Increasing maleic anhydride selectivity for n-butane oxidation by Y-modified VPO catalysts

被引:5
作者
Li, Wenjiao [1 ,2 ]
Xiao, Yong [1 ]
Guo, Shupeng [1 ]
Jia, Litao [1 ,3 ]
Guo, Heqin [1 ]
Li, Debao [1 ,3 ]
机构
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
关键词
N-butane oxidation; Maleic anhydride; Y-modified VPO catalyst; PHOSPHORUS OXIDE CATALYST; DEEP-EUTECTIC SOLVENTS; IN-SITU RAMAN; ALDOL CONDENSATION; LIGHT ALKANES; ACETIC-ACID; PHOSPHATE; DEHYDROGENATION; PERFORMANCE; FORMALDEHYDE;
D O I
10.1016/j.fuel.2022.126214
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
In the present study, a series of VPO catalysts with different amount of Y were prepared by organic phase method and activated in butane-air atmosphere. The catalytic performance was tested by the selective oxidation of n -butane to maleic anhydride (MA). The catalysts were characterized by SEM, TG, XRD, Raman, XPS, H2-TPR and NH3-TPD techniques. The characterization results showed that the addition of appropriate amount of Y can increase the amount and stability of the rose-like flower clusters of VPO precursors. Meanwhile, the addition of Y greatly increased the proportion of lattice oxygen on catalyst surface and changed the surface acidity of VPO catalyst. As a result, the selectivity and yield of MA were greatly improved by introducing the right amount of Y.
引用
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页数:10
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