Highly mesoporous SAPO-11 molecular sieves with tunable acidity: facile synthesis, formation mechanism and catalytic performance in hydroisomerization of n-dodecane
文献类型：期刊论文
| 作者 | Tao, Shuo1,2; Li, Xiaolei1,2; Lv, Guang2; Wang, Congxin2; Xu, Renshun2; Ma, Huaijun2; Tian, Zhijian1,2 |
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2017-12-07 |
| 卷号 | 7期号:23页码:5775-5784 |
| ISSN号 | 2044-4753 |
| DOI | 10.1039/c7cy01819c |
| 文献子类 | Article |
| 英文摘要 | The pore architecture and acidity of zeolite materials play crucial roles in the activity and selectivity of catalytic reactions. Herein, hierarchical SAPO-11 molecular sieve microspheres with uniform intercrystalline mesoporosity (ca. 4.3 nm) and tunable acidity were synthesized via dry-gel conversion (DGC) of a silicoaluminophosphate-organosilane composite. The products were comprehensively characterized using multiple techniques, including XRD, SEM, TEM, N-2 adsorption-desorption, NH3-TPD, pyridine-adsorbed IR (Py-IR), TG and Si-29 MAS NMR measurements. It is revealed that the products' acidity can be precisely tuned in a wide range by simply adjusting the water content used in the synthesis. The growth of such hierarchical SAPO-11 underwent a rearrangement of the mesopores: the original mesopores (ca. 17 nm) of the precursor were collapsed at the initial stage of crystallization and the final mesopores of the products were directed by the organosilane. More importantly, the Pt/hierarchical SAPO-11 catalysts exhibited enhanced isomerization selectivity in the hydroisomerization of n-dodecane, attributed to their excellent diffusion properties resulting from the hierarchical pore network. This work demonstrates a facile approach to synthesize hierarchical zeolites with tunable acidity, which is beneficial for catalytic reactions involving bulky molecules. |
| WOS关键词 | SURFACTANT-DIRECTED SYNTHESIS ; HIERARCHICAL ZEOLITE-BETA ; MTO PERFORMANCE ; SI DISTRIBUTION ; VEGETABLE-OIL ; TEMPLATE ; ISOMERIZATION ; CONVERSION ; CRYSTALS ; ALKANES |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000417706600034 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168470]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Li, Xiaolei; Tian, Zhijian |
| 作者单位 | 1.Liaocheng Univ, Shandong Prov Key Lab Chem Energy Storage & Novel, Sch Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China 2.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tao, Shuo,Li, Xiaolei,Lv, Guang,et al. Highly mesoporous SAPO-11 molecular sieves with tunable acidity: facile synthesis, formation mechanism and catalytic performance in hydroisomerization of n-dodecane[J]. CATALYSIS SCIENCE & TECHNOLOGY,2017,7(23):5775-5784. |
| APA | Tao, Shuo.,Li, Xiaolei.,Lv, Guang.,Wang, Congxin.,Xu, Renshun.,...&Tian, Zhijian.(2017).Highly mesoporous SAPO-11 molecular sieves with tunable acidity: facile synthesis, formation mechanism and catalytic performance in hydroisomerization of n-dodecane.CATALYSIS SCIENCE & TECHNOLOGY,7(23),5775-5784. |
| MLA | Tao, Shuo,et al."Highly mesoporous SAPO-11 molecular sieves with tunable acidity: facile synthesis, formation mechanism and catalytic performance in hydroisomerization of n-dodecane".CATALYSIS SCIENCE & TECHNOLOGY 7.23(2017):5775-5784. |
入库方式： OAI收割
来源：大连化学物理研究所
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