Gold-based catalysts for acetylene hydrochlorination
AssigneeTsinghua University
InventorsGuohua Luo, Kai Zhou, Wei Wang, Fei Wei
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Abstract
Powder catalysts that comprise particles of chemical compounds of Au and Cu deposited on acid-washed carbon-based supports are effective catalysts in ethyne hydrochlorination to produce vinyl chloride monomers (VCMs). They give a high selectivity and productivity of VCM and decreased amounts of the byproducts of chloroethane, dichloroethane and others. Thiocyanates are used as complexing agents to extend the catalyst lifetime. The activity of the catalyst is enhanced by doping nitrogen atoms into the support.
Claims13
A chemical composition that is a catalyst of acetylene hydrochlorination comprising a catalyst support on which is deposited the chemical compounds of Au and at least one other metal from the group consisting of Cu, K, Na, Mg, Ce and La, wherein the amount of Au is not more than 0.50 wt %.
Dependencies are inferred from the claim text.