| 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 Author | Jiao, Yilai(yljiao@imr.ac.cn) ; Fan, Xiaolei(Xiaolei.fan@manchester.ac.uk) |
| 2020-05-10 | |
| Source Publication | TOPICS IN CATALYSIS
 |
| ISSN | 1022-5528 |
| Pages | 11 |
| Abstract | 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. |
| Keyword | Zeolite Y Mesoporous zeolites Post-synthetic treatment Microwave Carboxylic acid Condensation reaction |
| Funding Organization | European Union's Horizon 2020 research and innovation programme ; China Scholarship Council (CSC) |
| DOI | 10.1007/s11244-020-01268-1 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | European Union's Horizon 2020 research and innovation programme[872102] ; China Scholarship Council (CSC)[201604910181] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Applied ; Chemistry, Physical |
| WOS ID | WOS:000531215700001 |
| Publisher | SPRINGER/PLENUM PUBLISHERS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138844 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiao, Yilai; Fan, Xiaolei |
| Affiliation | 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 |
| 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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