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Using ultrasound to improve the sequential post-synthesis modification method for making mesoporous Y zeolites

文献类型：期刊论文

作者Zhang, Rongxin3; Zhong, Peinan3; Arandiyan, Hamidreza1; Guan, Yanan2; Liu, Jinmin2; Wang, Na4,5,6; Jiao, Yilai2; Fan, Xiaolei3
刊名FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
出版日期2020-02-21
卷号14期号:2页码:13
关键词zeolite Y mesoporous zeolite post-synthesis treatment ultrasound chemical dealumination treatment alkaline desilication treatment
ISSN号2095-0179
DOI10.1007/s11705-019-1905-1
通讯作者Wang, Na(iamwangna@syuct.edu.cn) ; Jiao, Yilai(yljiao@imr.ac.cn) ; Fan, Xiaolei(xiaolei.fan@manchester.ac.uk)
英文摘要Mesoporous Y zeolites were prepared by the sequential chemical dealumination (using chelating agents such as ethylenediaminetetraacetic acid, H(4)EDTA, and citric acid aqueous solutions) and alkaline desilication (using sodium hydroxide, NaOH, aqueous solutions) treatments. Specifically, the ultrasound-assisted alkaline treatment (i.e., ultrasonic treatment) was proposed as the alternative to conventional alkaline treatments which are performed under hydrothermal conditions. In comparison with the hydrothermal alkaline treatment, the ultrasonic treatment showed the comparatively enhanced efficiency (with the reduced treatment time, i.e., 5 min vs. 30 min, all with 0.2 mol center dot L-1 NaOH at 65 degrees C) in treating the deal-uminated Y zeolites for creating mesoporosity. For example, after the treatment of a dealuminated zeolite Y (using 0.1 mol center dot L-1 H4EDTA at 100 degrees C for 6 h), the ultrasonic treatment produced the mesoporous zeolite Y with the specific external surface area (S-external) of 160 m(2)center dot g center dot(-1)and mesopore volume (V-meso) of 0.22 cm(3)center dot g(-1), being slightly higher than that by the conventional method (i.e., S-extemal= 128 m(2)center dot g(-1) and V-meso = 0.19 cm(3)center dot g(-1)). The acidic property and catalytic activity (in catalytic cracking of n-octane) of mesoporous Y zeolites obtained by the two methods were comparable. The ultrasonic desilication treatment was found to be generic, also being effective to treat the dealuminated Y zeolites by citric acid. Additionally, the first step of chemical dealumination treatment was crucial to enable the effective creation of mesopores in the parent Y zeolite (with a silicon-to-aluminium ratio, Si/Al = 2.6) regardless of the subsequent alkaline desilication treatment (i.e., ultrasonic or hydrothermal). Therefore, appropriate selection of the condition of the chemical dealumination treatment based on the property of parent zeolites, such as Si/Al ratio and crystallinity, is important for making mesoporous zeolites effectively.
资助项目China Scholarship Council[201604910181] ; National Natural Science Foundation of China[51973124]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000516350100002
出版者SPRINGER
资助机构China Scholarship Council ; National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/137333]  
专题金属研究所_中国科学院金属研究所
通讯作者Wang, Na; Jiao, Yilai; Fan, Xiaolei
作者单位1.Univ Sydney, Sch Chem, Lab Adv Catalysis Sustainabil, Sydney, NSW 2006, Australia
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
3.Univ Manchester, Sch Engn, Dept Chem Engn & Analyt Sci, Manchester M13 9PL, Lancs, England
4.Shenyang Univ Chem Technol, Sino Spanish Adv Mat Inst, Shenyang 110142, Liaoning, Peoples R China
5.Shenyang Univ Chem Technol, AMIPI, Shenyang 110142, Liaoning, Peoples R China
6.Shenyang Univ Chem Technol, Minist Educ, Key Lab Mat & Adv Equipment Resource Chem Technol, Shenyang 110142, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Rongxin,Zhong, Peinan,Arandiyan, Hamidreza,et al. Using ultrasound to improve the sequential post-synthesis modification method for making mesoporous Y zeolites[J]. FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING,2020,14(2):13.
APA Zhang, Rongxin.,Zhong, Peinan.,Arandiyan, Hamidreza.,Guan, Yanan.,Liu, Jinmin.,...&Fan, Xiaolei.(2020).Using ultrasound to improve the sequential post-synthesis modification method for making mesoporous Y zeolites.FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING,14(2),13.
MLA Zhang, Rongxin,et al."Using ultrasound to improve the sequential post-synthesis modification method for making mesoporous Y zeolites".FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING 14.2(2020):13.

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来源：金属研究所

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