NDLI: Sulfonic acid-functionalized periodic mesoporous organosilicas in esterification and selective acylation reactions

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Catalysis Science & Technology Vol - 5 Issue - 6

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Sulfonic acid-functionalized periodic mesoporous organosilicas in esterification and selective acylation reactions

Content Provider	Royal Society of Chemistry (RSC)
Author	Mobaraki, Akbar Vali, Hojatollah Karimi, Babak Mirzaei, Hamid M.
Copyright Year	2015
Abstract	The application of sulfonic acid-functionalized periodic mesoporous organosilicas (PMOs) having either phenyl (1a) or ethyl (1b) bridging groups was investigated in the esterification of a variety of alcohols and fatty acids. It was found that 1b consistently exhibited higher catalytic performance than 1a in the described reaction. In particular, it was proposed that the superior catalytic activity of 1b in esterification of fatty acids with methanol is a result of adequate hydrophobic–hydrophilic surface balance in the ethyl PMO catalyst. In addition, the study of chemoselective acylation of 1,3-butanediol with dodecanoic acid with varied mesoporous silica-supported solid sulfonic acids including both 1a and 1b implies that there is a compromise between the reaction selectivity and the surface physicochemical properties of the employed catalyst. Our results clearly show that the catalyst having high surface hydrophilic nature gives high selectivity toward the formation of mono-acylated products whereas those with relatively high hydrophobic characteristics showed enhanced selectivity toward the formation of di-acylated products.
Starting Page	3624
Ending Page	3631
Page Count	8
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	5
Issue Number	7
Journal	Catalysis Science & Technology
DOI	10.1039/c5cy00267b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	1,3-Butanediol Mesoporous material Ester Carboxylic acid Phenyl group Hydrophile Hydrophobe Methanol Acylation
Content Type	Text
Resource Type	Article
Subject	Catalysis

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