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Pre-reduction Kinetics of WO2.72 in a Fluidized Bed

文献类型：期刊论文

作者Liu, Jiayi1; Shang, Huijun1,2; Pan, Feng1,2; Du, Zhan1,2
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期2022-05-25
卷号61期号:20页码:6884-6893
ISSN号0888-5885
DOI10.1021/acs.iecr.2c01024
英文摘要In this paper, WO2 was obtained by the pre-reduction of WO2.72 under the mixture of CO-CO2-N-2. The influence of some factors such as reduction potential (CO/(CO + CO2)), reaction temperature, and residence time on the pre-reduction of WO2.72 was investigated systematically; the kinetic equation of the pre-reduction process was also fitted. The results demonstrated that the reduction degree of WO2.72 was positively correlated with the reduction potential and reaction temperature. WO2.72 could be almost completely converted to WO2 when it was reacted at 950 degrees C for 60 min under a reduction potential of 0.9. The dynamic fitting results showed that the pre-reduction process satisfied the Avrami-Erofe'ev model with an average activation energy of 74.20 kJ/mol in the range of 850-950 degrees C. The relationships between the reduction degree and the reaction temperature, reduction potential, and residence time could be expressed as follows: x = 1 - (1 - 1/0.02374x(CO) - 0.01683 exp (-74.20/T)t )(3)
WOS关键词NANOSTRUCTURED TUNGSTEN CARBIDE ; CARBURIZATION ; HYDROGEN ; POWDER ; MODEL ; CO ; CARBONIZATION ; ULTRAFINE ; OXIDES ; STEP
资助项目National Natural Science Foundation of China[21878305] ; National Natural Science Foundation of China[22078326] ; National Natural Science Foundation of China[21908227]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000805390500009
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/53701]  
专题中国科学院过程工程研究所
通讯作者Pan, Feng; Du, Zhan
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Coll Chem Engn, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Jiayi,Shang, Huijun,Pan, Feng,et al. Pre-reduction Kinetics of WO2.72 in a Fluidized Bed[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2022,61(20):6884-6893.
APA Liu, Jiayi,Shang, Huijun,Pan, Feng,&Du, Zhan.(2022).Pre-reduction Kinetics of WO2.72 in a Fluidized Bed.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,61(20),6884-6893.
MLA Liu, Jiayi,et al."Pre-reduction Kinetics of WO2.72 in a Fluidized Bed".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 61.20(2022):6884-6893.

入库方式： OAI收割

来源：过程工程研究所

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