Effect of boron on ZSM-5 catalyst for methanol to propylene conversion

• Authors: Aina Xu , Hongfang Ma , Haitao Zhang , Dingye Weiyong , Dingye Fang
• Languages of publication: EN

Abstracts

EN

B-ZSM-5 catalysts were prepared by various modification methods with boric acid, including ion-exchange, impregnation and direct synthesis. The catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), NH3-Temperature Programmed Desorption (NH3-TPD), N2 adsorption-desorption, Fourier Transform Infrared spectrometry (FT-IR), 27Al and 11B MAS NMR spectra. The results revealed that the weak acidity of catalysts was significantly increased by modification. The catalytic activity was measured in a fixed bed at 460°C for methanol to propylene (MTP) reaction. The results of MTP reaction showed a great increment of the propylene selectivity for the boron modified samples, especially for the directly synthesized B-ZSM-5 which also displayed high activity and selectivity towards C2 =-C4 = olefins. It was found that the remarkable selectivity strongly depended on the intensity of weak acidity.

Keywords

EN

methanol to propylene; ZSM-5; boron modifi cation; propylene

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2013
• Volume: 15
• Issue: 4
• Pages: 95-101

Dates

published

1 - 12 - 2013

online

31 - 12 - 2013

Contributors

author

Aina Xu

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Hongfang Ma

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Haitao Zhang

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Dingye Weiyong

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Dingye Fang

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

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Identifiers

DOI

10.2478/pjct-2013-0075