CH4 Dry Reforming on Alumina-Supported Nickel Catalyst

Bulletin of the Korean chemical society

Oh-Shim Joo¹  Kwang-Deog Jung¹ 

关键词: Methane;    Carbon dioxide;    Dry reforming;    Nickel aluminate;    Carbon deposition;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

CH₄/CO₂ dry reforming was carried out to make syn gas on the Ni/Al₂O₃ catalysts calcined at different temperatures. The Ni/Al₂O₃ (850 �?) catalyst gave good activity and stability whereas the Ni/Al₂O₃ (450�?) catalyst showed lower activity and stability. The NiO/Al₂O₃ catalyst calcined at 850�? for 16 h (Ni/Al₂O₃ (850�?)) formed the spinel structure of nickel aluminate, which was confirmed by TPR. The carbon formation rate on the Ni/Al₂O₃ (850�?) catalyst was very low till 20 h, and then steeply increased with reaction time without decreasing the activity for CH₄ reforming. The Ni/Al₂O₃ (450�?) catalyst showed high carbon formation rate at the initial reaction time and then, the rate nearly stopped with continuous decreasing the activity for CH₄ reforming. Even though the amount of carbon deposition on the Ni/Al₂O₃ (850�?) catalyst was higher than that on the Ni/Al₂O₃ (450�?) catalyst, the activity for CH₄ing was also high, which could be attributed to the different type of the carbon formed on the catalyst surface.

【 授权许可】

Unknown