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Title: Mesoporous silica containing sulfonic acid groups as catalysts for alpha-pinene methoxylation
Authors: Castanheiro, J
Guerreiro, L
Fonseca, I
Ramos, A
Vital, J
Editors: Gédéon, A
Massiani, P
Babonneau, F
Keywords: Pinene
mesoporous silica
sulfonic groups
Issue Date: 2-Sep-2008
Publisher: Elsevier
Citation: Studies in Surface Science and Catalysis, 174 (2008) 1319-1322.
Abstract: The methoxylation of a-pinene was studied over sulfonic acid-functionalized mesoporous silica (MCM-41, PMO) at 60ºC. The support functionalization was achieved by the introduction of 3-(mercaptopropyl)trimethoxysilane onto the surface of these materials either by grafting or by co-condensation. The thiol groups were oxidized to SO3H by treatment with H2O2. All the catalysts were active in the studied reaction being the PMO-SO3H-g the best one. Good values of selectivity to a-terpinyl methyl ether were obtained with these catalysts. Catalytic stability of the PMO-SO3H-g was evaluated by performing consecutive batch runs with the same catalyst sample. After the third batch it was observed a stabilisation of the activity.
Type: article
Appears in Collections:QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
CQE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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