Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (1): 15-20.doi: 10.1007/s40242-024-4194-2

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Co-loading Pd and CeO2 on Silicalite-1 as High-performance Catalyst for Methane Dry Reforming Reaction

XU Jing1,2, ZHANG Rui1,2, WANG Ke1,2, WANG Xiao1,2, SONG Shuyan1,2, ZHANG Hongjie1,2,3   

  1. 1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China;
    2. School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China;
    3. Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
  • Received:2024-09-21 Online:2025-02-01 Published:2025-01-18
  • Contact: WANG Xiao,wangxiao@ciac.ac.cn;SONG Shuyan,songsy@ciac.ac.cn;ZHANG Hongjie,hongjie@ciac.ac.cn E-mail:wangxiao@ciac.ac.cn;songsy@ciac.ac.cn;hongjie@ciac.ac.cn
  • Supported by:
    This work was supported by the National Science and Technology Major Project of China (No. 2021YFB3500700), the National Natural Science Foundation of China (Nos. 22020102003, 22025506, 22271274 and U23A20140), and the Science and Technology Development Plan Project of Jilin Province, China (No. 20240402056GH).

Abstract: The methane dry reforming (DRM) reaction can convert CO2 and CH4, both of which contribute to climate change, into syngas, which holds great significance in mitigating specific environmental issues stemming from the greenhouse effect. Nonetheless, the challenges that persist include the substantial energy consumption and the catalyst's susceptibility to deactivation, both of which necessitate solutions. Herein, we developed a catalyst, PdCe/S1, featuring small-sized Pd species and CeO2 stabilized on pure silicon zeolite (silicalite-1), which is employed in the DRM reaction. It can achieve 97% CH4 conversion and 98% CO2 conversion at 750 °C, surpassing binary Pd/CeO2 and Pd/S1 catalysts. The small size of CeO2 stabilized by silicalite-1 promotes oxygen defects formation and enhances the CO2 adsorption capacity. The introduction of silicalite-1 further enhances the interaction between Pd and CeO2, boosting DRM performance.

Key words: Dry reforming of methane, CeO2, Zeolite