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| Particle size effect of SiO2-supported ZnO catalysts in propane dehydrogenation | |
| 2023 | |
| 发表期刊 | CATALYSIS SCIENCE AND TECHNOLOGY; (IF:4.4[JCR-2023],4.7[5-Year]) |
| ISSN | 2044-4753 |
| EISSN | 2044-4761 |
| 卷号 | 13期号:6页码:1866-1873 |
| DOI | 10.1039/d2cy02131e |
| 摘要 | Propane dehydrogenation (PDH) has shown great potential to meet the increasing global demand for propylene. However, industrial Pt- and Cr-based catalysts are either costly or toxic. The development of cost-efficient and environmentally friendly catalysts is highly desirable. Herein, we synthesized a series of SiO2-supported ZnO catalysts (ZnO/SiO2) from atomically dispersed species to particles of a few nanometers and to continuous films using atomic layer deposition. In the PDH reaction, we showed that the mass specific rates and propylene selectivity both exhibited a volcano relationship with the size of ZnO, where a ZnO/SiO2 catalyst with a size of approximately 4.8 nm had the maximum PDH activity and a propylene selectivity of 95%, along with good long-term stability for at least 10 h. Photoluminescence spectroscopy and temperature-programmed desorption of NH3 revealed that the amount of oxygen vacancies and acidity sites in ZnO had the same trend with the PDH activity as a function of ZnO size and reached the maximum on the 4.8 nm-sized ZnO/SiO2 catalyst. This result suggests that unsaturated Zn cations accompanied by oxygen vacancies are the active sites for the activation of C-H bonds in propane. |
| 关键词 | Ammonia Atomic layer deposition Catalyst selectivity Catalyst supports Dehydrogenation II-VI semiconductors Oxygen vacancies Particle size Photoluminescence spectroscopy Propane Reaction rates Silica Silicon Temperature programmed desorption Cost-efficient Cr-based catalysts Global demand Particle size effect Propane dehydrogenation Propylene selectivity Pt-based catalyst Synthesised ZnO catalyst ]+ catalyst |
| 学科门类 | Catalysis |
| URL | 查看原文 |
| 收录类别 | SCOPUS ; EI |
| 语种 | 英语 |
| 出版者 | Royal Society of Chemistry |
| EI入藏号 | 20231113694303 |
| EI主题词 | Zinc oxide |
| EI分类号 | 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 712.1 Semiconducting Materials ; 741.3 Optical Devices and Systems ; 802.2 Chemical Reactions ; 802.3 Chemical Operations ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 813.1 Coating Techniques ; 933.1 Crystalline Solids ; 933.1.2 Crystal Growth ; 941.4 Optical Variables Measurements |
| 原始文献类型 | Article |
| Scopus 记录号 | 2-s2.0-85149576560 |
| 来源库 | SCOPUS |
| 引用统计 | 正在获取...
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| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/286506 |
| 专题 | iHuman研究所 iHuman研究所_科学装置(X)_膜蛋白同步辐射线站 |
| 通讯作者 | Lu, Junling |
| 作者单位 | 1.Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Anhui,Hefei,230026,China; 2.School of Chemistry and Materials Science,Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes,University of Science and Technology of China,Anhui,Hefei,230026,China; 3.iHuman Institute,ShanghaiTech University,Shanghai,201210,China |
| 推荐引用方式 GB/T 7714 | Shi, Xianxian,Chen, Si,Li, Shang,et al. Particle size effect of SiO2-supported ZnO catalysts in propane dehydrogenation[J]. CATALYSIS SCIENCE AND TECHNOLOGY;,2023,13(6):1866-1873. |
| APA | Shi, Xianxian.,Chen, Si.,Li, Shang.,Yang, Yuqi.,Guan, Qiaoqiao.,...&Lu, Junling.(2023).Particle size effect of SiO2-supported ZnO catalysts in propane dehydrogenation.CATALYSIS SCIENCE AND TECHNOLOGY;,13(6),1866-1873. |
| MLA | Shi, Xianxian,et al."Particle size effect of SiO2-supported ZnO catalysts in propane dehydrogenation".CATALYSIS SCIENCE AND TECHNOLOGY; 13.6(2023):1866-1873. |
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