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Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts
Zhang, Ringxin1; Raja, Duaa1; Zhang, Yong2; Yan, Ying2; Garforth, Arthur A.1; Jiao, Yilai3; Fan, Xiaolei1
Corresponding AuthorJiao, Yilai(yljiao@imr.ac.cn) ; Fan, Xiaolei(Xiaolei.fan@manchester.ac.uk)
2020-05-10
Source PublicationTOPICS IN CATALYSIS
ISSN1022-5528
Pages11
AbstractA 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.
KeywordZeolite Y Mesoporous zeolites Post-synthetic treatment Microwave Carboxylic acid Condensation reaction
Funding OrganizationEuropean Union's Horizon 2020 research and innovation programme ; China Scholarship Council (CSC)
DOI10.1007/s11244-020-01268-1
Indexed BySCI
Language英语
Funding ProjectEuropean Union's Horizon 2020 research and innovation programme[872102] ; China Scholarship Council (CSC)[201604910181]
WOS Research AreaChemistry
WOS SubjectChemistry, Applied ; Chemistry, Physical
WOS IDWOS:000531215700001
PublisherSPRINGER/PLENUM PUBLISHERS
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138844
Collection中国科学院金属研究所
Corresponding AuthorJiao, Yilai; Fan, Xiaolei
Affiliation1.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
Recommended Citation
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.
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