Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction

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	Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction
	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
	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
内容类型	期刊论文
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.