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Title: Low-Temperature CO oxidation on Au/fumed SiO 2-based catalysts prepared from Au(en) 2C 13

Abstract

Many gold catalysts have been actively surveyed, but Au/SiO{sub 2} catalysts that are highly active for CO oxidation still remain evasive. In this work, gold nanoparticles well dispersed on Cab-O-Sil fumed SiO{sub 2} were prepared using Au(en){sub 2}Cl{sub 3} (en = ethylenediamine) as the precursor, and found to be very active for CO oxidation below 0 C. The catalyst pretreatment via reduction and calcination, effect of gold loading, post-treatment in acidic and basic media, catalyst deactivation, storage, regeneration, and effect of surface modification by other metal oxides were explored. The results provide new perspective on the activation and promotion of active Au/SiO{sub 2}-based catalysts.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1]
  1. ORNL
  2. {Steve} H [ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931766
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Catalysis A; Journal Volume: 326; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CARBON MONOXIDE; OXIDATION; CATALYTIC EFFECTS; GOLD; CATALYST SUPPORTS; SILICON OXIDES; CHEMICAL PREPARATION; CATALYSTS; PRECURSOR; GOLD CHLORIDES; CALCINATION; DEACTIVATION; REGENERATION

Citation Formats

Zhu, Haoguo, Ma, Zhen, Clark, Jason C, Pan, Zhengwei, Overbury, Steven, and Dai, Sheng. Low-Temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2C13. United States: N. p., 2007. Web. doi:10.1016/j.apcata.2007.04.004.
Zhu, Haoguo, Ma, Zhen, Clark, Jason C, Pan, Zhengwei, Overbury, Steven, & Dai, Sheng. Low-Temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2C13. United States. doi:10.1016/j.apcata.2007.04.004.
Zhu, Haoguo, Ma, Zhen, Clark, Jason C, Pan, Zhengwei, Overbury, Steven, and Dai, Sheng. Mon . "Low-Temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2C13". United States. doi:10.1016/j.apcata.2007.04.004.
@article{osti_931766,
title = {Low-Temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2C13},
author = {Zhu, Haoguo and Ma, Zhen and Clark, Jason C and Pan, Zhengwei and Overbury, Steven and Dai, Sheng},
abstractNote = {Many gold catalysts have been actively surveyed, but Au/SiO{sub 2} catalysts that are highly active for CO oxidation still remain evasive. In this work, gold nanoparticles well dispersed on Cab-O-Sil fumed SiO{sub 2} were prepared using Au(en){sub 2}Cl{sub 3} (en = ethylenediamine) as the precursor, and found to be very active for CO oxidation below 0 C. The catalyst pretreatment via reduction and calcination, effect of gold loading, post-treatment in acidic and basic media, catalyst deactivation, storage, regeneration, and effect of surface modification by other metal oxides were explored. The results provide new perspective on the activation and promotion of active Au/SiO{sub 2}-based catalysts.},
doi = {10.1016/j.apcata.2007.04.004},
journal = {Applied Catalysis A},
number = 1,
volume = 326,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}