A study of the electric properties of sintered polycrystalline samples of V2O5 under a CH3OH atmosphere and without added extra oxygen has been performed as a function of time. The gas composition was determined by mass spectrometry in the range 373–473 K. It has been concluded from the results that initial adsorption and further oxidation of CH3OH to different products occurs. A possible mechanism for reaction of the intermediates is suggested. The presence of (CH3O)2CH2 (methylal), H2CO, CO, HCOOCH3, CO2, CH3OCH2OH (hemimethylal) and H2O has been detected by mass spectrometry, their relative amounts being dependent on both the temperature and time of contact.
Get full access to this article
View all access options for this article.
References
1.
AiM. (1978) J. Catal. 54, 426.
2.
AiM. (1982) J. Catal. 77, 279.
3.
AriasM., QuarantaN., GambaroL. and ThomasH. (1988) XIth Simp. Iberoam. Catal. (Mexico) Vol. 2, p. 1005.
4.
BaikerA. and MontiD. (1985) J. Catal. 91, 361.
5.
ChonH. and Pajares SomoanoJ. (1969) J. Catal. 14, 257.
6.
IoffeV. and PatrinaI. (1968) Sov. Phys. Solid State10, 639.
7.
LouisC., TatibouetJ. and CheM. (1988) J. Catal. 109, 354.
8.
McLaffertyF. (1969) Interpretation of Mass Spectra Benjamin & Co. Inc., New York.
9.
NagelsP. and DenayerM. (1970) Proc. 10th Int. Conf. Phys. Semicond. Cambridge, UK, p. 321.
10.
QuarantaN., GambaroL. and ThomasH. (1990) XIIth Simp. Iberoam. Catal. (Brasil) Vol. 3, p. 193.
11.
ReyL., GambaroL. and ThomasH. (1984) J. Catal. 87, 520.
