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3 Polish Journal of Chemistry

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Selective Oxidation of Isobutane and Isobutene over Hydrothermally Synthesized Mo-V-Te-Ce–O Mixed Oxide Catalyst

Guan J. Q., Wu S. J., Shao Y. Q., Ma Y. Y., Shang F. P., Yu X. F., Liu J., Kan Q. B.

Polish Journal of Chemistry

2009

Vol. 83, nr 4

605-613

MoV0.3Te0.23 and MoV0.3Te0.23Ce0.2 catalysts were prepared by a hydrothermal synthesis method and tested for the oxidation of isobutane and isobutene. Characterization results (XRD, FT-IR, TPR, BET, and XPS) showed that the structure and properties of the Mo–V–Te-based catalysts are relatively different depending on the presence of Ce element. Catalytic tests showed that the selectivity to methacrylic acid can comparatively be improved by the addition of Ce into the MoV0.3Te0.23 catalyst for the selective oxidation of isobutane.

Preparation of Mo-V Catalysts for Selective Oxidation of Isobutane

Guan J. Q., Wu S. J., Jing S. B., Xu C., Wang Z. Q., Shang F. P., Kan Q. B.

Polish Journal of Chemistry

2009

Vol. 83, nr 10

1831-1836

A series of Mo-V-O catalysts for the selective oxidation of isobutane were prepared by a hydrothermal method and by a solution reaction. The synthesis method, catalyst composition and calcination temperature have great effect on the catalytic behavior. Catalytic tests showed that MoV0.3 catalyst prepared by a hydrothermal method exhibited the best catalytic behavior. Using this catalyst 10.7 per cent selectivity to methacrolein and 15.3 per cent selectivity to methacrylic acid can be achieved at an isobutane conversion of 10.4 per cent at 380 graduate C.

Selective Oxidation of Isobutane and Isobutene over Mo-Te Mixed Oxide Catalysts

Guan J. Q., Wu J. S., Shao Y. Q., Xu H. Y., Yang Y., Xu L., Zhen K. J., Kan Q. B.

Polish Journal of Chemistry

2008

Vol. 82, nr 8

1571-1571

A series of TeMox (x = 3–6) mixed oxides were prepared and investigated for the selective oxidation of isobutane and isobutene. Both the characterization results and the catalytic properties of the samples are quite different, depending on the composition of the calcined samples. Among them, TeMo3 catalyst showed the best total selectivity to methacrolein and methacrylic acid (as high as 46%), and their yield reached 10.1% at 400°C in the selective oxidation of isobutane. How ever, TeMo4 catalyst showed the best catalytic performance in the selective oxidation of isobutene, in which 73% selectivity to methacrolein and 9% selectivity to methacrylic acid can be obtained at 77.5% isobutene conversion at 440 graduate C.