Hg-free electro-thermal cascade catalysis for acetylene upgrading into polyvinyl chloride precursor.

ABSTRACT: Acetylene hydrochlorination is the predominant route for producing polyvinyl chloride (PVC) precursors in coal-rich, oil-poor regions. However, this conventional thermocatalytic pathway inevitably uses Hg-based catalysts, which pose serious threats to the environment and human health. Here, we propose an alternative cascade conversion strategy that efficiently converts acetylene to pure dichloroethane (PVC precursor) under ambient conditions without using Hg-based catalysts. This strategy couples an electrocatalytic reactor with a thermocatalytic reactor. In the electrocatalytic reactor, highly selective formation of C₂H₄ (FE_C₂H₄ = 95%) and Cl₂ (FE_Cl₂= 90%) is achieved at a current density of 1 A·cm⁻², using electrochemically in-situ reconstructed Cu nanoparticles as

SUBMITTER: He D 

PROVIDER: S-EPMC12816569 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature