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MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration

MCM-22, MCM-36, and ITQ-2 zeolites with the intended Si/Al molar ratios of 15, 25, and 50 were synthetized and tested as catalysts for dehydration of methanol to dimethyl ether and dehydration of ethanol to diethyl ether and ethylene. The surface concentration of acid sites was regulated by the synt...

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Autores principales: Marosz, Monika, Samojeden, Bogdan, Kowalczyk, Andrzej, Rutkowska, Małgorzata, Motak, Monika, Díaz, Urbano, Palomares, Antonio E., Chmielarz, Lucjan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288170/
https://www.ncbi.nlm.nih.gov/pubmed/32456028
http://dx.doi.org/10.3390/ma13102399
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author Marosz, Monika
Samojeden, Bogdan
Kowalczyk, Andrzej
Rutkowska, Małgorzata
Motak, Monika
Díaz, Urbano
Palomares, Antonio E.
Chmielarz, Lucjan
author_facet Marosz, Monika
Samojeden, Bogdan
Kowalczyk, Andrzej
Rutkowska, Małgorzata
Motak, Monika
Díaz, Urbano
Palomares, Antonio E.
Chmielarz, Lucjan
author_sort Marosz, Monika
collection PubMed
description MCM-22, MCM-36, and ITQ-2 zeolites with the intended Si/Al molar ratios of 15, 25, and 50 were synthetized and tested as catalysts for dehydration of methanol to dimethyl ether and dehydration of ethanol to diethyl ether and ethylene. The surface concentration of acid sites was regulated by the synthesis of zeolite precursors with different aluminum content in the zeolite framework, while the influence of porous structure on the overall efficiency of alcohol conversion was analyzed by application of zeolitic materials with different types of porosity—microporous MCM-22 as well as microporous-mesoporous MCM-36 and ITQ-2. The zeolitic samples were characterized with respect to their: chemical composition (ICP-OES), structure (XRD, FT-IR), texture (N(2) sorption), and surface acidity (NH(3)-TPD). Comparison of the catalytic activity of the studied zeolitic catalysts with other reported catalytic systems, including zeolites with the similar Si/Al ratio as well as γ-Al(2)O(3) (one of the commercial catalysts for methanol dehydration), shows a great potential of MCM-22, MCM-36, and ITQ-2 in the reactions of alcohols dehydration.
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spelling pubmed-72881702020-06-17 MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration Marosz, Monika Samojeden, Bogdan Kowalczyk, Andrzej Rutkowska, Małgorzata Motak, Monika Díaz, Urbano Palomares, Antonio E. Chmielarz, Lucjan Materials (Basel) Article MCM-22, MCM-36, and ITQ-2 zeolites with the intended Si/Al molar ratios of 15, 25, and 50 were synthetized and tested as catalysts for dehydration of methanol to dimethyl ether and dehydration of ethanol to diethyl ether and ethylene. The surface concentration of acid sites was regulated by the synthesis of zeolite precursors with different aluminum content in the zeolite framework, while the influence of porous structure on the overall efficiency of alcohol conversion was analyzed by application of zeolitic materials with different types of porosity—microporous MCM-22 as well as microporous-mesoporous MCM-36 and ITQ-2. The zeolitic samples were characterized with respect to their: chemical composition (ICP-OES), structure (XRD, FT-IR), texture (N(2) sorption), and surface acidity (NH(3)-TPD). Comparison of the catalytic activity of the studied zeolitic catalysts with other reported catalytic systems, including zeolites with the similar Si/Al ratio as well as γ-Al(2)O(3) (one of the commercial catalysts for methanol dehydration), shows a great potential of MCM-22, MCM-36, and ITQ-2 in the reactions of alcohols dehydration. MDPI 2020-05-22 /pmc/articles/PMC7288170/ /pubmed/32456028 http://dx.doi.org/10.3390/ma13102399 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Marosz, Monika
Samojeden, Bogdan
Kowalczyk, Andrzej
Rutkowska, Małgorzata
Motak, Monika
Díaz, Urbano
Palomares, Antonio E.
Chmielarz, Lucjan
MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration
title MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration
title_full MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration
title_fullStr MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration
title_full_unstemmed MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration
title_short MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration
title_sort mcm-22, mcm-36, and itq-2 zeolites with different si/al molar ratios as effective catalysts of methanol and ethanol dehydration
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7288170/
https://www.ncbi.nlm.nih.gov/pubmed/32456028
http://dx.doi.org/10.3390/ma13102399
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