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- Title
Catalytic hydrochlorination of acetylene on PdCl/C supported catalysts: Kinetic isotopic effect of HCl/DCl, stereoselectivity, and mechanism.
- Authors
Krasnyakova, T.; Nikitenko, D.; Khomutova, E.; Mitchenko, S.
- Abstract
Two routes of catalytic hydrochlorination of acetylene were found by the isotopic label method for systems with supported palladium KPdCl/C and НPdCl/C catalysts: with formation of the products of syn- and anti-addition of the H(D)Cl molecule to the triple bond of acetylene. Two isotopic effects that differ in magnitude were determined for these systems from the reaction kinetics and the ratio of the yields of the nondeuterated and monodeuterated isotopomers of the product, which are due to the participation of the H(D)Cl molecule in the two reaction stages: limiting chloropalladation and rapid protodemetallation. The effective activation energies and kinetic isotope effects coincided within the experimental errors, which suggests that the reaction mechanisms are similar and the active centers of the catalysts in systems with KPdCl/C and НPdCl/C are of the same nature.
- Subjects
HYDROCHLORINATION; CATALYSTS; ACETYLENE; STEREOSELECTIVE reactions; PALLADIUM; KINETIC isotope effects
- Publication
Kinetics & Catalysis, 2017, Vol 58, Issue 5, p533
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158417050135