Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0926-860X(01)00574-9
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dc.titleRoom temperature synthesis of diphenylmethane over MCM-41 supported AlCl3 and other Lewis acids
dc.contributor.authorHu, X.
dc.contributor.authorChuah, G.K.
dc.contributor.authorJaenicke, S.
dc.date.accessioned2014-10-16T08:39:28Z
dc.date.available2014-10-16T08:39:28Z
dc.date.issued2001-09-03
dc.identifier.citationHu, X., Chuah, G.K., Jaenicke, S. (2001-09-03). Room temperature synthesis of diphenylmethane over MCM-41 supported AlCl3 and other Lewis acids. Applied Catalysis A: General 217 (1-2) : 1-9. ScholarBank@NUS Repository. https://doi.org/10.1016/S0926-860X(01)00574-9
dc.identifier.issn0926860X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/94733
dc.description.abstractThe catalytic properties of MCM-41 activated with AlCl3, ZnCl2 and other Lewis acids, such as FeCl3, NiCl2 and CuCl2 were investigated for room temperature Friedel-Crafts benzylation in the liquid phase. The catalysts were studied under batch-wise as well as continuous operation conditions. AlCl3/MCM-41 showed higher activity than ZnCl2/MCM-41, while FeCl3/MCM-41, CuCl2/MCM-41 and NiCl2/MCM-41 were inactive under identical conditions. ZnCl2 offered some advantages due to reduced hydrolytic sensitivity and better selectivity. The optimized ZnCl2 loading of ZnCl2/MCM-41 was 4 mmol g-1. For AlCl3/MCM-41, the pore size of MCM-41 did not affect the activity nor the selectivity in the benzylation of benzene. Very low selectivity was observed in the benzylation of substituted aromatics using AlCl3/MCM-41 as catalyst due to a tendency for migration or transfer of the substituent group. With its inherently lower activity, ZnCl2/MCM-41 did not catalyze this reaction. In a continuous trickle bed reactor, sustained activity of the AlCl3/MCM-41 catalyst could be demonstrated. Hence, MCM-41 supported with AlCl3 or ZnCl2 may be promising candidates to replace AlCl3 in the industrial manufacture of diphenylmethanes. © 2001 Elsevier Science B.V.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0926-860X(01)00574-9
dc.sourceScopus
dc.subjectAlCl3
dc.subjectBenzylation
dc.subjectDiphenylmethane
dc.subjectLewis acids
dc.subjectMCM-41
dc.subjectZnCl2
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1016/S0926-860X(01)00574-9
dc.description.sourcetitleApplied Catalysis A: General
dc.description.volume217
dc.description.issue1-2
dc.description.page1-9
dc.description.codenACAGE
dc.identifier.isiut000170756000001
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