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You searched for: Author "Duan, Xuezhi" Remove constraint Author: "Duan, Xuezhi" Subject term catalysts Remove constraint Subject term: catalysts Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Insights into Activated Carbon-Supported Platinum Catalysts for Base-Free Oxidation of Glycerol

Author:
Duan Xuezhi,   et al.   ; Lei Jiaqi; Dong Hua; Chen Wenyao; Qian Gang; Chen De; Zhou Xinggui;     Show all 7 Authors
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.2 pp. 420-427
ISSN:
1520-5045
Subject:
activated carbon; adsorption; catalysts; chemical bonding; cleavage (chemistry); engineering; glyceraldehyde; glycerol; oxidation; oxygen; particle size; platinum
Abstract:
... Two kinds of activated carbon (AC)-supported Pt catalysts with similar particle sizes were respectively synthesized using the polyol method and incipient wetness impregnation method, and then tested for glycerol oxidation in a base-free condition. It is revealed that the initial reaction rate on the Pt catalyst prepared by the polyol method (Pt/ACPO) is nearly triple that on the Pt catalyst prepar ...
DOI:
10.1021/acs.iecr.5b03076

2. Mechanistic Insight into Size-Dependent Activity and Durability in Pt/CNT Catalyzed Hydrolytic Dehydrogenation of Ammonia Borane

Author:
Duan Xuezhi,   et al.   ; Chen Wenyao; Ji Jian; Feng Xiang; Qian Gang; Li Ping; Zhou Xinggui; Chen De; Yuan Weikang;     Show all 9 Authors
Source:
Journal of the American Chemical Society 2014 v.136 no.48 pp. 16736-16739
ISSN:
1520-5126
Subject:
adsorption; ammonia; catalysts; dehydrogenation; durability; hydrogen production; models; particle size; platinum
Abstract:
... We report a size-dependent activity in Pt/CNT catalyzed hydrolytic dehydrogenation of ammonia borane. Kinetic study and model calculations revealed that Pt(111) facet is the dominating catalytically active surface. There is an optimized Pt particle size of ca. 1.8 nm. Meanwhile, the catalyst durability was found to be highly sensitive to the Pt particle size. The smaller Pt particles appear to hav ...
DOI:
10.1021/ja509778y

3. Size Effects of Pt Nanoparticles Supported on Carbon Nanotubes for Selective Oxidation of Glycerol in a Base-Free Condition

Author:
Duan Xuezhi,   et al.   ; Lei Jiaqi; Qian Gang; Zhou Xinggui; Chen De;     Show all 5 Authors
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.42 pp. 16309-16315
ISSN:
1520-5045
Subject:
active sites; carbon nanotubes; catalysts; engineering; glyceraldehyde; glycerol; nanoparticles; oxidation; particle size; platinum
Abstract:
... Different sized Pt nanoparticles supported on carbon nanotubes were prepared and then applied in selective oxidation of glycerol in a base-free condition to understand the size effects. It is shown that the turnover frequency of glycerol increases with Pt particle size to a maximum at the mean size of 2.5 nm followed by a decline with a further increase in size, which may be due to strongly adsorb ...
DOI:
10.1021/ie502706r

4. In Situ Production of Ni Catalysts at the Tips of Carbon Nanofibers and Application in Catalytic Ammonia Decomposition

Author:
Duan Xuezhi,   et al.   ; Ji Jian; Qian Gang; Zhou Xinggui; Chen De; Yuan Weikang;     Show all 6 Authors
Source:
Industrial & Engineering Chemistry Research 2013 v.52 no.5 pp. 1854-1858
ISSN:
1520-5045
Subject:
ammonia; carbon; carbon monoxide; carbon nanofibers; catalysts; engineering; ethylene; gases; methane; nanoparticles; nickel; particle size; roots
Abstract:
... Ni-carbon nanofibers (Ni-CNFs) catalysts were synthesized in situ by the decomposition of carbon-containing gases (i.e., CH₄, CO, and C₂H₄) over Ni/Al₂O₃ catalyst and directly used to catalyze ammonia decomposition. The results showed that Ni nanoparticles were found to locate at the tips of CNFs when using CH₄ and CO as carbon sources, while they located at the roots of CNFs when using C₂H₄ as a ...
DOI:
10.1021/ie3024627

5. Promotional Effect of Carbon on Fe Catalysts for Ammonia Decomposition: A Density Functional Theory Study

Author:
Duan Xuezhi,   et al.   ; Ji Jian; Gong Xueqing; Qian Gang; Zhou Xinggui; Chen De; Yuan Weikang;     Show all 7 Authors
Source:
Industrial & Engineering Chemistry Research 2013 v.52 no.48 pp. 17151-17155
ISSN:
1520-5045
Subject:
activation energy; ammonia; carbon; catalysts; desorption; engineering; iron; methodology; terracing
Abstract:
... Density functional theory calculations have been performed to investigate the recombinative desorption of N on terraced Fe(100) and Fe(110) as well as stepped Fe(111) and Fe(211) surfaces. The results showed that the stepped surfaces, especially the Fe(111) surface, are more active than the terraced surfaces, which could be related to the presence of so-called C₇ sites for the stepped surfaces. Ca ...
DOI:
10.1021/ie4030165