The surface of basic sites in catalysts plays an important role in many catalytic applications, such as dry reforming of methane for generating renewable hydrogen energy. The reaction concept of methane dry reforming is initiated by an acid–base interaction, followed by catalytic cycles. For instance, the reactants of CO₂ act as acids toward catalysts, which act as bases. The basic sites of catalysts are generated from a severe pre-treatment temperature by desorbing the surface species. The current consensus on the role of basic sites is to enhance the activation of acidic CO₂ on the catalyst support's surface and to inhibit carbon deposition on the catalyst, thus enhancing the catalytic stability. This review elucidated the behaviour of surface basic sites towards CO₂ activation in dry reforming of methane. The method for characterising the basicity of catalysts was also reviewed to strategically design catalysts, which could increase the catalytic activity.

中文翻译：

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了解甲烷干重整中催化剂表面碱性位点在CO2活化中的作用：简短回顾

催化剂中碱性位点的表面在许多催化应用中起着重要作用，例如甲烷的干重整以产生可再生的氢能。甲烷干重整的反应概念是由酸碱相互作用引发的，然后是催化循环。例如，CO ₂的反应物对作为碱的催化剂起酸的作用。催化剂的碱性位点是通过严格的预处理温度使表面物质解吸而产生的。关于碱性位点的作用的当前共识是增强酸性CO ₂在催化剂载体表面上的活化并抑制碳在催化剂上的沉积，从而增强催化稳定性。这篇评论阐明了表面碱性位点对CO ₂的行为甲烷干重整中的活化。综述了表征催化剂碱度的方法，从战略上设计了可以提高催化活性的催化剂。