CO_(2)加氢制甲醇催化剂理化性质对催化性能影响研究进展

Research progress on impact of physicochemical properties of catalysts on catalytic performances for CO_(2) hydrogenation to methanol

化石能源大规模利用造成CO_(2)大量排放,并引发了系列气候问题。将CO_(2)转化为甲醇可实现CO_(2)的减排和资源化利用,是当前的研究热点。CO_(2)加氢制甲醇催化剂已得到了广泛研究,但存在催化活性低、甲醇选择性差以及反应过程中产生的水导致催化剂失活和反应速率降低等问题。全面了解催化剂理化性质与催化性能之间的关系,对于开发高效稳定的催化体系至关重要。首先介绍了CO_(2)加氢制甲醇的3种反应机理;然后综述了关于CO_(2)加氢制甲醇催化剂理化性质对催化性能影响的研究进展,包括金属比表面积和孔隙率、金属颗粒尺寸和分散度、氧空位、酸碱性、金属-载体相互作用以及还原性等;最后对CO_(2)加氢制甲醇催化剂的未来研究进行了展望。

The extensive use of fossil fuels have led to massive CO_(2) emissions,causing a series of climate issues.Converting CO_(2) into methanol can achieve CO_(2) emission reduction and resource utilization,making it a current research hotspot.CO_(2) hydrogenation to methanol catalysts have been extensively studied,but issues such as low catalytic activity,poor methanol selectivity and catalyst deactivation caused by water produced during the reaction,which slows the reaction,still exist.A comprehensive understanding of the relationship between the physicochemical properties of catalysts and their catalytic performance is crucial for the development of efficient and stable catalytic systems.Three reaction mechanisms for CO_(2) hydrogenation to methanol were first introduced.Then the research progress on the impact of the physicochemical properties of CO_(2) hydrogenation to methanol catalysts on their catalytic performances was reviewed,including metal specific surface area and porosity,metal particle size and dispersion,oxygen vacancy,acid-basicity,metal-support interaction and reducibility.Finally,the future researches for CO_(2) hydrogenation to methanol catalysts were prospected.