Creating hierarchies promptly: Microwave-accelerated synthesis of ZSM-5 zeolites on macrocellular silicon carbide (SiC) foams

CORC > 金属研究所 > 中国科学院金属研究所

	Creating hierarchies promptly: Microwave-accelerated synthesis of ZSM-5 zeolites on macrocellular silicon carbide (SiC) foams
	Ou, Xiaoxia ; Xu, Shaojun ; Warnett, Jason M. ; Holmes, Stuart M. ; Zaheer, Amber ; Garforth, Arthur A. ; Williams, Mark A. ; Jiao, Yilai ; Fan, Xiaolei
刊名	CHEMICAL ENGINEERING JOURNAL
	2017-03-15
卷号	312 页码:1-9
关键词	Microwave-accelerated synthesis Secondary growth synthesis ZSM-5 SiC foam Differential heating, X-ray micro computed tomography (mu-CT)
ISSN号	1385-8947
通讯作者	Fan, XL (reprint author), Univ Manchester, Sch Chem Engn & Analyt Sci, Oxford Rd, Manchester, Lancs, England. ; Jiao, YL (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
中文摘要	Hierarchical ZSM-5 coatings supported on macrocellular beta-sic foams were prepared by a microwave accelerated secondary growth method. Under microwave irradiation, differential heating was enabled due to the high microwave-adsorbing ability of SiC leading to the fast assembly of ZSM-5 zeolites on the SiC foams. The effects of crystallisation temperature, time and agitation on the growth of ZSM-5 zeolites on SiC foams were also investigated under microwave heating. A specific surface area of ca. 52 m(2) g(-1) was obtained under the optimum condition of 150 degrees C and 4 h. Comparative studies of conventional hydrothermal and microwave-accelerated synthesis were conducted and the resulting materials were characterised extensively using XRD, SEM and N-2 adsorption. The combination of microwave heating, high microwave absorption of SiC substrates and agitation allowed a much more focused heating across the surface of SiC foams than conventional heating, which suppressed the formation of ZSM-5 crystals in the liquid phase and the consequent sedimentation. Additionally, for the first time, mesoscopic features of ZSM-5 coatings on SiC foam composites (>10 pm) were studied in 3D by X-ray micro computed tomography (mu-CT), providing quantitative information on the quality of the ZSM-5 coating such as the global thickness and distribution of ZSM-5 across the SiC foam supports. It was concluded that microwave-accelerated secondary growth synthesis offered an efficient route to give high quality coatings on structured foams with the good crystal quality and uniform thickness as well as lower energy consumption, especially for the substrate with a high loss tangent. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.
学科主题	Engineering, Environmental ; Engineering, Chemical
收录类别	SCI
资助信息	University of Manchester through Higher Education Innovation Funded 'Knowledge and Innovation Hub for Environmental Sustainability'; China Scholarship Council (CSC) - China [201604910181]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78235]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Ou, Xiaoxia,Xu, Shaojun,Warnett, Jason M.,et al. Creating hierarchies promptly: Microwave-accelerated synthesis of ZSM-5 zeolites on macrocellular silicon carbide (SiC) foams[J]. CHEMICAL ENGINEERING JOURNAL,2017,312:1-9.
APA	Ou, Xiaoxia.,Xu, Shaojun.,Warnett, Jason M..,Holmes, Stuart M..,Zaheer, Amber.,...&Fan, Xiaolei.(2017).Creating hierarchies promptly: Microwave-accelerated synthesis of ZSM-5 zeolites on macrocellular silicon carbide (SiC) foams.CHEMICAL ENGINEERING JOURNAL,312,1-9.
MLA	Ou, Xiaoxia,et al."Creating hierarchies promptly: Microwave-accelerated synthesis of ZSM-5 zeolites on macrocellular silicon carbide (SiC) foams".CHEMICAL ENGINEERING JOURNAL 312(2017):1-9.