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

doi:10.1007/s11705-019-1905-1

IMR OpenIR

	Using ultrasound to improve the sequential post-synthesis modification method for making mesoporous Y zeolites
	Zhang, Rongxin 1; Zhong, Peinan 1; Arandiyan, Hamidreza 2; Guan, Yanan 3; Liu, Jinmin 3; Wang, Na 4,5,6; Jiao, Yilai 3; Fan, Xiaolei 1
通讯作者	Wang, Na(iamwangna@syuct.edu.cn) ; Jiao, Yilai(yljiao@imr.ac.cn) ; Fan, Xiaolei(xiaolei.fan@manchester.ac.uk)
	2020-02-21
发表期刊	FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
ISSN	2095-0179
卷号	14 期号:2 页码:13
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.
关键词	zeolite Y mesoporous zeolite post-synthesis treatment ultrasound chemical dealumination treatment alkaline desilication treatment
资助者	China Scholarship Council ; National Natural Science Foundation of China
DOI	10.1007/s11705-019-1905-1
收录类别	SCI
语种	英语
资助项目	China Scholarship Council[201604910181] ; National Natural Science Foundation of China[51973124]
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000516350100002
出版者	SPRINGER
引用统计	被引频次：26[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/321006/137334
专题	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 Manchester, Sch Engn, Dept Chem Engn & Analyt Sci, Manchester M13 9PL, Lancs, England 2.Univ Sydney, Sch Chem, Lab Adv Catalysis Sustainabil, Sydney, NSW 2006, Australia 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 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.