Design of choline chloride modified USY zeolites for palladium-catalyzed acetylene hydrochlorination

USY zeolites (USY) were applied to design and synthesize palladium-based heterogeneous catalysts for exploring an efficient non-mercuric catalyst for acetylene hydrochlorination. Choline chloride (ChCl) was selected as the nitrogen-containing ligand to modify the Pd@USY catalysts and the proposed Pd...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2022-03, Vol.12 (16), p.9923-9932
Main Authors: Long, Zeqing, Wang, Lu, Yan, Haijun, Si, Jianxin, Zhang, Meng, Wang, Jide, Zhao, Ling, Yang, Chao, Wu, Ronglan
Format: Article
Language:English
Subjects:
Acetylene
Catalysts
Catalytic converters
Chemical synthesis
Chemistry
Choline
Density functional theory
Design modifications
Hydrochlorination
Palladium
Selectivity
Vinyl chloride
Zeolites
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:USY zeolites (USY) were applied to design and synthesize palladium-based heterogeneous catalysts for exploring an efficient non-mercuric catalyst for acetylene hydrochlorination. Choline chloride (ChCl) was selected as the nitrogen-containing ligand to modify the Pd@USY catalysts and the proposed Pd@15ChCl@USY catalyst exhibited obviously the best catalytic performance with a stable acetylene conversion and vinyl chloride selectivity of over 99.0% for more than 20 h. According to the results of characterization and the density functional theory calculations, it is indicated that the addition of ChCl can significantly inhibit the agglomeration and loss of the Pd active species, prevent carbon deposition and enhance the ability of HCl and C H adsorption and C H Cl desorption, resulting in promoting the catalytic performance of Pd@USY catalysts during the acetylene hydrochlorination reaction.
ISSN:2046-2069
2046-2069
DOI:10.1039/d2ra01142e