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ZnCr基催化剂煅烧温度对异丁醇合成性能的影响

寇永利 ,  解红娟 ,  刘广波 ,  武应全 ,  张欣悦 ,  韩怡卓 ,  Noritatsu Tsubaki ,  谭猗生

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引用本文: 寇永利, 解红娟, 刘广波, 武应全, 张欣悦, 韩怡卓, Noritatsu Tsubaki, 谭猗生. ZnCr基催化剂煅烧温度对异丁醇合成性能的影响[J]. 燃料化学学报, 2013, 41(6): 703-709. shu
Citation:  KOU Yong-li, XIE Hong-juan, LIU Guang-bo, WU Ying-quan, ZHANG Xin-yue, HAN Yi-zhuo, Noritatsu Tsubaki, TAN Yi-sheng. Effect of calcination temperature on the performance of ZnCr based catalyst in isobutanol synthesis[J]. Journal of Fuel Chemistry and Technology, 2013, 41(6): 703-709. shu

ZnCr基催化剂煅烧温度对异丁醇合成性能的影响

    通讯作者: 谭猗生,Tel/Fax: 0351-4044287, E-mail: tan@sxicc.ac.cn。
  • 基金项目:

    中国科学院西山西煤炭化学研究所前瞻性布局项目(2011SQZBJ13) (2011SQZBJ13)

摘要: 研究了煅烧温度对ZnCr基催化剂合成异丁醇性能的影响。结果表明,随着煅烧温度的升高,催化剂的活性和产物分布都发生了较大的变化。催化剂在较低的温度下煅烧,液相产物中醇主要是甲醇和异丁醇;在较高的温度下煅烧,液相产物醇的分布符合A-S-F方程。用BET、XRD、H2-TPR、XPS等技术手段对催化剂织构参数、体相结构、还原性能、表面组成进行表征。结果表明,在300℃煅烧时,催化剂中的ZnO和Cr2O3未完全形成非计量尖晶石ZnxCr2/3(1-x)O;400℃煅烧时,催化剂中形成了最多量非计量尖晶石ZnxCr2/3(1-x)O;当煅烧温度高于400℃时,随着煅烧温度进一步升高,非计量尖晶石ZnxCr2/3(1-x)O逐步发生了分解,生成了更多量的ZnO和Cr2O3,导致催化剂的活性随之下降。进一步证明了非计量尖晶石ZnxCr2/3(1-x)O是该催化反应活性相。

English

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  • 收稿日期:  2012-12-12
  • 网络出版日期:  2013-02-02
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