Affiliation:
1. Division of Theoretical and Physical Chemistry, Faculty of Chemistry, Ha Noi National University of Education, 136 Xuan Thuy Road-Cau Giay-Ha Noi, Vietnam
Abstract
The catalytic performance of vanadia catalysts with 15 wt% V supported on TiO2and (15 wt% V + 4.6 wt% La) supported on TiO2in oxidative dehydrogenation (ODH) of n-butane was investigated. The catalysts were characterized by means of TPD-NH3, TPR-H2, UV-Vis, and BET. Testing of samples showed that vanadia catalysts were active for the reaction. It was found that La doping of V/TiO2catalyst had a negative effect on the dispersion of V species and led to formation of V2O5clusters. This resulted in a loss of activity. Although slight improvement of selectivity was observed in comparison to undoped V/TiO2samples due to lower acidity of La-doped –V/TiO2, this could not compensate the loss of activity and finally did not lead to higher butene yields.
Funder
National Foundation for Science and Technology Development
Cited by
1 articles.
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