Hollow-ZrO ₂ @CuZnAl-LDH-Derived Catalyst for Direct CO ₂ Hydrogenation to Methanol

High Resolution Image Download MS PowerPoint Slide Realizing net-zero emissions demands the design of innovative and efficient catalysts for CO 2 valorization. Herein, we report a core@shell-structured catalyst precursor, h-ZrO 2 @Cu 1.3 ZnAl 1.6 -LDH, in which layered double hydroxide (LDH) platelets are arranged around hollow zirconia spheres (h-ZrO 2 ), maximizing the interfacial area between the active LDH component and zirconia promoter. The h-ZrO 2 @Cu 1.3 ZnAl 1.6 -LDH-derived catalyst efficiently converts CO 2 into methanol, reaching space-time yields (STYs) comparable to commercial catalysts, despite a 54% reduction in Cu loading (0.59 g MeOH g cat −1 h −1 at 250 °C, 45 bar, H 2 /CO 2 = 3, 18,000 mL g −1 h −1 weight hourly space velocity, WHSV). Reporting the STY on a per gram copper basis highlights the efficiency of the catalyst: h-ZrO 2 @Cu 1.3 ZnAl 1.6 -LDH is twofold more active than the commercial catalyst under the same conditions (2.7 vs 1.3 g MeOH g cat −1 h −1 ).