The impact of alkali metals on acetylene hydrochlorination

Abstract

Alkali metals are effective promoters in heterogeneous catalysis, enhancing the catalytic performance. Research over the past few decades has elucidated their promoting mechanisms. This review synthesizes the latest surface science and theoretical advances in alkali metal-doped acetylene hydrochlorination catalysts, focusing on structure–activity relationships and catalytic mechanisms for catalyst optimization. Finally, we critically examine the key challenges and future opportunities in this dynamic field.