Modification of VPO catalysts for oxidative dehydrogenation of ethane |
| |
| Authors: | V. A. Zazhigalov J. M. Lopez Nieto B. Solsona G. A. Komashko I. V. Bacherikova J. Stoch |
| |
| Affiliation: | (1) L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, 31 Prospekt Nauki, 252039 Kiev, Ukraine;(2) Instituto de Tecnologia Quimica, Universidad Politecnica de Valencia, Avda los Naranjos s/n, 46071 Valencia, Spain;(3) Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 1 Niezapominajek ul., PL-30239 Krakow, Poland |
| |
| Abstract: | Based on the previously discussed hypothesis concerning the mechanism of conversion of paraffins, we have modified the structure of VPO catalysts by developing the (220) plane of VOHPO4·0.5H2O and introducing a bismuth additive. We have shown that this leads to an increase in the P/V ratio on the surface, an increase in the number of Lewis centers and the strength of such centers, and a change in the ratio of Lewis centers to Brönsted centers. The change in the surface characteristics of the samples, in accordance with the hypotheses, improves their properties in oxidative dehydrogenation of ethane, increasing the catalytic activity and the yield of the target product ethylene. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
