Activated carbon supported molybdenum and tungsten carbides for hydrotreatment of fatty acids into green diesel. (15th September 2018)

• Record Type: Journal Article
• Authors: Wang, Fei; Jiang, Jianchun; Wang, Kui; Zhai, Qiaolong; Sun, Hao; Liu, Peng; Feng, Junfeng; Xia, Haihong; Ye, Jun; Li, Zhengxiang; Li, Fanglin; Xu, Junming
• Is Part Of: Fuel. Volume 228(2018)
• Page Start: 103
• Page End: 111
• Publication Date: 2018-09-15
• Subjects: Metal carbides -- Hydrotreatment -- Loading amount -- Carburization temperature -- Hydrotreatment route; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2018.04.150
• Languages: English
• ISSNs: 0016-2361

Abstract

Abstract: The activated carbon supported Mo2 C and W2 C were synthesized successfully for hydrotreatment of fatty acids to produce diesel-like hydrocarbons. The carburization temperature, carburization gas as well as metal loading amount were studied. High carburization temperature was feasible for W2 C/AC, but not for Mo2 C/AC because it resulted in agglomeration of molybdenum compound and destruction of catalyst. Under hydrotreatment condition (360 °C, H2 3.0 MPa, 3.0 h) the conversion achieved 96.01% over Mo2 C/AC prepared at 700 °C and 54.88% over W2 C/AC prepared at 900 °C respectively. During carburization both flowing nitrogen and hydrogen were proper for formation of W2 C/AC, while only flowing hydrogen was appropriate for Mo2 C/AC. The hydrotreatment parameters (reaction temperature and reaction time) were also investigated. The high reaction temperature and long reaction time facilitated the conversion of fatty acids, meanwhile the high reaction temperature simultaneously improved the cracking degree of products.