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In Situ Synthesis of Metal-Containing ZSM-5 and Its Catalytic Performance in Aromatization of Methanol
[Image: see text] Metal-containing ZSM-5 zeolites, denoted as M/ZSM-5 (M = Ga, Zn, and La), were prepared by an in situ synthetic method. The structural, textural, and surface acid properties of M/ZSM-5 were characterized by XRD, N(2) adsorption–desorption, NH(3)-TPD, and FT-IR. The catalyst pore si...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9301955/ https://www.ncbi.nlm.nih.gov/pubmed/35874220 http://dx.doi.org/10.1021/acsomega.2c01442 |
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author | Zhang, Yanjun Liu, Yao Li, Jianwei |
author_facet | Zhang, Yanjun Liu, Yao Li, Jianwei |
author_sort | Zhang, Yanjun |
collection | PubMed |
description | [Image: see text] Metal-containing ZSM-5 zeolites, denoted as M/ZSM-5 (M = Ga, Zn, and La), were prepared by an in situ synthetic method. The structural, textural, and surface acid properties of M/ZSM-5 were characterized by XRD, N(2) adsorption–desorption, NH(3)-TPD, and FT-IR. The catalyst pore size and the distribution of strong acid and weak acid were affected by the introduction of metal. Considering the methanol-to-aromatics model reaction, the catalytic performance of these samples was investigated in a fixed bed reactor under the conditions of 450 °C and a liquid weight hourly space velocity (WHSV) of 5 h(–1). The results indicated that the Zn/ZSM-5 molecular sieve was most beneficial to aromatization; the relationship between the change of B/L caused by Zn content and aromatics selectivity was further studied. When the B/L value decreased, the selectivity of aromatics showed an initial increase and then a decrease. The B/L value was optimal, and the aromatics yield was the highest when the Zn loading was 0.35%. |
format | Online Article Text |
id | pubmed-9301955 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-93019552022-07-22 In Situ Synthesis of Metal-Containing ZSM-5 and Its Catalytic Performance in Aromatization of Methanol Zhang, Yanjun Liu, Yao Li, Jianwei ACS Omega [Image: see text] Metal-containing ZSM-5 zeolites, denoted as M/ZSM-5 (M = Ga, Zn, and La), were prepared by an in situ synthetic method. The structural, textural, and surface acid properties of M/ZSM-5 were characterized by XRD, N(2) adsorption–desorption, NH(3)-TPD, and FT-IR. The catalyst pore size and the distribution of strong acid and weak acid were affected by the introduction of metal. Considering the methanol-to-aromatics model reaction, the catalytic performance of these samples was investigated in a fixed bed reactor under the conditions of 450 °C and a liquid weight hourly space velocity (WHSV) of 5 h(–1). The results indicated that the Zn/ZSM-5 molecular sieve was most beneficial to aromatization; the relationship between the change of B/L caused by Zn content and aromatics selectivity was further studied. When the B/L value decreased, the selectivity of aromatics showed an initial increase and then a decrease. The B/L value was optimal, and the aromatics yield was the highest when the Zn loading was 0.35%. American Chemical Society 2022-07-10 /pmc/articles/PMC9301955/ /pubmed/35874220 http://dx.doi.org/10.1021/acsomega.2c01442 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Zhang, Yanjun Liu, Yao Li, Jianwei In Situ Synthesis of Metal-Containing ZSM-5 and Its Catalytic Performance in Aromatization of Methanol |
title | In Situ Synthesis
of Metal-Containing ZSM-5
and Its Catalytic Performance in Aromatization of Methanol |
title_full | In Situ Synthesis
of Metal-Containing ZSM-5
and Its Catalytic Performance in Aromatization of Methanol |
title_fullStr | In Situ Synthesis
of Metal-Containing ZSM-5
and Its Catalytic Performance in Aromatization of Methanol |
title_full_unstemmed | In Situ Synthesis
of Metal-Containing ZSM-5
and Its Catalytic Performance in Aromatization of Methanol |
title_short | In Situ Synthesis
of Metal-Containing ZSM-5
and Its Catalytic Performance in Aromatization of Methanol |
title_sort | in situ synthesis
of metal-containing zsm-5
and its catalytic performance in aromatization of methanol |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9301955/ https://www.ncbi.nlm.nih.gov/pubmed/35874220 http://dx.doi.org/10.1021/acsomega.2c01442 |
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