JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 35 Issue 1
January 2020
Article Contents
GU Jianfeng, ZANG Yunhao and GAO Feng. Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation[J]. Journal of Light Industry, 2020, 35(1): 35-46,71. doi: 10.12187/2020.01.005
Citation: GU Jianfeng, ZANG Yunhao and GAO Feng. Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation[J]. Journal of Light Industry, 2020, 35(1): 35-46,71. doi: 10.12187/2020.01.005 shu

Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation

  • Received Date: 2019-12-03
  • Using columnar silica gel and boric acid as the main raw materials, five types of heteroatom molecular sieves, NaB-Beta, NaB-ZSM-5, Si-Beta, HB-Beta and HB-ZSM-5 were synthesized by hydrothermal method. As a carrier, a series of propane dehydrogenation catalyst samples were prepared by impregnating VOx, and their propane dehydrogenation catalytic performance and structure were analyzed and characterized. The results showed that the sample (8VOx/HB-Beta) prepared with HB-Beta molecular sieve as the carrier and 8% (mass fraction) of VOx had the best catalytic activity for propane dehydrogenation. The reaction was carried out at 600℃for 30 min,the conversion rate was 43%, the propylene selectivity was 78%, and the propylene yield was 34%. HB-Beta molecular sieve was more conducive to the dispersion of vanadium oxide VOx, and then monodispersed vanadium oxide VOx was formed.These highly dispersed vanadium species and a certain amount of acid on the carrier were the key factors for the high activity of this type of propane dehydrogenation catalyst.
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