Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction
文献类型：期刊论文
| 作者 | Jiao, Yilai; Fan, Xiaolei; Perdjon, Michal; Yang, Zhenming; Zhang, Jinsong; Zhang, JS (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | ELSEVIER SCIENCE BV
 |
| 出版日期 | 2017-09-05 |
| 卷号 | 545页码:104-112 |
| 关键词 | Vapor-phase Transport (Vpt) Tetrapropylammonium Hydroxide (Tpaoh) Zsm-5 Sic Foam Structured Catalyst Methanol-to-propylene (Mtp) Thermal Conductivity |
| ISSN号 | 0926-860X |
| 英文摘要 | Tetrapropylammonium hydroxide (TPAOH) was introduced in the vapor phase to perform the vapor-phase transport (VPT) modification of the structured ZSM-5 supported on SiC foam (ZSM-5/SiC foam) catalyst. An optimum precursor concentration of 0.5 M TPAOH could effectively convert the amorphous aluminosilicate binder to the zeolitic phase with improved intracrystal mesopores, nanosized crystals (ca. 100 nm), high concentration of acidity sites (83 mmol g(-1)) as well as a high value of the relative acidity (0.7). Combined with the intrinsic property of macroscopic SiC foams such as the low pressure drop and the high thermal conductivity (14 W m(-1) K-1 at 773 K), TPAOH VPT modified ZSM-5/SiC foam catalyst demonstrated an excellent activity in the catalytic methanol-to-propylene (MTP) reaction, surpassing the state-of-the-art hierarchal ZSM-5 monolith catalyst. The catalyst showed an extended activity for ca. 970 h (> 95% methanol conversion) with the high selectivity to the propylene (> 45%). The coke formation was significantly retarded (ca. 2.1 x 10(-2) wt.% h(-1)) due to the enhanced transport phenomena within the developed structured catalyst.; Tetrapropylammonium hydroxide (TPAOH) was introduced in the vapor phase to perform the vapor-phase transport (VPT) modification of the structured ZSM-5 supported on SiC foam (ZSM-5/SiC foam) catalyst. An optimum precursor concentration of 0.5 M TPAOH could effectively convert the amorphous aluminosilicate binder to the zeolitic phase with improved intracrystal mesopores, nanosized crystals (ca. 100 nm), high concentration of acidity sites (83 mmol g(-1)) as well as a high value of the relative acidity (0.7). Combined with the intrinsic property of macroscopic SiC foams such as the low pressure drop and the high thermal conductivity (14 W m(-1) K-1 at 773 K), TPAOH VPT modified ZSM-5/SiC foam catalyst demonstrated an excellent activity in the catalytic methanol-to-propylene (MTP) reaction, surpassing the state-of-the-art hierarchal ZSM-5 monolith catalyst. The catalyst showed an extended activity for ca. 970 h (> 95% methanol conversion) with the high selectivity to the propylene (> 45%). The coke formation was significantly retarded (ca. 2.1 x 10(-2) wt.% h(-1)) due to the enhanced transport phenomena within the developed structured catalyst. |
| 学科主题 | Chemistry, Physical ; Environmental Sciences |
| 语种 | 英语 |
| 资助机构 | National 863 Program of China [2012AA030304]; Engineering and Physical Sciences Research Council [EP/R000670/1]; China Scholarship Council (CSC) [201604910181]; University of Manchester |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79105]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, JS (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Jiao, Yilai,Fan, Xiaolei,Perdjon, Michal,et al. Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction[J]. ELSEVIER SCIENCE BV,2017,545:104-112. |
| APA | Jiao, Yilai,Fan, Xiaolei,Perdjon, Michal,Yang, Zhenming,Zhang, Jinsong,&Zhang, JS .(2017).Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction.ELSEVIER SCIENCE BV,545,104-112. |
| MLA | Jiao, Yilai,et al."Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction".ELSEVIER SCIENCE BV 545(2017):104-112. |
入库方式： OAI收割
来源：金属研究所
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