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

doi:10.1007/s11244-020-01268-1

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	Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts
	Zhang, Ringxin 2; Raja, Duaa 2; Zhang, Yong 3; Yan, Ying 3; Garforth, Arthur A.2; Jiao, Yilai 1; Fan, Xiaolei 2
刊名	TOPICS IN CATALYSIS
	2020-05-10
页码	11
关键词	Zeolite Y Mesoporous zeolites Post-synthetic treatment Microwave Carboxylic acid Condensation reaction
ISSN号	1022-5528
DOI	10.1007/s11244-020-01268-1
通讯作者	Jiao, Yilai(yljiao@imr.ac.cn) ; Fan, Xiaolei(Xiaolei.fan@manchester.ac.uk)
英文摘要	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.
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
语种	英语
出版者	SPRINGER/PLENUM PUBLISHERS
WOS记录号	WOS:000531215700001
资助机构	European Union's Horizon 2020 research and innovation programme ; China Scholarship Council (CSC)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138843]
专题	金属研究所_中国科学院金属研究所
通讯作者	Jiao, Yilai; Fan, Xiaolei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Manchester, Sch Engn, Dept Chem Engn & Analyt Sci, Manchester M13 9PL, Lancs, England 3.South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, 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,2020:11.
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,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 (2020):11.