This study is to load the sing-atom Pd on Cu/ZrO₂ with ion exchange method, and the role of Pd in Cu/ZrO₂ for CO₂ hydrogenation to methanol is investigated. The exchange of Pd with Cu/ZrO₂ increase the methanol production rate from 223 μmol g⁻¹ h⁻¹ to 512 μmol g⁻¹ h⁻¹ at relatively mild conditions (1.5 Mpa, 260 °C). This exchange increases the splitting H adsorptions on Cu species, and strengthen interactions between Cu species and oxygen vacancies at the interface, thus promoting the formations of Cu^δ+ species, which is critical to the formation of methanol. This study provides a promising alternative for the understandings the role of exchanged Pd in the Pd-Cu/ZrO₂ catalysts for CO₂ hydrogenation to methanol.

本研究采用离子交换法将单原子Pd负载在Cu/ZrO _{2上，研究了Pd在Cu/ZrO 2}中对CO ₂加氢制甲醇的作用。在相对温和的条件下（1.5 Mpa，260 °C），Pd 与 Cu/ZrO ₂的交换将甲醇产率从 223 μmol g ^-1 h ^-1提高到 512 μmol g ^-1 h ^{-1 。}这种交换增加了对Cu物种的分裂H吸附，并加强了Cu物种与界面处氧空位之间的相互作用，从而促进了Cu ^δ+的形成物种，这对甲醇的形成至关重要。本研究为理解交换的 Pd 在 Pd-Cu/ZrO ₂催化剂中用于 CO ₂加氢制甲醇的作用提供了一个有前景的替代方案。