Title: Shape-selective synthesis of methylamines over the RRO zeolite Al-RUB-41
Authors: Tijsebaert, Bart ×
Yilmaz, Bilge
Mueller, Ulrich
Gies, Hermann
Zhang, Weiping
Bao, Xinhe
Xiao, Feng-Shou
Tatsumi, Takashi
De Vos, Dirk #
Issue Date: Mar-2011
Publisher: Academic Press
Series Title: Journal of Catalysis vol:278 issue:2 pages:246-252
Abstract: Aluminum was incorporated into the layered silicate RUB-39, which is transformed by calcination into RUB-41. This new zeolite with RRO topology contains 8- and 10-ring pores, and the acid sites in the aluminated material catalyze the synthesis of methylamines, in particular mono- and dimethylamine, by amination of methanol. Owing to the shape-selective catalytic properties of (H)Al-RUB-41, low selectivity to the thermodynamically favored trimethylamine product is obtained in comparison with results on RUB-39 or non-shape-selective materials. Both activity and selectivity are highest for RUB-41 catalysts with a high Si to Al ratio. Silylation reduces the number of unselective sites and results in a further suppression of trimethylamine formation. The introduction of acidity in the intact RUB-41 structure is supported by Al-MAS NMR and NH3-TPD data. Additional characterization by XRD and SEM is provided. (C) 2010 Elsevier Inc. All rights reserved.
ISSN: 0021-9517
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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