Stabilizing the framework of SAPO-34 zeolite toward long-term methanol-to-olefins conversion

Liu Yang, Chang Wang, Lina Zhang, Weili Dai (), Yueying Chu, Jun Xu, Guangjun Wu, Mingbin Gao, Wenjuan Liu, Zhaochao Xu, Pengfei Wang, Naijia Guan, Michael Dyballa, Mao Ye, Feng Deng, Weibin Fan and Landong Li
Additional contact information
Liu Yang: Nankai University
Chang Wang: Nankai University
Lina Zhang: Nankai University
Weili Dai: Nankai University
Yueying Chu: Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
Jun Xu: Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
Guangjun Wu: Nankai University
Mingbin Gao: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Wenjuan Liu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Zhaochao Xu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Pengfei Wang: Institute of Coal Chemistry, Chinese Academy of Sciences
Naijia Guan: Nankai University
Michael Dyballa: Institute of Chemical Technology, University of Stuttgart
Mao Ye: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Feng Deng: Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
Weibin Fan: Institute of Coal Chemistry, Chinese Academy of Sciences
Landong Li: Nankai University

Nature Communications, 2021, vol. 12, issue 1, 1-11

Abstract: Abstract As a commercial MTO catalyst, SAPO-34 zeolite exhibits excellent recyclability probably due to its intrinsic good hydrothermal stability. However, the structural dynamic changes of SAPO-34 catalyst induced by hydrocarbon pool (HP) species and the water formed during the MTO conversion as well as its long-term stability after continuous regenerations are rarely investigated and poorly understood. Herein, the dynamic changes of SAPO-34 framework during the MTO conversion were identified by 1D 27Al, 31P MAS NMR, and 2D 31P-27Al HETCOR NMR spectroscopy. The breakage of T-O-T bonds in SAPO-34 catalyst during long-term continuous regenerations in the MTO conversion could be efficiently suppressed by pre-coking. The combination of catalyst pre-coking and water co-feeding is established to be an efficient strategy to promote the catalytic efficiency and long-term stability of SAPO-34 catalysts in the commercial MTO processes, also sheds light on the development of other high stable zeolite catalyst in the commercial catalysis.

Date: 2021
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-021-24403-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24403-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-24403-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().