Partial Regeneration of the Spent SAPO-34 Catalyst in the Methanol-to-Olefins Process via Steam Gasification

doi:10.1021/acs.iecr.8b04181

	Partial Regeneration of the Spent SAPO-34 Catalyst in the Methanol-to-Olefins Process via Steam Gasification
	Ye, Mao 1; Liu, Zhongmin 1; Zhou, Jibin 1,2; Zhang, Jinling 1; Zhi, Yuchun 1; Zhao, Jianping 1,2; Zhang, Tao 1
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2018-12-26
卷号	57 期号:51 页码:17338-17347
ISSN号	0888-5885
DOI	10.1021/acs.iecr.8b04181
通讯作者	Ye, Mao(maoye@dicp.ac.cn)
英文摘要	The methanol-to-olefins (MTO) reaction over the SAPO-34 catalyst suffers rapid deactivation due to coke deposition. Here, partial regeneration methods with air combustion and steam gasification were investigated. The results showed that both methods could not only reactivate the spent SAPO-34 catalyst but also prompt ethylene selectivity. Whereas, steam gasification was more effective , by which the initial ethylene selectivity could reach 53%, much higher than that of 23% over fresh SAPO-34 catalyst. Several characterizations, e.g., Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry, indicated that methylated benzenes, which were active hydrocarbon pool species and prompted ethylene selectivity, presented as the main species of residual coke in the SAPO-34 catalyst regenerated via steam gasification. Meanwhile, oxygenated compounds and naphthalene, which could accelerate catalyst deactivation, were observed in the SAPO-34 catalyst partially regenerated via air combustion. This finding improved our understanding of the role of residual coke in the MTO reaction and provided a potential regeneration method for the industrial MTO process.
资助项目	National Natural Science Foundation of China[91334205] ; National Natural Science Foundation of China[21703239]
WOS关键词	COKE DEPOSITION ; MTO REACTION ; N-HEPTANE ; CONVERSION ; DEACTIVATION ; SELECTIVITY ; ZEOLITES ; DIFFUSION ; OXIDATION ; CRACKING
WOS研究方向	Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000454751200002
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/321008/166344]
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	Ye, Mao
作者单位	1.Chinese Acad Sci, Collaborat Innovat Ctr Chem Energy Mat, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins,Dalian Natl Lab Cl, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ye, Mao,Liu, Zhongmin,Zhou, Jibin,et al. Partial Regeneration of the Spent SAPO-34 Catalyst in the Methanol-to-Olefins Process via Steam Gasification[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2018,57(51):17338-17347.
APA	Ye, Mao.,Liu, Zhongmin.,Zhou, Jibin.,Zhang, Jinling.,Zhi, Yuchun.,...&Zhang, Tao.(2018).Partial Regeneration of the Spent SAPO-34 Catalyst in the Methanol-to-Olefins Process via Steam Gasification.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,57(51),17338-17347.
MLA	Ye, Mao,et al."Partial Regeneration of the Spent SAPO-34 Catalyst in the Methanol-to-Olefins Process via Steam Gasification".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 57.51(2018):17338-17347.