Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts

doi:10.1007/s11244-020-01268-1

IMR OpenIR

	Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts
	Zhang, Ringxin 1; Raja, Duaa 1; Zhang, Yong 2; Yan, Ying 2; Garforth, Arthur A.1; Jiao, Yilai 3; Fan, Xiaolei 1
通讯作者	Jiao, Yilai(yljiao@imr.ac.cn) ; Fan, Xiaolei(Xiaolei.fan@manchester.ac.uk)
	2020-05-10
发表期刊	TOPICS IN CATALYSIS
ISSN	1022-5528
卷号	63 期号:2021-03-04 页码:11
摘要	A novel post-synthetic method combining the microwave (MW)-assisted dealumination and hydrothermal (HT) alkaline treatment for obtaining mesoporous Y zeolite catalysts is presented. In the first-step MW-assisted dealumination of the pristine Y zeolite, both the mineral acid (i.e. hydrochloric acid, HCl) and organic carboxylic acids (e.g. oxalic and diethylenetriaminepentaacetic acid) were used (all at 0.16 M), and their effects on the physical and chemical properties of the resulting modified zeolites (after the identical HT alkaline treatment using 0.2 M sodium hydroxide solution) are studied in detail by comprehensive characterisation of the bulk silicon-to-aluminium (SAR) ratio, crystallinity and textural properties. The findings show that, in the developed sequential method, (i) HCl was only effective to achieve the hydrolysis of the zeolite, (ii) carboxylic acids with the function of chelation was very capable of extracting Al species and creating mesopores, and (iii) the mesopores formation is a function of the number of coordination sites in the carboxylic acid. The hierarchical feature of the mesopores in the modified zeolites (using carboxylic acids) was probed by the model reaction of aldol condensation of 1-heptanal with benzaldehyde for the selective formation of jasminaldehyde. The normalised selectivity to jasminaldehyde (with respect to the strong acidity) was proportionally related to the specific mesopores volume of the zeolites, revealing hierarchical porous networks in the relevant modified Y zeolites and indicating the effect of hierarchical mesopores in the zeolites on their catalytic performance.
关键词	Zeolite Y Mesoporous zeolites Post-synthetic treatment Microwave Carboxylic acid Condensation reaction
资助者	European Union's Horizon 2020 research and innovation programme ; China Scholarship Council (CSC)
DOI	10.1007/s11244-020-01268-1
收录类别	SCI
语种	英语
资助项目	European Union's Horizon 2020 research and innovation programme[872102] ; China Scholarship Council (CSC)[201604910181]
WOS研究方向	Chemistry
WOS类目	Chemistry, Applied ; Chemistry, Physical
WOS记录号	WOS:000531215700001
出版者	SPRINGER/PLENUM PUBLISHERS
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/138847
专题	中国科学院金属研究所
通讯作者	Jiao, Yilai; Fan, Xiaolei
作者单位	1.Univ Manchester, Sch Engn, Dept Chem Engn & Analyt Sci, Manchester M13 9PL, Lancs, England 2.South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ringxin,Raja, Duaa,Zhang, Yong,et al. Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts[J]. TOPICS IN CATALYSIS,2020,63(2021-03-04):11.
APA	Zhang, Ringxin.,Raja, Duaa.,Zhang, Yong.,Yan, Ying.,Garforth, Arthur A..,...&Fan, Xiaolei.(2020).Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts.TOPICS IN CATALYSIS,63(2021-03-04),11.
MLA	Zhang, Ringxin,et al."Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts".TOPICS IN CATALYSIS 63.2021-03-04(2020):11.