CAS OpenIR
Reaction Process of WC Prepared under a CO Atmosphere in a Fluidized Bed
Pan, Feng1; Liu, Jiayi1,2; Du, Zhan1; Zhu, Qingshan1,4; Zhang, Meiju1; Yan, Dong1; Li, Shaofu1,3
2021-01-13
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume60Issue:1Pages:162-172
AbstractCombined with thermodynamic analysis and various characterizations, such as X-ray diffraction, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and so on, the reaction process of WC prepared from WO2.72 in a fluidized bed has been investigated under a CO atmosphere in the range of 800-1000 degrees C. The phase analysis results indicate that WO2.72 undergoes different reaction paths to form tungsten carbide in different temperature ranges. Especially, when the reaction temperature is in the range of 900-950 degrees C, the reaction process follows the following reaction route: WO2.72 -> WO2 -> W2C -> WC, while no W2C is produced in the reported literatures. XPS and TEM results show that solid carbon can be formed by the decomposition of carbon monoxide in both high- and low-temperature regions. The reaction process from WO2.72 to WO2 or W mainly depends on the gas-solid heterogeneous reaction in the initial stage. In the deep reduction or carbonization stage, both gas-solid heterogeneous reaction and solid-phase homogeneous reaction are included in the lower temperature region, while the formation of WC mainly depends on the homogeneous reaction between solid carbon and metallic tungsten in the higher temperature region.
DOI10.1021/acs.iecr.0c04003
Language英语
WOS KeywordTUNGSTEN CARBIDE POWDERS ; AMMONIUM PARATUNGSTATE ; CATALYTIC ACTIVITY ; CARBURIZATION ; REDUCTION ; MIXTURES ; MECHANISM ; NANOPOWDERS ; DEPOSITION ; WO3
Funding ProjectNational Natural Science Foundation of China[21878305] ; National Natural Science Foundation of China[22078326] ; National Natural Science Foundation of China[21908227]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000611072000011
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43521
Collection中国科学院过程工程研究所
Corresponding AuthorPan, Feng; Zhu, Qingshan
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China
3.Nanjing IPE Inst Green Mfg Ind, Nanjing 211135, Peoples R China
4.Univ Chinese Acad Sci, Coll Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Pan, Feng,Liu, Jiayi,Du, Zhan,et al. Reaction Process of WC Prepared under a CO Atmosphere in a Fluidized Bed[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2021,60(1):162-172.
APA Pan, Feng.,Liu, Jiayi.,Du, Zhan.,Zhu, Qingshan.,Zhang, Meiju.,...&Li, Shaofu.(2021).Reaction Process of WC Prepared under a CO Atmosphere in a Fluidized Bed.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,60(1),162-172.
MLA Pan, Feng,et al."Reaction Process of WC Prepared under a CO Atmosphere in a Fluidized Bed".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 60.1(2021):162-172.
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