Generalized reactivity descriptor of defective carbon catalysts for acetylene hydrochlorination: the ratio of sp2:sp3 hybridization

The golden section point in carbon catalysts for acetylene hydrochlorination has been determined. The surface sp2 : sp3 ratio of two types of carbon catalysts, including nanodiamond- and graphite-oriented carbons, both have a volcano relationship with the catalytic performance for acetylene hydrochlorination, and the optimized ratios are both around 32-35%.