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| Pre-reduction Kinetics of WO2.72 in a Fluidized Bed | |
Liu, Jiayi1; Shang, Huijun1,2; Pan, Feng1,2 ; Du, Zhan1,2
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| 2022-05-25 | |
| Source Publication | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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| ISSN | 0888-5885 |
| Volume | 61Issue:20Pages:6884-6893 |
| Abstract | 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) |
| DOI | 10.1021/acs.iecr.2c01024 |
| Language | 英语 |
| WOS Keyword | NANOSTRUCTURED TUNGSTEN CARBIDE ; CARBURIZATION ; HYDROGEN ; POWDER ; MODEL ; CO ; CARBONIZATION ; ULTRAFINE ; OXIDES ; STEP |
| Funding Project | National Natural Science Foundation of China[21878305] ; National Natural Science Foundation of China[22078326] ; National Natural Science Foundation of China[21908227] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China |
| WOS ID | WOS:000805390500009 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/53702 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Pan, Feng; Du, Zhan |
| Affiliation | 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 |
| Recommended Citation 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. |
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