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Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY

[Image: see text] The fast deactivation caused by serious formation of coke is a major challenge in catalytic isomerization of endo-tetrahydrodicyclopentadiene (endo-THDCPD) into exo-tetrahydrodicyclopentadiene (exo-THDCPD) over the HY zeolite. In order to suppress the coke formation for the isomeri...

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Autores principales: Wang, Wenke, Zhao, Jie, Jia, Dandan, Fu, Zhaolin, Xing, Enhui, Zhu, Zhongpeng, Yan, Rui, Tao, Zhiping, Luo, Yibin, Shu, Xingtian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8280701/
https://www.ncbi.nlm.nih.gov/pubmed/34278104
http://dx.doi.org/10.1021/acsomega.1c00212
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author Wang, Wenke
Zhao, Jie
Jia, Dandan
Fu, Zhaolin
Xing, Enhui
Zhu, Zhongpeng
Yan, Rui
Tao, Zhiping
Luo, Yibin
Shu, Xingtian
author_facet Wang, Wenke
Zhao, Jie
Jia, Dandan
Fu, Zhaolin
Xing, Enhui
Zhu, Zhongpeng
Yan, Rui
Tao, Zhiping
Luo, Yibin
Shu, Xingtian
author_sort Wang, Wenke
collection PubMed
description [Image: see text] The fast deactivation caused by serious formation of coke is a major challenge in catalytic isomerization of endo-tetrahydrodicyclopentadiene (endo-THDCPD) into exo-tetrahydrodicyclopentadiene (exo-THDCPD) over the HY zeolite. In order to suppress the coke formation for the isomerization process, the conventional HY zeolite was modified with Pt at 0.3 wt %. Then, the hydroisomerization of endo-THDCPD into exo-THDCPD was evaluated over a fixed-bed reactor. The catalytic stability of Pt/HY was greatly enhanced in comparison to that of the HY zeolite. The Pt/HY catalyst provided 97% endo-THDCPD conversion and 96% selectivity for exo-THDCPD without deactivation after 100 h. Moreover, the formation mechanism of coke on the HY zeolite during the isomerization process was proposed based on the results of the coke analysis. It was indicated that the coke was generated from the oligomerization and condensation of olefin species, which originated from the β-scission reaction or hydride transfer reaction of intermediates. The lower coke formation over Pt/HY was attributed to the lower amount of coke precursors, which could be hydrogenated by activated H(2) over Pt sites. Therefore, Pt on Pt/HY and H(2) were two crucial factors in efficiently enhancing the catalytic stability of the HY zeolite for this isomerization reaction.
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spelling pubmed-82807012021-07-16 Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY Wang, Wenke Zhao, Jie Jia, Dandan Fu, Zhaolin Xing, Enhui Zhu, Zhongpeng Yan, Rui Tao, Zhiping Luo, Yibin Shu, Xingtian ACS Omega [Image: see text] The fast deactivation caused by serious formation of coke is a major challenge in catalytic isomerization of endo-tetrahydrodicyclopentadiene (endo-THDCPD) into exo-tetrahydrodicyclopentadiene (exo-THDCPD) over the HY zeolite. In order to suppress the coke formation for the isomerization process, the conventional HY zeolite was modified with Pt at 0.3 wt %. Then, the hydroisomerization of endo-THDCPD into exo-THDCPD was evaluated over a fixed-bed reactor. The catalytic stability of Pt/HY was greatly enhanced in comparison to that of the HY zeolite. The Pt/HY catalyst provided 97% endo-THDCPD conversion and 96% selectivity for exo-THDCPD without deactivation after 100 h. Moreover, the formation mechanism of coke on the HY zeolite during the isomerization process was proposed based on the results of the coke analysis. It was indicated that the coke was generated from the oligomerization and condensation of olefin species, which originated from the β-scission reaction or hydride transfer reaction of intermediates. The lower coke formation over Pt/HY was attributed to the lower amount of coke precursors, which could be hydrogenated by activated H(2) over Pt sites. Therefore, Pt on Pt/HY and H(2) were two crucial factors in efficiently enhancing the catalytic stability of the HY zeolite for this isomerization reaction. American Chemical Society 2021-06-30 /pmc/articles/PMC8280701/ /pubmed/34278104 http://dx.doi.org/10.1021/acsomega.1c00212 Text en © 2021 The Authors. Published by American Chemical Society 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 Wang, Wenke
Zhao, Jie
Jia, Dandan
Fu, Zhaolin
Xing, Enhui
Zhu, Zhongpeng
Yan, Rui
Tao, Zhiping
Luo, Yibin
Shu, Xingtian
Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY
title Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY
title_full Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY
title_fullStr Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY
title_full_unstemmed Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY
title_short Highly Efficient Hydroisomerization of Endo-Tetrahydrodicyclopentadiene to Exo-Tetrahydrodicyclopentadiene over Pt/HY
title_sort highly efficient hydroisomerization of endo-tetrahydrodicyclopentadiene to exo-tetrahydrodicyclopentadiene over pt/hy
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8280701/
https://www.ncbi.nlm.nih.gov/pubmed/34278104
http://dx.doi.org/10.1021/acsomega.1c00212
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