Manganese cluster induce the control synthesis of RHO- and CHA-type silicoaluminaphosphates for dimethylether to light olefin conversion

doi:10.1016/j.fuel.2019.02.013

	Manganese cluster induce the control synthesis of RHO- and CHA-type silicoaluminaphosphates for dimethylether to light olefin conversion
	Sun, Jian 3; Wang, Fei 1,2; Wen, Zhiyong 3; Qin, Zhaoxian 1; Fang, Qihua 1,2; Ge, Qingjie 3; Li, Zhimin 1; Li, Gao 1
刊名	FUEL
	2019-05-15
卷号	244 页码:104-109
关键词	Manganese clusters RHO SAPO-34 Silicoaluminaphosphates Dimethylether to light olefin
ISSN号	0016-2361
DOI	10.1016/j.fuel.2019.02.013
通讯作者	Ge, Qingjie(geqj@dicp.ac.cn) ; Li, Gao(gaoli@dicp.ac.cn)
英文摘要	RHO- and CHA-type silicoaluminaphosphates have played an essential role in the global olefin production, e.g., dimethylether to light olefin process (DTO). In this work, we report a simple synthetic protocol to selectively acquire pure RHO and SAPO-34 and RHO&SAPO-34 silicoaluminaphosphates, which is controllable mediated by the thiolate-capped manganese cluster additives. These prepared silicoaluminaphosphates are well characterized by powder X-ray diffraction (XRD), ammonia-temperature programmed desorption (NH3-TPD), and as well as N-2-physical adsorption. They are investigated in the DTO catalysis. The selectivity for the C2-4= light olefins over the RHO&SAPO-34 catalysts is up to 90.2%, which is much higher than these over the RHO (65.5%) and SAPO-34 (69.0%) silicoaluminaphosphates. Especially, the selectivity for ethylene is two times of these over RHO and SAPO-34. It is beneficial to selectively give rise to ethylene by the dual cycle hydrocarbon-pool mechanism in the DTO reactions, as the RHO&SAPO-34 showed much stronger acidic density, both in the strong acidic sites (0.966 mmol g(-1)) and weak acidic sites (0.575 mmol g(-1)), than the RHO and SAPO-34. Finally, the RHO&SAPO-34 also performs longer lifetime and durability (ca. 4.5 h) than the corresponding SAPO-34 and RHO silicoaluminaphosphates (ca. 1 h and 4 h), which is mainly due to slow formation of the carbon deposition over its strong acid density.
资助项目	National Natural Science Foundation of China[21701168]
WOS关键词	ZEOLITE-RHO ; ETHER CONVERSION ; METHANOL ; HYDROCARBONS ; DEACTIVATION ; SELECTIVITY ; CHEMISTRY
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000459434500012
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/165934]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Ge, Qingjie; Li, Gao
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Changshou Univ, Adv Catalysis & Green Mfg Collaborat Innovat Ctr, Chcmgsshou 213164, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Sun, Jian,Wang, Fei,Wen, Zhiyong,et al. Manganese cluster induce the control synthesis of RHO- and CHA-type silicoaluminaphosphates for dimethylether to light olefin conversion[J]. FUEL,2019,244:104-109.
APA	Sun, Jian.,Wang, Fei.,Wen, Zhiyong.,Qin, Zhaoxian.,Fang, Qihua.,...&Li, Gao.(2019).Manganese cluster induce the control synthesis of RHO- and CHA-type silicoaluminaphosphates for dimethylether to light olefin conversion.FUEL,244,104-109.
MLA	Sun, Jian,et al."Manganese cluster induce the control synthesis of RHO- and CHA-type silicoaluminaphosphates for dimethylether to light olefin conversion".FUEL 244(2019):104-109.