Knowledge Management System Of Institute of process engineering,CAS
| Elucidating the Zeolite Particle Size Effect on Butene/Isobutane Alkylation | |
| Yang, Zhiqiang1,2; Zhang, Ruirui2; Liu, Ruixia2,3; Zhang, Suojiang1,2,3 | |
| 2022-01-19 | |
| Source Publication | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| ISSN | 0888-5885 |
| Volume | 61Issue:2Pages:1032-1043 |
| Abstract | 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. |
| DOI | 10.1021/acs.iecr.1c02038 |
| Language | 英语 |
| WOS Keyword | ISOBUTANE/BUTENE ALKYLATION ; CATALYSTS ; NMR ; DEACTIVATION ; STABILITY ; CHEMISTRY ; PATHWAYS ; CRYSTALS ; LOCATION ; 2-BUTENE |
| Funding Project | 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 Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | 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 |
| WOS ID | WOS:000742115400001 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/51711 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Liu, Ruixia; Zhang, Suojiang |
| Affiliation | 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 |
| Recommended Citation 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. |
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