Wu Xianyun, Xu Leilei, Chen Mindong, Lv Chufei, Wen Xueying, Cui Yan, Wu Cai-E, Yang Bo, Miao Zhichao, Hu Xun
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China.
College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, China.
Front Chem. 2020 Sep 24;8:581923. doi: 10.3389/fchem.2020.581923. eCollection 2020.
CO reforming of methane (CRM) can effectively convert two greenhouse gases (CO and CH) into syngas (CO + H). This process can achieve the efficient resource utilization of CO and CH and reduce greenhouse gases. Therefore, CRM has been considered as a significantly promising route to solve environmental problems caused by greenhouse effect. Ni-based catalysts have been widely investigated in CRM reactions due to their various advantages, such as high catalytic activity, low price, and abundant reserves. However, Ni-based catalysts usually suffer from rapid deactivation because of thermal sintering of metallic Ni active sites and surface coke deposition, which restricted the industrialization of Ni-based catalysts toward the CRM process. In order to address these challenges, scientists all around the world have devoted great efforts to investigating various influencing factors, such as the option of appropriate supports and promoters and the construction of strong metal-support interaction. Therefore, we carefully summarized recent development in the design and preparation of Ni-based catalysts with advanced catalytic activity and enhanced anti-coke performance toward CRM reactions in this review. Specifically, recent progresses of Ni-based catalysts with different supports, additives, preparation methods, and so on, have been summarized in detail. Furthermore, recent development of reaction mechanism studies over Ni-based catalysts was also covered by this review. Finally, it is prospected that the Ni-based catalyst supported by an ordered mesoporous framework and the combined reforming of methane will become the future development trend.
甲烷二氧化碳重整(CRM)能够有效地将两种温室气体(CO和CH₄)转化为合成气(CO + H₂)。该过程可实现CO和CH₄的高效资源利用并减少温室气体排放。因此,CRM被认为是解决温室效应所引发环境问题的一条极具前景的途径。镍基催化剂因其具有高催化活性、低价格以及储量丰富等诸多优点,已在CRM反应中得到广泛研究。然而,镍基催化剂通常会因金属Ni活性位点的热烧结和表面积炭而迅速失活,这限制了镍基催化剂在CRM过程中的工业化应用。为应对这些挑战,世界各地的科学家们致力于研究各种影响因素,如选择合适的载体和助剂以及构建强金属-载体相互作用。因此,在本综述中,我们仔细总结了近期在设计和制备具有先进催化活性以及增强的抗积炭性能的镍基催化剂用于CRM反应方面的进展。具体而言,详细总结了不同载体、添加剂、制备方法等的镍基催化剂的近期进展。此外,本综述还涵盖了镍基催化剂反应机理研究的近期进展。最后,展望了有序介孔骨架负载的镍基催化剂和甲烷联合重整将成为未来的发展趋势。