EFFECT OF HYDROGEN CHLORIDE ON THE PYROLYSIS OF ACETYLENE AS STUDIED WITH A SINGLE-PULSE SHOCK TUBE.

Article abstract of DOI:10.1246/bcsj.53.1210

The hydrocarbons produced in the C//2H//2-HCl system were quite the same as those obtained in the C//2H//2-Ar system. The formation rate of the main pyrolysis product, 1-buten-3-yne, was reduced remarkably by the addition of hydrogen chloride, being of third-order and of inverse first-order with respect to the concentrations of acetylene and hydrogen chloride, respectively. As the chlorine atom containing product, only chloroacetylene was found in small amounts, its formation rate being of second-order with respect to acetylene. The inhibitory effect of hydrogen chloride on the 1-buten-3-yne formation rate was interpreted in terms of the change in the termination from the recombination reaction of 2-ethynylvinyl radical to the reaction of 2-ethynylvinyl radical with hydrogen chloride.