Controllable modulation of oxygen functional groups and structure defects of porous carbon spheres for CO oxidation | |
Department | ERC国家工程研究中心 |
Han WL(韩维亮); Li, Liyan; Dong F(董芳); Zhao HJ(赵海军); Tang ZC(唐志诚); Lu GX(吕功煊); Tang ZC(唐志诚) | |
The second department | osso国家重点实验室 |
2017 | |
Source Publication | Journal of Molecular Catalysis A: Chemical |
ISSN | 1381-1169 |
Volume | 430Pages:20-28 |
Abstract | Porous carbon spheres (PCSs) were synthesized by surfactant assisted-hydrothermal method and the oxygen functional groups and structure defects of PCSs were controllably modulated by O3 treatment technology. Especially, the treated time and temperature played the significant roles in this strategy. Notably, the SEM indicated that the morphology and particle size of PCSs had not been changed basically after O3 treatment. However, the specific surface area of PCSs decreased with increasing O3 treatment time at 100 ℃ and increased with increasing O3 treatment temperature at 15 min. The effects of oxygen functional groups and structure defects on the activity of Pd-Ce/PCSs were tested in detail. A series of characterizations showed that particle size, the content of surface Pd4+, surface adsorption oxygen, oxygen vacancies, and structure defects obviously increased after O3 treatment. The increased content of surface Pd4+, surface adsorption oxygen, oxygen vacancies, and structure defects were advantageous to the improvement of activity, but the enlarged particle size was disadvantageous. Therefore, the O3 treatment temperature and time is vitally significant for the effective regulation of active sites of PCSs surface. Besides, the effect of moisture on CO conversion was also investigated, and the optimal catalyst showed excellent stability under moisture condition. |
Keyword | Catalytic Oxidation O-3 Treatment Structure Defect Oxygen Functional Group |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.molcata.2016.12.007 |
Funding Organization | The National Natural Science Foundation of China (21507137;21407154);The National Basic Research Program of China (2013CB933200);West Light Foundation of The Chinese Academy of Sciences |
Indexed By | SCI |
If | 4.211 |
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/362003/22179 |
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,Li, Liyan,Dong F,et al. Controllable modulation of oxygen functional groups and structure defects of porous carbon spheres for CO oxidation[J]. Journal of Molecular Catalysis A: Chemical,2017,430:20-28. |
APA | Han WL.,Li, Liyan.,Dong F.,Zhao HJ.,Tang ZC.,...&唐志诚.(2017).Controllable modulation of oxygen functional groups and structure defects of porous carbon spheres for CO oxidation.Journal of Molecular Catalysis A: Chemical,430,20-28. |
MLA | Han WL,et al."Controllable modulation of oxygen functional groups and structure defects of porous carbon spheres for CO oxidation".Journal of Molecular Catalysis A: Chemical 430(2017):20-28. |
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