Experimental study on sulfur deactivation and regeneration of ni-based catalyst in dry reforming of biogas

Rei Yu Chein, Yen Chung Chen, Wei Hsin Chen

研究成果: Article同行評審

摘要

The dry reforming of methane (DRM) using biogas and a Ni-based catalyst for syngas production was studied experimentally in this study under the presence of H2S. Using the nonpoi-soned DRM performance as a comparison basis, it was found that the catalyst deactivation by the sulfur chemisorption onto the catalyst surface depends on both reaction temperature and time. With low reaction temperatures, a complete sulfur coverage was resulted and could not be regenerated. With higher reaction temperatures, the H2S coverage decreased, and the poisoned catalysts could be regenerated. The experimental results also indicated that a catalyst deactivation could not be avoided by using the bi-reforming of methane by adding O2 or H2O simultaneously in the reactant due to the stronger chemisorption capability of sulfur. The catalyst could only be regenerated after it was poisoned. The experimental results indicated that the high-temperature oxidation process was the most effective process for regenerating the poisoned catalyst.

原文English
文章編號777
期刊Catalysts
11
發行號7
DOIs
出版狀態Published - 2021 七月

All Science Journal Classification (ASJC) codes

  • 催化
  • 物理與理論化學

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