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Chemistry

Title:		A Lamellar MWW Zeolite With Silicon and Niobium Oxide Pillars: A Catalyst for the Oxidation of Volatile Organic Compounds
Author(s):		Schwanke AJ; Balzer R; Wittee Lopes C; Motta Meira D; Diaz U; Corma A; Pergher S;
Address:		"Universidade Federal do Rio Grande do Su, 91501-970, Porto Alegre, RS, Brasil. Universidade Federal do Parana-UFPR, 85950-000, Palotina, PR, Brasil. CLS@APS sector 20, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA. Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan, S7N 2V3, Canada. Instituto de Tecnologia Quimica, Universitat Politecnica de Valencia-Consejo Superior, de Investigaciones Cientificas, Avenida de los Naranjos s/n, 46022, Valencia, Spain. Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brasil"
Journal Title:		Chemistry
Year:		2020
Volume:		20200809
Issue:		46
Page Number:		10459 - 10470
DOI:		10.1002/chem.202000862
ISSN/ISBN:		1521-3765 (Electronic) 0947-6539 (Linking)
Abstract:		"In this work, an MWW-type zeolite with pillars containing silicon and niobium oxide was synthesized to obtain a hierarchical zeolite. The effect of niobium insertion in the pillaring process was determined by combining a controllable acidity and accessibility in the final material. All pillared materials had niobium occupying framework positions in pillars and extra-framework positions. The pillared material, Pil-Nb-4.5 with 4.5 wt % niobium, did not compromise the mesoporosity formed by pillaring, while the increase of niobium in the structure gradually decreased the mesoporosity and ordering of lamellar stacking. The morphology of the pillared zeolites and the niobium content were found to directly affect the catalytic activity. Specifically, we report on the activity of the MWW-type zeolites with niobium catalyzing the gas-phase oxidation of volatile organic compounds (VOCs), which is an important reaction for clean environmental. All produced MWW-type zeolites with niobium were catalytically active, even at low temperatures and low niobium loading, and provided excellent conversion efficiencies"
Keywords:		Mcm-36 layered compounds niobium oxidation zeolite;
Notes:		"PubMed-not-MEDLINESchwanke, Anderson Joel Balzer, Rosana Wittee Lopes, Christian Motta Meira, Debora Diaz, Urbano Corma, Avelino Pergher, Sibele eng Germany 2020/05/20 Chemistry. 2020 Aug 17; 26(46):10459-10470. doi: 10.1002/chem.202000862. Epub 2020 Aug 9"