Seed-assisted grinding synthesis of SAPO-34 catalyst and its prolonged catalytic lifetime in the conversion of methanol to olefins

doi:10.1007/s11144-019-01655-0

IR > 石油化工学院

	Seed-assisted grinding synthesis of SAPO-34 catalyst and its prolonged catalytic lifetime in the conversion of methanol to olefins
	Lu, Huihui; Duan, Weiting; Zhao, Xinhong
	2019-12
发表期刊	REACTION KINETICS MECHANISMS AND CATALYSIS
ISSN	1878-5190
卷号	128 期号:2 页码:1029-1042
摘要	A cost-effective route has been developed for the synthesis of nano-sized triclinic SAPO-34 zeolite via seed-assisted grinding method using lower dosage of morpholine as the sole template. The synthesis conditions including silica source, silica concentration, crystallization temperature and time were refined to obtain SAPO-34 zeolite with high phase purity and crystallinity. Particularly, seed crystals preactivated by different methods were utilized to induce the synthesis of nano-sized SAPO-34 zeolites in the subsequent study. The resultant SAPO-34 samples were characterized by XRD, SEM, N-2 physisorption and NH3-TPD techniques. It was found that the introduction of seed crystals activated by mechanical milling for 20 min and chemical etching with 0.0001 M and 0.01 M H3PO4 can not only effectively reduce the crystal size of SAPO-34 zeolites from 3-4 mu m to 500-800 nm level, but also can modify their texture and acid properties. This nano-sized SAPO-34 catalyst exhibits a remarkably prolonged catalytic lifetime in methanol to olefins (MTO) reaction in comparison to the conventional micron-sized counterpart. Analogous to solvent-free synthesis of zeolites, this seed-assisted grinding synthesis method is simpler, more efficient than conventional hydrothermal synthesis. More importantly, this method provides a new avenue for preparing superior MTO catalyst.
关键词	Zeolite synthesis Activated seeds Triclinic SAPO-34 Methanol to olefins reaction
DOI	10.1007/s11144-019-01655-0
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000496310300027
出版者	SPRINGER
EI入藏号	20193307324378
EI主题词	Hydrothermal synthesis
EI分类号	531 Metallurgy and Metallography - 604.2 Machining Operations - 802.2 Chemical Reactions - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 911.2 Industrial Economics - 933.1 Crystalline Solids
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/64266
专题	石油化工学院
通讯作者	Zhao, Xinhong
作者单位	Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Lu, Huihui,Duan, Weiting,Zhao, Xinhong. Seed-assisted grinding synthesis of SAPO-34 catalyst and its prolonged catalytic lifetime in the conversion of methanol to olefins[J]. REACTION KINETICS MECHANISMS AND CATALYSIS,2019,128(2):1029-1042.
APA	Lu, Huihui,Duan, Weiting,&Zhao, Xinhong.(2019).Seed-assisted grinding synthesis of SAPO-34 catalyst and its prolonged catalytic lifetime in the conversion of methanol to olefins.REACTION KINETICS MECHANISMS AND CATALYSIS,128(2),1029-1042.
MLA	Lu, Huihui,et al."Seed-assisted grinding synthesis of SAPO-34 catalyst and its prolonged catalytic lifetime in the conversion of methanol to olefins".REACTION KINETICS MECHANISMS AND CATALYSIS 128.2(2019):1029-1042.