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Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis

Phosphorus and microporous aluminosilicates, better known as zeolites, have a unique but poorly understood relationship. For example, phosphatation of the industrially important zeolite H-ZSM-5 is a well-known, relatively inexpensive and seemingly straightforward post-synthetic modification applied...

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Autores principales: van der Bij, Hendrik E., Weckhuysen, Bert M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4672753/
https://www.ncbi.nlm.nih.gov/pubmed/26051875
http://dx.doi.org/10.1039/c5cs00109a
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author van der Bij, Hendrik E.
Weckhuysen, Bert M.
author_facet van der Bij, Hendrik E.
Weckhuysen, Bert M.
author_sort van der Bij, Hendrik E.
collection PubMed
description Phosphorus and microporous aluminosilicates, better known as zeolites, have a unique but poorly understood relationship. For example, phosphatation of the industrially important zeolite H-ZSM-5 is a well-known, relatively inexpensive and seemingly straightforward post-synthetic modification applied by the chemical industry not only to alter its hydrothermal stability and acidity, but also to increase its selectivity towards light olefins in hydrocarbon catalysis. On the other hand, phosphorus poisoning of zeolite-based catalysts, which are used for removing nitrogen oxides from exhaust fuels, poses a problem for their use in diesel engine catalysts. Despite the wide impact of phosphorus–zeolite chemistry, the exact physicochemical processes that take place require a more profound understanding. This review article provides the reader with a comprehensive and state-of-the-art overview of the academic literature, from the first reports in the late 1970s until the most recent studies. In the first part an in-depth analysis is undertaken, which will reveal universal physicochemical and structural effects of phosphorus–zeolite chemistry on the framework structure, accessibility, and strength of acid sites. The second part discusses the hydrothermal stability of zeolites and clarifies the promotional role that phosphorus plays. The third part of the review paper links the structural and physicochemical effects of phosphorus on zeolite materials with their catalytic performance in a variety of catalytic processes, including alkylation of aromatics, catalytic cracking, methanol-to-hydrocarbon processing, dehydration of bioalcohol, and ammonia selective catalytic reduction (SCR) of NO(x). Based on these insights, we discuss potential applications and important directions for further research.
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spelling pubmed-46727532015-12-21 Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis van der Bij, Hendrik E. Weckhuysen, Bert M. Chem Soc Rev Chemistry Phosphorus and microporous aluminosilicates, better known as zeolites, have a unique but poorly understood relationship. For example, phosphatation of the industrially important zeolite H-ZSM-5 is a well-known, relatively inexpensive and seemingly straightforward post-synthetic modification applied by the chemical industry not only to alter its hydrothermal stability and acidity, but also to increase its selectivity towards light olefins in hydrocarbon catalysis. On the other hand, phosphorus poisoning of zeolite-based catalysts, which are used for removing nitrogen oxides from exhaust fuels, poses a problem for their use in diesel engine catalysts. Despite the wide impact of phosphorus–zeolite chemistry, the exact physicochemical processes that take place require a more profound understanding. This review article provides the reader with a comprehensive and state-of-the-art overview of the academic literature, from the first reports in the late 1970s until the most recent studies. In the first part an in-depth analysis is undertaken, which will reveal universal physicochemical and structural effects of phosphorus–zeolite chemistry on the framework structure, accessibility, and strength of acid sites. The second part discusses the hydrothermal stability of zeolites and clarifies the promotional role that phosphorus plays. The third part of the review paper links the structural and physicochemical effects of phosphorus on zeolite materials with their catalytic performance in a variety of catalytic processes, including alkylation of aromatics, catalytic cracking, methanol-to-hydrocarbon processing, dehydration of bioalcohol, and ammonia selective catalytic reduction (SCR) of NO(x). Based on these insights, we discuss potential applications and important directions for further research. Royal Society of Chemistry 2015-10-21 2015-10-05 /pmc/articles/PMC4672753/ /pubmed/26051875 http://dx.doi.org/10.1039/c5cs00109a Text en This journal is © The Royal Society of Chemistry 2015 http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Chemistry
van der Bij, Hendrik E.
Weckhuysen, Bert M.
Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
title Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
title_full Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
title_fullStr Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
title_full_unstemmed Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
title_short Phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
title_sort phosphorus promotion and poisoning in zeolite-based materials: synthesis, characterisation and catalysis
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4672753/
https://www.ncbi.nlm.nih.gov/pubmed/26051875
http://dx.doi.org/10.1039/c5cs00109a
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