中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Promoting effect of nitration modification on activated carbon in the catalytic ozonation of oxalic acid

文献类型:期刊论文

作者Cao, Hongbin1,2,3; Xing, Linlin1,2,3; Wu, Guangguo1,2,3; Xie, Yongbing1,2,3; Shi, Shaoyuan1,2,3; Zhang, Yi1,2,3; Minakata, Daisuke4; Crittenden, John C.4
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2014-03-01
卷号146期号:1页码:169-176
关键词Catalytic ozonation Activated carbon Surface modification Nitration Amination
ISSN号0926-3373
其他题名Appl. Catal. B-Environ.
中文摘要A commercial activated carbon (AC) was modified with a nitration or amination method, and the effects of textural and chemical properties on the ability of the AC samples to destroy oxalic acid (OA) using ozone was investigated in this work. The degradation rates of OA on the nitrated and aminated AC samples increased by 38.5% and 9.6%, respectively. The adsorption capacity of the AC sample was not enhanced after modification, but the decomposition rate of ozone in solution increased. The surface area of AC significantly decreased after nitration because the entrance of micropores and some larger pores were blocked by the modified functional groups. In addition, the surface area was recovered when the nitrated AC was further aminated. We demonstrated that the enhancement in the catalytic activity was primarily caused by the differences in surface chemistry. The pH(pzc) values and Boehm titration results showed that nitration increased the acidity of the AC, while more basic groups were grafted after amination. X-ray photoelectron spectroscopy (XPS) and temperature programmed desorption (TPD) results confirmed that-NO2 and acid oxygenated groups were simultaneously grafted onto AC during nitration. Meanwhile, the-NO2 group was completely reduced to-NH2 and the carboxylic groups were partially reduced during amination. The basic groups (-NH2 and possible pyrone groups) enhanced the catalytic activity of the aminated AC sample, and the increased activity of the nitrated AC material was mainly due to the acid oxygenated surface groups. (C) 2013 Elsevier B.V. All rights reserved.
英文摘要A commercial activated carbon (AC) was modified with a nitration or amination method, and the effects of textural and chemical properties on the ability of the AC samples to destroy oxalic acid (OA) using ozone was investigated in this work. The degradation rates of OA on the nitrated and aminated AC samples increased by 38.5% and 9.6%, respectively. The adsorption capacity of the AC sample was not enhanced after modification, but the decomposition rate of ozone in solution increased. The surface area of AC significantly decreased after nitration because the entrance of micropores and some larger pores were blocked by the modified functional groups. In addition, the surface area was recovered when the nitrated AC was further aminated. We demonstrated that the enhancement in the catalytic activity was primarily caused by the differences in surface chemistry. The pH(pzc) values and Boehm titration results showed that nitration increased the acidity of the AC, while more basic groups were grafted after amination. X-ray photoelectron spectroscopy (XPS) and temperature programmed desorption (TPD) results confirmed that-NO2 and acid oxygenated groups were simultaneously grafted onto AC during nitration. Meanwhile, the-NO2 group was completely reduced to-NH2 and the carboxylic groups were partially reduced during amination. The basic groups (-NH2 and possible pyrone groups) enhanced the catalytic activity of the aminated AC sample, and the increased activity of the nitrated AC material was mainly due to the acid oxygenated surface groups. (C) 2013 Elsevier B.V. All rights reserved.
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]OZONE/ACTIVATED CARBON ; OZONE DECOMPOSITION ; SURFACE-CHEMISTRY ; ORGANIC-COMPOUNDS ; AQUEOUS-SOLUTIONS ; WATER-TREATMENT ; RATE CONSTANTS ; ADSORPTION ; TEMPERATURE ; EFFICIENCY
收录类别SCI
原文出处://WOS:000327904000020
语种英语
WOS记录号WOS:000327904000020
公开日期2014-05-06
版本出版稿
源URL[http://ir.ipe.ac.cn/handle/122111/8179]  
专题过程工程研究所_研究所(批量导入)
作者单位1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
3.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
4.Georgia Inst Technol, Brook Byers Inst Sustainable Syst, Atlanta, GA 30332 USA
推荐引用方式
GB/T 7714
Cao, Hongbin,Xing, Linlin,Wu, Guangguo,et al. Promoting effect of nitration modification on activated carbon in the catalytic ozonation of oxalic acid[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2014,146(1):169-176.
APA Cao, Hongbin.,Xing, Linlin.,Wu, Guangguo.,Xie, Yongbing.,Shi, Shaoyuan.,...&Crittenden, John C..(2014).Promoting effect of nitration modification on activated carbon in the catalytic ozonation of oxalic acid.APPLIED CATALYSIS B-ENVIRONMENTAL,146(1),169-176.
MLA Cao, Hongbin,et al."Promoting effect of nitration modification on activated carbon in the catalytic ozonation of oxalic acid".APPLIED CATALYSIS B-ENVIRONMENTAL 146.1(2014):169-176.

入库方式: OAI收割

来源:过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。