DICP OpenIR
A modeling study on reaction and diffusion in MTO process over SAPO-34 zeolites
Gao, Mingbin1,2; Li, Hua1; Yang, Miao1; Zhou, Jibin1,2; Yuan, Xiaoshuai1,2; Tian, Peng1; Ye, Mao1; Liu, Zhongmin1
Corresponding AuthorYe, Mao(maoye@dicp.ac.cn)
KeywordMTO Reaction-diffusion model Dual-cycle mechanism SAPO-34
Source PublicationCHEMICAL ENGINEERING JOURNAL
2019-12-01
ISSN1385-8947
DOI10.1016/j.cej.2018.08.054
Volume377Pages:12
Funding ProjectNational Key Research and Development Program of China[2018YFB0604904]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS Research AreaEngineering
WOS KeywordTO-OLEFIN CONVERSION ; METHANOL CONVERSION ; LIGHT OLEFINS ; COKE DEPOSITION ; DEACTIVATION ; SIZE ; HYDROCARBONS ; SELECTIVITY ; CATALYST ; NANOCRYSTALS
AbstractIn this work, a modeling approach based on the dual-cycle mechanism and Maxwell-Stefan diffusion theory is developed to investigate the reaction and diffusion in methanol-to-olefins (MTO) process over SAPO-34 zeolites. In this work, the effect of coke formation on diffusion and adsorption in SAPO-34 zeolites were taken into consideration. The diffusivities and adsorption isotherms of the molecules of reactant and main product were derived by experimental measurements of the uptake rate of guest molecules. This model was used to study MTO reaction over SAPO-34 zeolites with different crystal size. It is shown that the model can capture the main features of MTO reaction as obtained by experiments, for instance, the different roles of the olefins-base cycle and aromatic-base cycle at different stage of the reaction. This model can predict the evolution of activated coke and non-activated coke during the reaction process. In particular, the simulation results directly show that the formation of non-activated coke can cause the pore blocking inside SAPO-34 zeolites and constrain the diffusion of different guest molecules to various extend. This is essential for us to understand the effect diffusion on catalyst lifetime and product selectivity in MTO reaction over SAPO-34 zeolites.
Language英语
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS IDWOS:000489122300021
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/172342
Collection中国科学院大连化学物理研究所
Corresponding AuthorYe, Mao
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab MTO, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
Recommended Citation
GB/T 7714
Gao, Mingbin,Li, Hua,Yang, Miao,et al. A modeling study on reaction and diffusion in MTO process over SAPO-34 zeolites[J]. CHEMICAL ENGINEERING JOURNAL,2019,377:12.
APA Gao, Mingbin.,Li, Hua.,Yang, Miao.,Zhou, Jibin.,Yuan, Xiaoshuai.,...&Liu, Zhongmin.(2019).A modeling study on reaction and diffusion in MTO process over SAPO-34 zeolites.CHEMICAL ENGINEERING JOURNAL,377,12.
MLA Gao, Mingbin,et al."A modeling study on reaction and diffusion in MTO process over SAPO-34 zeolites".CHEMICAL ENGINEERING JOURNAL 377(2019):12.
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