Improvement in the activity of Ni/In2O3 with the addition of ZrO2 for CO2 hydrogenation to methanol

Ni/In2O3 was confirmed to be active for CO2 hydrogenation to methanol. Herein, the In2O3-ZrO2 solid solution was prepared to support the highly dispersed nickel catalyst by chemical reduction. A CO2 conversion of 17.9% with a space-time yield (STY) of methanol of 0.63 g(MeoH) g(cat)(-1) h(-1) was achieved at 300 degrees C and 5 MPa on Ni/In2O3-ZrO2 of 5 wt% Ni loading. The STY of methanol has a 43.2% increase, compared to Ni/In2O3. The use of ZrO2 optimizes the oxygen vacancies for CO2 activation. The highly dispersed Ni catalyst facilitates hydrogen spillover, which improves hydrogenation ability and the formation of oxygen vacancies.

Automated summary

Ni/In2O3-ZrO2 catalyst supported on In2O3-ZrO2 solid solution was prepared and applied in CO2 hydrogenation to methanol. The catalytic performance of Ni/In2O3-ZrO2 showed higher methanol space-time yield compared to Ni/In2O3.