期刊
CHEMISTRYSELECT
卷 5, 期 23, 页码 6907-6917出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202001090
关键词
Deep eutectic solvents; Maleic anhydride; n-Butane oxidation; Vanadium phosphorus oxide
资金
- National Key Research and Development Program of China [2017YFA0206803]
- National Nature Science Foundation of China [21808223]
- Key Programs of the Chinese Academy of Sciences [KFZD-SW-413]
- Key Programs of Fujian Institute of Innovation, CAS [FJCXY18020203]
- National Science Fund for Excellent Young Scholars [21722610]
- K. C. Wong Education Foundation [GJTD-2018-04]
- National Natural Science Foundation of Chain [21808223]
Deep eutectic solvents (DESs) consisting of choline chloride (ChCl) and polyols (Ethylene glycol (EG), 1,4-Butanediol (BDO), Glycerol (GL), and Xylitol (XYL)) as a green and effective promoter assisting the synthesis of vanadium phosphorus oxide (VPO) were innovatively proposed and investigated in detail for the selective oxidation of n-butane to maleic anhydride (MA). The catalytic results showed that the performance of VPO catalysts was improved significantly with the addition of polyols DESs. A combination of techniques including SEM, TEM, XRD, FT-IR, Raman, XPS, and TG-DTA were employed to investigate the effect of DES on the structure of VPO. We correlated the structure of the catalysts with catalytic performance and found that the n-butane conversion was positively correlated with the intensity ratio of I-(020)/I((204))for catalysts, and the MA selectivity of VPO catalysts was negatively correlated with the vanadium average oxidation state on the catalyst surface.
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