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bce ›› 2015, Vol. 49 ›› Issue (5): 11-16.doi: 10.3969/j.issn.1673-5854.2015.05.003

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Preparation of La1-xPrxNiO3 and Its Catalytic Properties on Bagasse High-pressure Liquefaction

ZHANG Xiao-hua1,2, TENG Jun-jiang2, ZHANG Rong-bin1, LI Ning2, LU Chao2, GAO Xin-hang2   

  1. 1. Department of Chemistry, Nanchang University, Nanchang 330031, China;
    2. School of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
  • Received:2014-05-04 Online:2015-09-30 Published:2015-10-12

Abstract: Perovskite-type oxide catalysts La1-xPrxNiO3 were synthesized by co-precipitation method, and the crystalline structures, shapes and reducing properties were characterized by XRD, SEM and TPR. At the same time, the catalytic performance of La1-xPrxNiO3 on bagasse high-pressure liquefaction reaction and liquefaction product distributions in the process were studied. The results showed that after La3+ partly replaced Pr3+, the peak strength of XRD of La1-xPrxNiO3 enhanced, the micro morphology structure was more loose, the specific surface area by increased, the reduction peak migrated to the direction of high temperature, and the reduction peak area increased. It showed better catalytic activity, promoted the liquefaction of bagasse and reduced the content of residue. When x=0, the residue rate was 30.8%, and the yield of liquefied oil was 41.67%. When x=1, the residue rate was 24.8%, and the yield of liquefied oil was 46.37%. At the same time, the product of large relative molecular mass in liquefied products decreased and the product of small relative molecular mass increased.

Key words: perovskite, La1-xPrxNiO3, biomass, liquefaction

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