In this work, compared with non-Cu₂In nanoalloy counterpart Cu-In/ZrO₂ catalysts, a Cu₁In₂Zr₄-O catalyst with the structure of Cu₂In alloy exhibited an excellent performance for CO₂ hydrogenation to CH₃OH. CO₂ conversion (12.8%) and methanol selectivity (72.8%) were outstandingly higher, which indicated that the synergetic effect existed between Cu and In over the Cu₁In₂Zr₄-O catalyst. The formation of Cu₂In alloy caused high dispersion of the active species and high surface area of the Cu₁In₂Zr₄-O catalyst, enhancing catalyst reduction performance. Strong adsorption of CO₂ caused a good conversion property of the Cu₁In₂Zr₄-O catalyst. The strong interaction between the In and Cu species formed a nanoalloy and decreased the catalyst reduction temperature, which led to the high catalytic performance for CO₂ hydrogenation. The Cu₂In alloy rather than metallic Cu was the key active site for the methanol formation.

中文翻译：

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纳米合金中的Cu ₂增强了Cu / ZrO ₂催化剂将CO ₂加氢为甲醇的性能

在这项工作中，与非Cu ₂ In纳米合金对应的Cu-In / ZrO ₂催化剂相比，具有Cu ₂ In合金结构的Cu ₁ In ₂ Zr ₄ -O催化剂具有出色的CO ₂加氢成CH _3的性能。哦。CO ₂转化率（12.8％）和甲醇选择性（72.8％）显着提高，表明Cu和In之间存在协同作用，优于Cu ₁ In ₂ Zr ₄ -O催化剂。Cu ₂ In合金的形成导致活性物质的高度分散和Cu _1的高表面积在₂ Zr ₄ -O催化剂中，增强催化剂的还原性能。CO _2的强吸附导致Cu ₁ In ₂ Zr ₄ -O催化剂具有良好的转化性能。In和Cu物种之间的强相互作用形成了纳米合金并降低了催化剂的还原温度，这导致了CO ₂加氢的高催化性能。Cu ₂ In合金而不是金属Cu是形成甲醇的关键活性中心。