Elucidating the Zeolite Particle Size Effect on Butene/Isobutane Alkylation
文献类型：期刊论文
| 作者 | Yang, Zhiqiang1,2; Zhang, Ruirui2; Liu, Ruixia2,3; Zhang, Suojiang1,2,3 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2022-01-19 |
| 卷号 | 61期号:2页码:1032-1043 |
| ISSN号 | 0888-5885 |
| DOI | 10.1021/acs.iecr.1c02038 |
| 英文摘要 | In this study, X zeolites with average particle sizes of 0.9, 3.2, and 15.0 mu m (labeled as NaX-0.9 mu m, NaX-3.2 mu m, and NaX-15.0 mu m) were prepared. The latter two samples were single crystals, while NaX-0.9 mu m was an aggregate composed of nanosized crystals. After being transferred to their La forms, the alkylation performances of the zeolites were examined in a continuous-flow slurry reactor. Contrary to the general belief that reducing the particle size can effectively enhance catalyst stability, the results showed that LaX-3.2 mu m exhibited better stability than the other two samples. This phenomenon was explained by the balance between acidity and diffusion resistance. Although LaX-15.0 mu m possessed very similar acidities to LaX-3.2 mu m, its active sites cannot be fully utilized due to the diffusion limitations associated with the larger particle size. As for LaX-0.9 mu m, although it was theoretically favorable for product diffusion, it also suffered from more significant dealumination because of the high structural defect concentrations. As a result, LaX-0.9 mu m yielded lower Bronsted acidity, higher Lewis acidity, and weaker acid strength, all of which were disadvantageous for alkylation. Given the tradeoff effect between diffusion resistance and acidity, there is speculated to be an optimal particle size for LaX zeolites when used in a slurry reactor for alkylation. Furthermore, suggestions on catalyst design for isobutane alkylation were provided based on our results. |
| WOS关键词 | ISOBUTANE/BUTENE ALKYLATION ; CATALYSTS ; NMR ; DEACTIVATION ; STABILITY ; CHEMISTRY ; PATHWAYS ; CRYSTALS ; LOCATION ; 2-BUTENE |
| 资助项目 | National Natural Science Foundation of China[21878315] ; National Key Research and Development Program of China[2017YFA0206803] ; Key Programs of the Chinese Academy of Sciences[KFZD-SW-413] ; Key Programs of Innovation Academy for Green Manufacture, CAS[IAGM2020C17] ; K. C. Wong Education Foundation[GJTD-2018-04] ; Major Program of National Natural Science Foundation of China[21890762] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000742115400001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Programs of the Chinese Academy of Sciences ; Key Programs of Innovation Academy for Green Manufacture, CAS ; K. C. Wong Education Foundation ; Major Program of National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/51710]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Liu, Ruixia; Zhang, Suojiang |
| 作者单位 | 1.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Zhiqiang,Zhang, Ruirui,Liu, Ruixia,et al. Elucidating the Zeolite Particle Size Effect on Butene/Isobutane Alkylation[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2022,61(2):1032-1043. |
| APA | Yang, Zhiqiang,Zhang, Ruirui,Liu, Ruixia,&Zhang, Suojiang.(2022).Elucidating the Zeolite Particle Size Effect on Butene/Isobutane Alkylation.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,61(2),1032-1043. |
| MLA | Yang, Zhiqiang,et al."Elucidating the Zeolite Particle Size Effect on Butene/Isobutane Alkylation".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 61.2(2022):1032-1043. |
入库方式： OAI收割
来源：过程工程研究所
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