Mesoporous MFI Zeolite Nanosponge as a High-Performance Catalyst in the Pechmann Condensation Reaction

0446838 - ÚFCH JH 2016 RIV US eng J - Journal Article
Kim, J. Ch. - Ryoo, R. - Opanasenko, Maksym - Shamzhy, Mariya - Čejka, Jiří
Mesoporous MFI Zeolite Nanosponge as a High-Performance Catalyst in the Pechmann Condensation Reaction.
ACS Catalysis. Roč. 5, č. 4 (2015), s. 2596-2604. ISSN 2155-5435. E-ISSN 2155-5435
R&D Projects: GA ČR(CZ) GAP106/12/0189
Institutional support: RVO:61388955
Keywords : nanomorphic zeolite * MFI * hierarchical zeolite
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 9.307, year: 2015

A zeolite nanosponge possessing MFI framework type was hydrothermally prepared by a seed-assisted synthesis method using C22H45-N+ (CH3)(2)-C6H12-N+(CH3)(2)-C6H13 as a structure-directing agent. The nanosponge morphology was composed of a three-dimensional disordered network of MFI nanolayers with 2.5 nm thickness supporting each other. Catalytic performance of the MFI nanosponge was investigated in the Pechmann condensation of bulky reactants (pyrogallol and resorcinol) with ethyl acetoacetate and compared with conventional zeolites MFI, BEA, and USY) and also layered MFI, pillared MFI, and self-pillared MFI. The investigation revealed outstanding catalytic performance of the MFI nanosponge, which can be attributed to the contribution of strong acid sites located on the external surfaces accessible for the reaction of bulky reactants.
Permanent Link: http://hdl.handle.net/11104/0248802