0.2和晶化温度为120 ℃的条件下制备的Si-MCM-41载体对异丁烯氢甲酰化制异戊醛的选择性达最优。采用低温液氮吸附脱附分析(BET)和X射线衍射分析 (XRD)技术对载体Si-MCM-41和负载型HRh(CO)(PPh3)3-MCM-41催化剂进行表征,结果表明载体在负载络合物后仍然保持了较好的介孔特征,其较均匀的孔径分布表现出对反应产物较好的择形催化性能。
Abstract:The mesoporous molecular sieves Si-MCM-41 was synthesized by hydrothermal method, and the catalysts supported the HRh(CO)(PPh3)3 on the Si-MCM-41 material were prepared. The proper parameters of the Si-MCM-41carrier synthesis were investigated. The isobutene Hydroformylation was studied as a model reaction. The results indicated that the optimum process of Si-MCM-41carrier were selected: n (Si)∶ n (CTAB) =1∶0.2, pH=10, crystallizing temperature=120 ℃, the selectivity of isovaleraldehyde was the best. The good mesopore-structure order of Si-MCM-41 and HRh(CO)(PPh3)3-MCM-41 were proved by BET data and XRD spectra. The uniform pore diameter distribution was beneficial for the selectivity of isovaleraldehyde for isobutene Hydroformylation reaction.
文章编号:20070514     中图分类号:    文献标志码:
基金项目:四川大学科技创新基金资助项目(2005CF07);国家自然科学基金资助项目(205903603)
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许俊强,储伟,罗仕忠.异丁烯氢甲酰化用介孔MCM-41分子筛负载铑磷络合物催化剂的研究[J].工程科学与技术,2007,39(5):70-74.
.Study on Preparation of Mesoporous MCM-41 Zeolite Supported HRh(CO)(PPh3)3 Complex for Isobutene Hydroformylation[J].Advanced Engineering Sciences,2007,39(5):70-74.