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生物质化学工程 ›› 2015, Vol. 49 ›› Issue (5): 11-16.doi: 10.3969/j.issn.1673-5854.2015.05.003

• 研究报告 • 上一篇    下一篇

La1-xPrxNiO3的制备及其对蔗渣高压液化的催化性能

张晓华1,2, 滕俊江2, 张荣斌1, 李凝2, 芦超2, 高新航2   

  1. 1. 南昌大学 化学学院, 江西 南昌 330031;
    2. 广东石油化工学院 化学工程学院, 广东 茂名 525000
  • 收稿日期:2014-05-04 出版日期:2015-09-30 发布日期:2015-10-12
  • 通讯作者: 李 凝,教授,博士,研究方向为生物质能源化工与催化;E-mail:985882939@qq.com。 E-mail:985882939@qq.com
  • 作者简介:张晓华(1990—),男,江西上饶人,硕士生,研究方向为生物质能源化工与催化
  • 基金资助:
    广东省人才引进项目(粤财教[2013]247号)

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

摘要: 采用共沉淀法制备了钙钛矿型复合氧化物催化剂La1-xPrxNiO3,用X射线衍射(XRD)、扫描电子显微镜(SEM)、程序升温还原(TPR)等对La1-xPrxNiO3的晶相结构、形貌、还原性能等进行了表征;同时考察了La1-xPrxNiO3在催化蔗渣高压液化的反应中催化活性和液化产物分布规律。结果表明,Pr3+部分取代La3+后La1-xPrxNiO3的X射线衍射峰强度增强,微观形貌结构更疏松,比表面积增大,还原峰都向高温方向迁移且还原峰面积增加,具有较好的催化活性,促进蔗渣的液化,降低残渣含量。当复配系数x=0时,残渣率为30.8%,液化油产率为41.67%;当x=1时,残渣率为24.8%,液化油产率为46.37% 。同时液化产物中大相对分子质量的产物数量减少,小相对分子质量的产物数量增多。

关键词: 钙钛矿, La1-xPrxNiO3, 生物质, 液化

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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