Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation
Due to the complexity of the structure–activity relationship of the CuAl2O4 spinel catalyst, optimization of the catalyst structure is a great challenge. In this paper, three different CuAl2O4 spinel catalysts were prepared by the solid-phase method using copper hydroxide, copper nitrate, and copper...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Arabian Journal of Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535222007808 |
| _version_ | 1797952741773934592 |
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| author | Lusheng Shi Pengquan Yan Zhihua Gao Wei Huang |
| author_facet | Lusheng Shi Pengquan Yan Zhihua Gao Wei Huang |
| author_sort | Lusheng Shi |
| collection | DOAJ |
| description | Due to the complexity of the structure–activity relationship of the CuAl2O4 spinel catalyst, optimization of the catalyst structure is a great challenge. In this paper, three different CuAl2O4 spinel catalysts were prepared by the solid-phase method using copper hydroxide, copper nitrate, and copper oxide as the copper source, respectively, to study the difference in the structure of CuAl2O4 spinel catalysts induced by the raw materials and the catalytic behavior for CO hydrogenation. The structure of CuAl2O4 spinel catalyst was characterized by XRD, BET, SEM, TEM, H2-TPR and XPS. The activity of CO hydrogenation over the CuAl2O4 spinel catalyst without pre-reduction was evaluated in the slurry reactor. The results demonstrated that different copper sources had obvious influence on the CuAl2O4 spinel texture properties, surface enrichment degree, as well as decomposition and reduction ability, which further regulated the ratio of Cu+/Cu0 and thus affected the catalytic performance, especially the alcohol distribution. The CuAl2O4 spinel, employing copper hydroxide as the copper source, showed better selectivity of C2+OH, which was assigned to a higher ratio of Cu+/Cu0, along with larger pore size and pore volume. Moreover, the synergistic effect between Cu0 and γ-Al2O3 improved the selectivity of dimethyl ether. |
| first_indexed | 2024-04-10T22:52:09Z |
| format | Article |
| id | doaj.art-051dad72df0d4ae1ae0fe21a94c62af7 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-10T22:52:09Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-051dad72df0d4ae1ae0fe21a94c62af72023-01-15T04:21:36ZengElsevierArabian Journal of Chemistry1878-53522023-02-01162104464Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenationLusheng Shi0Pengquan Yan1Zhihua Gao2Wei Huang3State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, ChinaState Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, ChinaCorresponding author.; State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, ChinaState Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, ChinaDue to the complexity of the structure–activity relationship of the CuAl2O4 spinel catalyst, optimization of the catalyst structure is a great challenge. In this paper, three different CuAl2O4 spinel catalysts were prepared by the solid-phase method using copper hydroxide, copper nitrate, and copper oxide as the copper source, respectively, to study the difference in the structure of CuAl2O4 spinel catalysts induced by the raw materials and the catalytic behavior for CO hydrogenation. The structure of CuAl2O4 spinel catalyst was characterized by XRD, BET, SEM, TEM, H2-TPR and XPS. The activity of CO hydrogenation over the CuAl2O4 spinel catalyst without pre-reduction was evaluated in the slurry reactor. The results demonstrated that different copper sources had obvious influence on the CuAl2O4 spinel texture properties, surface enrichment degree, as well as decomposition and reduction ability, which further regulated the ratio of Cu+/Cu0 and thus affected the catalytic performance, especially the alcohol distribution. The CuAl2O4 spinel, employing copper hydroxide as the copper source, showed better selectivity of C2+OH, which was assigned to a higher ratio of Cu+/Cu0, along with larger pore size and pore volume. Moreover, the synergistic effect between Cu0 and γ-Al2O3 improved the selectivity of dimethyl ether.http://www.sciencedirect.com/science/article/pii/S1878535222007808CuAl2O4CO hydrogenationSlurry reactorCatalystHigher alcoholsDimethyl ether |
| spellingShingle | Lusheng Shi Pengquan Yan Zhihua Gao Wei Huang Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation Arabian Journal of Chemistry CuAl2O4 CO hydrogenation Slurry reactor Catalyst Higher alcohols Dimethyl ether |
| title | Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation |
| title_full | Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation |
| title_fullStr | Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation |
| title_full_unstemmed | Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation |
| title_short | Effect of copper source on the structure–activity of CuAl2O4 spinel catalysts for CO hydrogenation |
| title_sort | effect of copper source on the structure activity of cual2o4 spinel catalysts for co hydrogenation |
| topic | CuAl2O4 CO hydrogenation Slurry reactor Catalyst Higher alcohols Dimethyl ether |
| url | http://www.sciencedirect.com/science/article/pii/S1878535222007808 |
| work_keys_str_mv | AT lushengshi effectofcoppersourceonthestructureactivityofcual2o4spinelcatalystsforcohydrogenation AT pengquanyan effectofcoppersourceonthestructureactivityofcual2o4spinelcatalystsforcohydrogenation AT zhihuagao effectofcoppersourceonthestructureactivityofcual2o4spinelcatalystsforcohydrogenation AT weihuang effectofcoppersourceonthestructureactivityofcual2o4spinelcatalystsforcohydrogenation |