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Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts
Direct synthesis of light olefins from syngas (STO) using a bifunctional catalyst composed of oxide and zeolite has attracted extensive attention in both academia and industry. It is highly desirable to develop robust catalysts that could enhance the CO conversion while simultaneously maintain high...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6428864/ https://www.ncbi.nlm.nih.gov/pubmed/30899003 http://dx.doi.org/10.1038/s41467-019-09336-1 |
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author | Su, Junjie Zhou, Haibo Liu, Su Wang, Chuanming Jiao, Wenqian Wang, Yangdong Liu, Chang Ye, Yingchun Zhang, Lin Zhao, Yu Liu, Hongxing Wang, Dong Yang, Weimin Xie, Zaiku He, Mingyuan |
author_facet | Su, Junjie Zhou, Haibo Liu, Su Wang, Chuanming Jiao, Wenqian Wang, Yangdong Liu, Chang Ye, Yingchun Zhang, Lin Zhao, Yu Liu, Hongxing Wang, Dong Yang, Weimin Xie, Zaiku He, Mingyuan |
author_sort | Su, Junjie |
collection | PubMed |
description | Direct synthesis of light olefins from syngas (STO) using a bifunctional catalyst composed of oxide and zeolite has attracted extensive attention in both academia and industry. It is highly desirable to develop robust catalysts that could enhance the CO conversion while simultaneously maintain high selectivity to C2-C4 olefins. Herein, we report a bifunctional catalyst consisting of ZnCr binary oxide (ZnCrO(x)) and low-Si AlPO-18 zeolite, showing both satisfying selectivity to C2-C4 olefins of 45.0% (86.7%, CO(2) free) and high olefin/paraffin ratio of 29.9 at the CO conversion of 25.2% under mild reaction conditions (4.0 MPa, 390 °C). By optimizing the reaction conditions, the CO conversion could be markedly increased to 49.3% with a slight drop in selectivity. CD(3)CN/CO-FTIR characterizations and theoretical calculations demonstrate that low-Si AlPO-18 zeolite has lower acid strength, and is therefore less reactive toward the hydride transfer in the STO reaction, leading to a higher olefin/paraffin ratio. |
format | Online Article Text |
id | pubmed-6428864 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-64288642019-03-25 Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts Su, Junjie Zhou, Haibo Liu, Su Wang, Chuanming Jiao, Wenqian Wang, Yangdong Liu, Chang Ye, Yingchun Zhang, Lin Zhao, Yu Liu, Hongxing Wang, Dong Yang, Weimin Xie, Zaiku He, Mingyuan Nat Commun Article Direct synthesis of light olefins from syngas (STO) using a bifunctional catalyst composed of oxide and zeolite has attracted extensive attention in both academia and industry. It is highly desirable to develop robust catalysts that could enhance the CO conversion while simultaneously maintain high selectivity to C2-C4 olefins. Herein, we report a bifunctional catalyst consisting of ZnCr binary oxide (ZnCrO(x)) and low-Si AlPO-18 zeolite, showing both satisfying selectivity to C2-C4 olefins of 45.0% (86.7%, CO(2) free) and high olefin/paraffin ratio of 29.9 at the CO conversion of 25.2% under mild reaction conditions (4.0 MPa, 390 °C). By optimizing the reaction conditions, the CO conversion could be markedly increased to 49.3% with a slight drop in selectivity. CD(3)CN/CO-FTIR characterizations and theoretical calculations demonstrate that low-Si AlPO-18 zeolite has lower acid strength, and is therefore less reactive toward the hydride transfer in the STO reaction, leading to a higher olefin/paraffin ratio. Nature Publishing Group UK 2019-03-21 /pmc/articles/PMC6428864/ /pubmed/30899003 http://dx.doi.org/10.1038/s41467-019-09336-1 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Su, Junjie Zhou, Haibo Liu, Su Wang, Chuanming Jiao, Wenqian Wang, Yangdong Liu, Chang Ye, Yingchun Zhang, Lin Zhao, Yu Liu, Hongxing Wang, Dong Yang, Weimin Xie, Zaiku He, Mingyuan Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts |
title | Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts |
title_full | Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts |
title_fullStr | Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts |
title_full_unstemmed | Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts |
title_short | Syngas to light olefins conversion with high olefin/paraffin ratio using ZnCrO(x)/AlPO-18 bifunctional catalysts |
title_sort | syngas to light olefins conversion with high olefin/paraffin ratio using zncro(x)/alpo-18 bifunctional catalysts |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6428864/ https://www.ncbi.nlm.nih.gov/pubmed/30899003 http://dx.doi.org/10.1038/s41467-019-09336-1 |
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