CAS OpenIR
Reliable, environmentally friendly method for the recycling of spent Ag/alpha-Al2O3 catalysts using (NH4)(2)Ce(NO3)(6)
Dong, Xulong1,2,3; Li, Jian1,2,3; Xiao, Qinggui2,3; Zhang, Hui2,3; Qi, Tao2,3
2018-10-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume26Issue:10Pages:2169-2175
Abstract

Traditionally, Ag-containing solid wastes are leached by nitric acid in order to recycle the noble metal. However, the huge amounts of emission of toxic nitrogen oxides demand the development of a new method for silver recycling. Recently, considering the Ce(IV) solution could be regenerated with electrolyzation method, our group invented a novel environmentally friendly process by using Ce(IV) as the oxidant to dissolve silver from the spent Ag/alpha-Al2O3 catalysts without NOx emission. To find out the optimal parameters, in this work, the leaching reaction was thoroughly investigated with respect to the temperature, oxidant and HNO3 concentrations, stirring speed, and time. The optimized leaching reaction gave the leaching silver rate 99.8% in 1 h. The kinetic plots suggested a shrinking core model with the internal diffusion-controlled process and the activation energy of 38.83 kJ.mol(-1). The order in which the experimental conditions influence the reaction was determined through orthogonal analysis: temperature > oxidant concentration > HNO3 concentration > stirring speed. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

KeywordCerium Ammonium Nitrate (Can) Silver Spent Catalyst Leaching Kinetics
DOI10.1016/j.cjche.2018.04.018
Language英语
WOS KeywordCeric Ammonium-nitrate ; Graft-copolymerization ; Silver ; Nanoparticles ; Oxidation ; Gold
Funding ProjectKey Research Program of Frontier Sciences of CAS[QYZDJ-SSW-JSC021] ; Science and Technology Cooperation for Yunnan Provinces and CAS[2016IB002] ; Science and Technology Service Network Initiative of CAS[KFJ-SW-STS-148] ; National Natural Science Foundation of China[21506233] ; National Natural Science Foundation of China[51402303] ; National Natural Science Foundation of China[21606241] ; National Natural Science Foundation of China[51374191]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationKey Research Program of Frontier Sciences of CAS ; Science and Technology Cooperation for Yunnan Provinces and CAS ; Science and Technology Service Network Initiative of CAS ; National Natural Science Foundation of China
WOS IDWOS:000449985600023
PublisherCHEMICAL INDUSTRY PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26666
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Hui; Qi, Tao
Affiliation1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Proc, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Proc, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Dong, Xulong,Li, Jian,Xiao, Qinggui,et al. Reliable, environmentally friendly method for the recycling of spent Ag/alpha-Al2O3 catalysts using (NH4)(2)Ce(NO3)(6)[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2018,26(10):2169-2175.
APA Dong, Xulong,Li, Jian,Xiao, Qinggui,Zhang, Hui,&Qi, Tao.(2018).Reliable, environmentally friendly method for the recycling of spent Ag/alpha-Al2O3 catalysts using (NH4)(2)Ce(NO3)(6).CHINESE JOURNAL OF CHEMICAL ENGINEERING,26(10),2169-2175.
MLA Dong, Xulong,et al."Reliable, environmentally friendly method for the recycling of spent Ag/alpha-Al2O3 catalysts using (NH4)(2)Ce(NO3)(6)".CHINESE JOURNAL OF CHEMICAL ENGINEERING 26.10(2018):2169-2175.
Files in This Item:
File Name/Size DocType Version Access License
Reliable, environmen(1775KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Dong, Xulong]'s Articles
[Li, Jian]'s Articles
[Xiao, Qinggui]'s Articles
Baidu academic
Similar articles in Baidu academic
[Dong, Xulong]'s Articles
[Li, Jian]'s Articles
[Xiao, Qinggui]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Dong, Xulong]'s Articles
[Li, Jian]'s Articles
[Xiao, Qinggui]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.