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论文类型：期刊论文

发表时间：2021-03-06

发表刊物：ACS APPLIED MATERIALS & INTERFACES

卷号：12

期号：17

页面范围：19581-19586

ISSN号：1944-8244

关键字：Ni-ZnO/SiO2; nanocluster catalyst; NaHCO3 hydrogenation; formic acid generation; CO2 conversion

摘要：Conversion of CO2 into fuels and chemicals has been considered to be an important strategy to reduce greenhouse gas emissions and alleviate the energy crisis. Bicarbonate as a CO2 source is convenient for experimental operation. Herein, based on the synergistic effect of Ni and ZnO benefitting from the electronic transfer, ultrasmall Ni-ZnO clusters (similar to 2 nm) stabilized by microporous silica nanoparticles were designed and prepared for catalyzing the hydrogenation of sodium bicarbonate to formic acid. The yield of formic acid reached up to 97.0% at 260 degrees C/3 MPa for 2 h, which is higher than those reported non-noble metal-based catalysts. The good performance of Ni-ZnO/SiO2 can be attributed to the ultrasmall active component size and the synergy effect based on electron transfer between Ni and ZnO.