fulltext.study @t Gmail

Influence of copper precursors on the structure evolution and catalytic performance of Cu/HMS catalysts in the hydrogenation of dimethyl oxalate to ethylene glycol

Paper ID Volume ID Publish Year Pages File Format Full-Text
42350 45921 2010 6 PDF Available
Title
Influence of copper precursors on the structure evolution and catalytic performance of Cu/HMS catalysts in the hydrogenation of dimethyl oxalate to ethylene glycol
Abstract

Cu/HMS catalysts synthesized with different copper precursors via the ion exchange method have been systematically characterized, focusing on the influence of copper precursors. It is found that the texture, surface composition and the surface structure of the dried, calcined and reduced Cu/HMS materials were profoundly affected by the kinds of copper precursors. Based on the characterizations, the copper species on dried, calcined and reduced samples were assigned. Proper copper precursor could be beneficial for the generation of active copper species; enhanced catalytic performance could thus be obtained. By optimizing the gas-hydrogenation reaction conditions, an ethylene glycol yield of 98% could be obtained via the Cu–HMS catalyst using Cu(NH3)4(NO3)2 as the copper precursor.

Graphical abstractHigh copper contented Cu–HMS catalyst prepared by an ion exchange method using Cu(NH3)4(NO3)2 as the copper precursor exhibited high ethylene glycol yield (98%) with 100% conversion and 98% selectivity to ethylene glycol in the hydrogenation reaction of dimethyl oxalate under these optimal reaction conditions: 2.5 MPa, 473 K, H2/dimethyl oxalate (mol/mol) = 50, and LHSV = 0.7 h−1.Figure optionsDownload full-size imageDownload high-quality image (161 K)Download as PowerPoint slide

Keywords
Cu/HMS catalysts; Ion exchange method; Copper precursors; Hydrogenation; Ethylene glycol
First Page Preview
Influence of copper precursors on the structure evolution and catalytic performance of Cu/HMS catalysts in the hydrogenation of dimethyl oxalate to ethylene glycol
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 377, Issues 1–2, 1 April 2010, Pages 128–133
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis