文章基本信息

标题：Effect of K+ on the performance of Ni/Al2O3 high temperature methanation catalyst
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作者：Dong Peng ; Bing Wei ; Zhenguo Zhang 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：2
页码：1-7
DOI：10.1088/1755-1315/252/2/022069
出版社：IOP Publishing
摘要：The effects of potassium ions on the properties of co-precipitation Ni/Al₂O₃ high temperature methanation catalysts were investigated. The catalysts were characterized by low temperature nitrogen adsorption (BET), X-ray diffraction (XRD), and hydrogen programmed reduction (H₂-TPR). Activity tests showed that the activity of the catalyst decreased with increasing of potassium ions, but the anti-carbon capacity of the catalyst increased first and then decreased. The activity deactibation is due to the decrease of specific surface aera measured by BET. On this basis, the effect of kaliophilite on the performance of Ni/Al₂O₃ methanation catalyst was investigated. The results showed that the addition of kaliophilite had little effect on the specific surface area and activity of the catalyst, but could significantly improve the anti-carbon capacity of the catalyst.