Methanol to propylene reaction performance and trapped carbonaceous species over zeolites with different topologies

ZHANG Yun-peng; LI Ming-gang; XING En-hui; LUO Yi-bin; SHU Xing-tian

Volume 46 Issue 9

Sep. 2018

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ZHANG Yun-peng, LI Ming-gang, XING En-hui, LUO Yi-bin, SHU Xing-tian. Methanol to propylene reaction performance and trapped carbonaceous species over zeolites with different topologies[J]. Journal of Fuel Chemistry and Technology, 2018, 46(9): 1101-1112.

Citation:

ZHANG Yun-peng, LI Ming-gang, XING En-hui, LUO Yi-bin, SHU Xing-tian. Methanol to propylene reaction performance and trapped carbonaceous species over zeolites with different topologies[J]. Journal of Fuel Chemistry and Technology, 2018, 46(9): 1101-1112.

Citation:

ZHANG Yun-peng, LI Ming-gang, XING En-hui, LUO Yi-bin, SHU Xing-tian. Methanol to propylene reaction performance and trapped carbonaceous species over zeolites with different topologies[J]. Journal of Fuel Chemistry and Technology, 2018, 46(9): 1101-1112.

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Methanol to propylene reaction performance and trapped carbonaceous species over zeolites with different topologies

Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China

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Corresponding author: LUO Yi-bin, E-mail: luoyibin.ripp@sinopec.com
Received Date: 2018-05-08
Rev Recd Date: 2018-07-07

Available Online: 2021-01-23

Publish Date: 2018-09-10

Abstract

Abstract

Mesoporous ZSM-5 (MFI), MCM-22 (MWW), ZSM-22 (TON) and SSZ-13 (CHA) zeolites were obtained by TEAOH and NaOH solution treatment. Under the following operating conditions:t=480℃, p=0.1 MPa, m(methanol):m(H₂O)=1:1 and WHSV (methanol)=1.5 h^-1, the catalytic properties of four mesoporous zeolites with different topologies were investigated in the methanol to propylene (MTP) reaction. The fresh and spent samples after 2 h were characterized with XRD, nitrogen adsorption experiments, NH₃-TPD, TG, UV-Rama and GC-MS techniques. It demonstrated that both zeolites exist mesopores after treated by alkali. The mesoporous T-ZSM-5 zeolite had the highest lifetime; the lifetime of T-MCM-22 zeolite with was secondary and deactivation rate was slow; The N-ZSM-22 with one-dimensional channel structure and N-SSZ-13 zeolite with 8-member ring channels both deactivated rapidly. Due to the difference of topology structure and diffusion performance, their coke contents after 2 h increased in the order:T-ZSM-5 < N-ZSM-22 < T-MCM-22 < N-SSZ-13. Moreover, the molecular weight of soluble coke increased with the increasing of coke contents, changed from pentamethylbenzene to polycyclic aromatic hydrocarbons, such as phenanthrene and pyrene.
- methanol to propylene (MTP),
- mesoporous,
- zeolite topology,
- deactivation behavior

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References(32)

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