Experimental study of hydrogen production via the steam reforming of hydrogen-rich biomass pyrolysis gas under the catalysis of Ni/γ-Al2O3

被引：0
|
作者：
Wang T.-P. [1 ]
Hu S.-H. [1 ]
Liu J. [1 ,2 ]
Hu B. [1 ]
Sun H.-D. [1 ]
Zhang Z.-X. [1 ]
Lu Q. [1 ]
机构：
[1] National Engineering Research Center of New Energy Power Generation, North China Electric Power University, Beijing
[2] Suzhou Institute of North China Electric Power University, Suzhou
来源：
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2023年 / 51卷 / 11期
基金：
中国国家自然科学基金;
关键词：
biomass pyrolysis gas; hydrogen; Ni/γ-Al[!sub]2[!/sub]O[!sub]3[!/sub; steam reforming;
D O I：
10.19906/j.cnki.JFCT.2023046
中图分类号：
学科分类号：
摘要：
In this paper, the steam reforming reactions of the hydrogen-rich biomass pyrolysis gas and methane (CH4) were compared. The influence mechanism of hydrogen-rich biomass pyrolysis gas components on the reforming reaction of CH4 and other low hydrocarbons was discussed, and the catalytic effect of Ni/γ-Al2O3 catalyst was revealed. H2 could provide a reductive atmosphere to maintain the dynamic balance of the highly active Ni0 on the catalyst surface, so as to improve its catalytic activity. At the same time, biomass pyrolysis gas could inhibit the conversion of transition carbon to graphitic carbon, reducing the influence of carbon deposition on the catalytic activity of Ni/γ-Al2O3. In addition, the influence of operating conditions such as reaction temperature, the ratio of steam and carbon (S/C), as well as space velocity on the steam reforming reaction of hydrogen-rich pyrolysis gas was investigated. The increase of reaction temperature and S/C ratio effectively promoted the steam reforming of CH4 and inhibited the production of carbon deposition. With the increase of space velocity, the competitiveness of CH4 steam reforming reaction was weakened, whereas that of water gas shift reaction and CH4 dry reforming was increased. Hence, the transformation of CH4 was inhibited. This paper cound lay a foundation for the research on the mechanism of biomass pyrolysis gas steam reforming reaction and the development of high-efficiency catalysts. © 2023 Science Press. All rights reserved.
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页码：1691 / 1700
页数：9
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