Ni-WO<sub>3</sub>/SBA-15催化剂上纤维素的水解加氢

曹月领; 王军威; 李其峰; 殷宁; 刘振民; 亢茂青; 朱玉雷

Ni-WO₃/SBA-15催化剂上纤维素的水解加氢

1.
中国科学院山西煤炭化学研究所, 山西太原 030001;
2.
中国科学院大学, 北京 100049

基金项目: 国家重点基础研究发展规划(973计划, 2012CB215305).

详细信息

通讯作者:
王军威

中图分类号: O643.38
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出版历程
- 收稿日期: 2013-04-13
- 修回日期: 2013-06-21
- 刊出日期: 2013-08-30

Hydrolytic hydrogenation of cellulose over Ni-WO₃/SBA-15 catalysts

1.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 采用等体积浸渍法制备了Ni-WO₃/SBA-15催化剂,将其应用于纤维素的水相氢解.考察了温度对纤维素水解和其形貌的影响及Ni、WO₃含量等对纤维素转化行为的影响.XRD表征结果表明,随着温度的升高纤维素颗粒粒径逐渐变小并趋于均一,结晶状态逐渐由晶型变为无定型态.H₂-TPR结果表明,Ni和WO₃间存在较强的相互作用,这种相互作用提高了W物种对C-C键的解离性能,同时,提高了Ni物种的加氢活性,促进了纤维素向乙二醇的转化.在3%Ni-15%WO₃/SBA-15催化剂上,反应条件为230 ℃、6.0 MPa、6.0 h时,纤维素完全转化,乙二醇的产率达到70.7%.
- 纤维素 /
- Ni-WO₃/SBA-15 /
- 氢解 /
- 乙二醇
Abstract: Series of non-precious metal catalysts Ni-WO₃/SBA-15 were prepared by means of incipient impregnation and applied to the hydrogenalysis of cellulose in aqueous solution. The effect of reaction temperature on the hydrolysis and morphology of cellulose, and the influence of Ni, WO₃ loading on the conversion of cellulose were investigated. High crystalline cellulose was transformed gradually into amorphous state with the increase of reaction temperature. H₂ temperature program reduction of the catalyst proved that a strong interaction existed between nickel and tungsten trioxide, which enhanced the ability of tungsten species to the cleavage of C-C bond and the activity of hydrogenation of nickel. Thus, the transformation of cellulose into ethylene glycol was strengthened markedly. The complete conversion of cellulose and 70.7% ethylene glycol yield were obtained over a 3%Ni-15%WO₃/SBA-15 catalyst under the reaction condition of 230 ℃and 6.0 MPa H₂ for 6.0 h.
- cellulose /
- Ni-WO₃/SBA-15 /
- hydrogenolysis /
- ethylene glycol

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参考文献(23)

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