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Promotional effect of Al addition on the Co/ZrO2 catalyst for dry reforming of CH4
Applied Catalysis A: General ( IF 5.5 ) Pub Date : 2018-05-30 , DOI: 10.1016/j.apcata.2018.05.036
Jung-Hyun Park , Suyeon Yeo , Iljeong HeO , Tae-Sun Chang

The dry reforming of methane (DRM) was performed on the Al-promoted CoAl(x)/ZrO2 catalysts (x = 0 − 2 wt.%). The addition of a small amount of Al led to an apparent promotional effect on the catalytic activity and stability of the Co-based catalyst. The largest promotional effect was observed for the Co/ZrO2 catalyst with 1 wt.% of Al loading. Although the Co/ZrO2 catalyst exhibited considerable catalytic activity, it was rapidly deactivated during the DRM, while the Al-promoted catalysts exhibited a stable catalytic activity. The addition of appropriate amount of Al species might be caused the strong interaction with the cobalt species at either the ZrO2 surface or near the interfacial region. Thus, the Al promoter led to the enhancement of the catalytic performance of Co/ZrO2 catalyst system by acting as a structural stabilizer.



中文翻译:

Al的添加对Co / ZrO 2催化剂进行CH 4干重整的促进作用

在Al促进的CoAl(x)/ ZrO 2催化剂(x = 0-2 wt。%)上进行甲烷(DRM)的干重整。少量Al的添加对Co基催化剂的催化活性和稳定性产生明显的促进作用。对于Al负载量为1重量%的Co / ZrO 2催化剂,观察到最大的促进作用。尽管Co / ZrO 2催化剂表现出相当大的催化活性,但它在DRM过程中迅速失活,而铝促进的催化剂则表现出稳定的催化活性。在ZrO 2处添加适量的Al可能会引起与钴的强烈相互作用。表面或界面附近。因此,Al助催化剂通过充当结构稳定剂而导致Co / ZrO 2催化剂体系的催化性能的增强。

更新日期:2018-05-30
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