MFI zeolite coating with intrazeolitic aluminum (acidic) gradient supported on SiC foams to improve the methanol-to-propylene (MTP) reaction

doi:10.1016/j.apcata.2018.04.006

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	MFI zeolite coating with intrazeolitic aluminum (acidic) gradient supported on SiC foams to improve the methanol-to-propylene (MTP) reaction
	Jiao, Yilai 1,2,3; Xu, Shaojun 2; Jiang, Chunhai 4,5; Perdjon, Michal 3; Fan, Xiaolei 2; Zhang, Jinsong 1
刊名	APPLIED CATALYSIS A-GENERAL
	2018-06-05
卷号	559 页码:1-9
关键词	MFI zeolite Methanol-to-propylene (MTP) SiC foam Aluminum gradient Anti-coking
ISSN号	0926-860X
DOI	10.1016/j.apcata.2018.04.006
通讯作者	Fan, Xiaolei(xiaolei.fan@manchester.ac.uk) ; Zhang, Jinsong(jshzhang@imr.ac.cn)
英文摘要	To hinder the deactivation and improve the propylene selectivity in the methanol-to-propylene (MTP) reaction, MFI coating with the intrazeolitic aluminum (acidic) gradient supported on SiC foam support (G-MFI/SiC foam) was proposed. The solid polycrystalline silicon was used in the synthesis of G-MFI/SiC foam catalyst provided a prolonged release of silica nutrient in the liquid phase and suppressed the precipitation phenomena. The resulting MFI coating showed the aluminum gradient along the surface normal direction of SiC foams with ZSM-5 layer (about 20 pm) near the SiC surface followed by the silicalite-1 layer (about 10 pm). The alumina (acidic) gradient in the MFI coating renders a passive outer layer of silicalite-1 with fairly large amount of weak and medium acid sites prevented the coke formation as well as promoted the selectivity to propylene in the MTP reaction. Compared to the conventional ZSM-5/SiC foam catalyst, the G-MFI/SiC foam catalyst showed excellent performance in the MTP reaction with good catalytic longevity (8 h vs. 76 h for > 95% methanol conversion) and low coke deposition (6.7 x 10(-3) wt.% h(-1) vs. 0.26 wt.% h(-1)), as well as high propylene selectivity (ca. 36% vs. 46%).
资助项目	National 863 Program of China[2012AA030304] ; Engineering and Physical Sciences Research Council[EP/R000670/1] ; China Scholarship Council (CSC)[201604910181] ; University of Manchester
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000434887800001
资助机构	National 863 Program of China ; Engineering and Physical Sciences Research Council ; China Scholarship Council (CSC) ; University of Manchester
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128064]
专题	金属研究所_中国科学院金属研究所
通讯作者	Fan, Xiaolei; Zhang, Jinsong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Manchester, Sch Chem Engn & Analyt Sci, Oxford Rd, Manchester M13 9PL, Lancs, England 3.Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Pk Pl, Cardiff CF10 3AT, S Glam, Wales 4.Xiamen Univ Technol, Inst Adv Energy Mat, Sch Mat Sci & Engn, 600 Ligong Rd, Xiamen 361024, Peoples R China 5.Key Lab Funct Mat & Applicat Fujian Prov, 600 Ligong Rd, Xiamen 361024, Peoples R China
推荐引用方式 GB/T 7714	Jiao, Yilai,Xu, Shaojun,Jiang, Chunhai,et al. MFI zeolite coating with intrazeolitic aluminum (acidic) gradient supported on SiC foams to improve the methanol-to-propylene (MTP) reaction[J]. APPLIED CATALYSIS A-GENERAL,2018,559:1-9.
APA	Jiao, Yilai,Xu, Shaojun,Jiang, Chunhai,Perdjon, Michal,Fan, Xiaolei,&Zhang, Jinsong.(2018).MFI zeolite coating with intrazeolitic aluminum (acidic) gradient supported on SiC foams to improve the methanol-to-propylene (MTP) reaction.APPLIED CATALYSIS A-GENERAL,559,1-9.
MLA	Jiao, Yilai,et al."MFI zeolite coating with intrazeolitic aluminum (acidic) gradient supported on SiC foams to improve the methanol-to-propylene (MTP) reaction".APPLIED CATALYSIS A-GENERAL 559(2018):1-9.