Polyvinyl chloride(PVC),the third most produced polymer globally,is fundamentally constructed from vinyl chloride,which is primarily synthesized via the catalytic hydrochlorination of acetylene.The development of highly stable mercury-free catalysts,such as Au-based catalysts,is of critical industrial significance for advancing green and sustainable practices within the acetylene hydrochlorination industry.The shift from mercury-based catalysts to noble metal single-atom catalysts doped with p-block(N)heteroatoms has emerged as a leading approach,attracting significant research attention in recent years.Nitrogen(N)doping effectively addresses the core challenges of catalyst deactivation and low atomic utilization efficiency,facilitating the formation of stable ultra-fine metal nanoparticles and even single-atom catalysts,which demon-strate exceptional catalytic performance in acetylene hydrochlorination.Building on this foundation,the latest theoretical and experimental research progress is comprehensively reviewed,with a focus on the properties,performance,and mechanisms of N-regulated acetylene hydrochlorination catalysts.The interplay between catalyst structure,catalytic activity,and stability is examined,and performance descriptors for N-doped single-atom catalysts are summarized to underscore the critical factors in catalyst design.Finally,the future development trends of N-regulated catalysts are explored.A deeper understanding of the mechanisms underlying performance enhancement and the structure-performance relationship can provide valuable insights for the targeted synthesis of materials,thereby fa-cilitating the practical application of mercury-free catalysts in acetylene hydrochlorination.
关键词
乙炔氢氯化/单原子催化/杂原子掺杂/结构-性能关系/性能描述符
Key words
acetylene hydrochlorination/single atom ca-talysis/heteroatom doping/structure-performance relation-ship/performance descriptor
维普
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