Pt基双金属催化剂的结构特点及催化应用进展

Advances in structural characteristics and catalytic application of Pt-based bimetallic catalysts

合理设计的Pt基双金属催化剂具有优异的活性、选择性和稳定性,被广泛应用于石油化工、天然气化工、生物质转化等多相催化过程。介绍了负载型Pt基双金属催化剂结构特点,综述了近年来负载型Pt基双金属催化剂在加氢、脱氢、重整等反应中的研究进展。指出还需进一步提高Pt基双金属催化剂Pt活性位的“数量”和“质量”,进而提升催化剂的利用率和本征活性。

Rational designed Pt-based bimetallic catalysts often show excellent activity,selectivity and stability,which are widely used in petrochemical,natural gas chemical,biomass conversion and other important heterogeneous catalysis processes.The structural characteristics of supported Pt-based bimetallic catalysts were introduced,and recent progress of supported Pt-based bimetallic catalysts in reactions such as hydrogenation,dehydrogenation and reforming were reviewed.It was pointed out that the“quantity”and“quality”of Pt active sites in Pt-based bimetallic catalysts should be further improved,in order to enhance their utilization and intrinsic activity.