Carefully designed oxygen-containing functional groups and defects of porous carbon spheres with UV-O-3 treatment and their enhanced catalytic performance | |
Department | ERC国家工程研究中心 |
Han WL(韩维亮); Huang XS(黄晓昇); Lu GX(吕功煊); Tang ZC(唐志诚); Tang ZC(唐志诚) | |
The second department | osso国家重点实验室 |
2018 | |
Source Publication | Applied Surface Science |
ISSN | 0169-4332 |
Volume | 436Issue:436Pages:747-755 |
Abstract | In this paper, the support surface properties (surface oxygen-containing functional groups and structure defects) of porous carbon spheres (PCSs) were carefully designed by as UV assisted O3 technology. CO catalytic oxidation reactions performed over the supported Pd-Ce catalysts on modified porous carbon spheres. Results illustrated that the Pd-Ce/PCSs catalysts exhibited high CO catalytic activity, which were increased at first, and then decreased with UV assistant-O3 treatment time. The Pd-Ce/PCSs-30 catalyst exhibited superior activity and T100 was only 15 °C. Moreover, the Pd-Ce/PCSs-30 catalyst obtained an excellent stability, and 100% CO conversion could be maintained as the time on stream evolutes up to 16h in the presence of H2O in the feed. Based on characterization results, there were two main factors: (a) the surface area and pore volume were decreased with UV-O3 treatment, leading to the enhancement of Pd-Ce particle size, and the decrease of Pd-Ce nanoparticle dispersion and mass transfer efficiency, as well as the decrease of catalytic activity of Pd-Ce/PCSs, (b) the surface oxygen content and defect sites of PCSs were raised by UV-O3 treatment, which could improve surface loading of Pd, Ce and enhance PdOCe bonding interactions, thereby increasing the activity of Pd-Ce/PCSs. |
Keyword | Defects Surface Oxygen Concentration Co Oxidation Uv-o-3 Treatment |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.apsusc.2017.12.079 |
Funding Organization | the National Natural Science Foun-dation of China (21507137 ; 21407154 ; 21707145) ; West Light Foundation of The Chinese Academy of Sciences |
Indexed By | SCI |
If | 4.439 |
Language | 英语 |
Funding Project | 工业催化研究组 ; 环境催化与氢能研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/23700 |
Collection | 精细石油化工中间体国家工程研究中心(ERC) 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Tang ZC(唐志诚) |
Affiliation | State Key Laboratory for Oxo Synthesis and Selective Oxidation, and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China |
Recommended Citation GB/T 7714 | Han WL,Huang XS,Lu GX,et al. Carefully designed oxygen-containing functional groups and defects of porous carbon spheres with UV-O-3 treatment and their enhanced catalytic performance[J]. Applied Surface Science,2018,436(436):747-755. |
APA | Han WL,Huang XS,Lu GX,Tang ZC,&Tang ZC.(2018).Carefully designed oxygen-containing functional groups and defects of porous carbon spheres with UV-O-3 treatment and their enhanced catalytic performance.Applied Surface Science,436(436),747-755. |
MLA | Han WL,et al."Carefully designed oxygen-containing functional groups and defects of porous carbon spheres with UV-O-3 treatment and their enhanced catalytic performance".Applied Surface Science 436.436(2018):747-755. |
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