A designed organic-zeolite hybrid acid-base catalyst

Title: A designed organic-zeolite hybrid acid-base catalyst
Creator: Brooks, Andrew C.; France, Liam; Gayot, Cecile; Li, Jerry Pui Ho; Sault, Ryan; Stafford, Andrew; Wallis, John D.; Stockenhuber, Michael
Relation: Journal of Catalysis Vol. 285, Issue 1, p. 10-18
Publisher Link: http://dx.doi.org/10.1016/j.jcat.2011.09.004
Publisher: Elsevier
Resource Type: journal article
Date: 2012
Description: An organic–zeolite hybrid catalyst was synthesised via solid-state impregnation of the zeolite with an amount of melamine corresponding to 20 mol% of the aluminium content. A high density of basic sites is formed in the zeolite. From infrared spectroscopy and TGA measurements we infer that melaminium cations are formed in the zeolite which are highly thermally stable. IR spectroscopic and TGA measurements showed the presence of melaminium after pre-treatment in vacuum at 450°C. The catalyst exhibited activity in the Knoevenagel condensation reaction between benzaldehyde and ethyl cyanoacetate which is suggested to be promoted by the presence of acid and base sites. The catalyst activity was compared with other known base catalysts including hydrotalcites and magnesium oxide on alumina support.
Subject: base zeolite; organic-inorganic hybrid; in situ IR spectroscopy; Knoevenagel condensation; high thermal stability
Identifier: http://hdl.handle.net/1959.13/1301764
Identifier: uon:20342
Identifier: ISSN:0021-9517
Language: eng
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