Effect of Preparation Method of CeCh Support on CO Methanation Performance of Ni/CeO_2 catalyst

摘要

Along with the fast development of the society and economy, natural gas is becoming an important role in clean energy strategy. Synthetic natural gas (SNG) from coal is one of the important ways to solve the shortage of natural gas in China. CO methanation catalysts are easy to accumulate carbon, which is the key issues that restrict the development of SNG technology. The effect of preparation methods on morphologies and structure of CeO_2 were studied to explore CeO_2 support structure effect on Ni/CeO_2. CeO_2 were prepared by hydrothennal method, microwave method and homogeneous method, and the preparation conditions of the catalyst were optimized. Ni/CeO_2 catalysts were prepared by ammonia evaporation method. The catalysts and supports were characterized by SEM, XRD, H_2-TPR and so on. The effect of the morphology and structure of CeO_2 on CO methanation over Ni/CeO_2 was investigated in a fixed bed reactor.