Advances in selective hydrogenation of alkynes to alkenes
Selective hydrogenation of alkynes to produce alkenes is a crucial reaction process in petroleum and chemical engineering.Traditional thermal catalytic methods have been extensively studied over the past few decades,while the research on emerging photo-/electrocatalytic methods is still in its preliminary stage and designing highly efficient catalysts remains a significant challenge.The rapid progress in catalyst synthesis methods,structural characterization techniques,and theoretical calculations has gradually revealed the reaction mechanisms and the mechanisms of catalytic active sites involved in the selective hydrogenation of alkynes.This review provides an overview of recent advancements in various catalysts for selective hydrogenation of alkynes and summarizes the corresponding strategies for designing high-performance catalysts.A comparison between traditional thermal catalytic hydrogenation and photo-/electrocatalytic selective hydrogenation routes is made,with a focus on the different characteristics and analysis of the problems and their possible solutions in various types of catalytic hydrogenation reactions.Furthermore,a concise overview of the current research status in this field is provided,along with the major challenges and future development trends.Additionally,the review highlights the potential directions in catalyst design and modulation of target product selectivity for future research.
selective catalytic hydrogenation of alkynesthermocatalyticphotocatalysiselectrocatalytic
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