HRh(CO)(PPh3)3 encapsulated hexagonal mesoporous silica: effect of pore size on heterogeneous hydroformylation

被引：0
|
作者：
N. Sudheesh
Sumeet K. Sharma
Ram S. Shukla
机构：
[1] Council of Scientific and Industrial Research (CSIR)- Central Salt and Marine Chemicals Research Institute (CSMCRI),Inorganic Materials and Catalysis Division
[2] N.S.S. College,Department of Chemistry
[3] K.R. Puram,R&D Centre, Vadodara Manufacturing Division
[4] Affiliated to University of Kerala,undefined
[5] Reliance Industries Limited,undefined
来源：
Journal of Porous Materials | 2023年 / 30卷
关键词：
Hydroformylation; Heterogeneous catalyst; Rhodium; Hexagonal mesoporous silica; Pore size;
D O I：
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中图分类号：
学科分类号：
摘要：
HRh(CO)(PPh3)3 encapsulated catalysts were synthesized by using templates of C10 – C18 chain lengths and were studied for the effect of pore structure on hydroformylation. Three different substrates, 1-hexene, cycloheptene and styrene were investigated for their hydroformylation. The pore structure was observed to show significant effect on the conversion and selectivity. The catalysts synthesized with template of lower chain length could give lower pore diameter and pore volume, and these catalysts gave lower conversion for all the substrates assignable due to pore constraints. A decrease in aldehyde selectivity was observed at lower time at 2 h for 1-hexene from Rh-HMS-10 to Rh-HMS-18. But as the time was increased, aldehyde selectivity got increased on increasing the template chain length of the catalyst. Recycling studies showed a more precise effect of catalyst pore size. Higher pore size leads to leaching of Rh-complex from the pores. Encapsulated Rh-complex was stable in lower pore sized catalysts.
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页码：1417 / 1425
页数：8
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