Effect of a current polarisation on BIMEVOX membranes for oxidation of propane in a Catalytic Dense Membrane Reactor

Hervé Bodet (1) , Axel Löfberg (1, 2) , Caroline Pirovano (1, 3) , Marlu César Steil (1) , Elisabeth Bordes-Richard (1, 2) , Rose-Noëlle Vannier (1, 3)

1 UCCS - Unité de Catalyse et Chimie du Solide - UMR 8181
2 LCL - Laboratoire de catalyse de Lille - UMR 8010
3 LCPS - Laboratoire de cristallochimie et physicochimie du solide

A BICOVOX dense membrane covered with BICOVOX/Au cermet was investigated at 700°C in the partial oxidation of propane under OCV and under electrical bias. The propane conversion remained constantly equal to 12% whatever the conditions of polarisation. Hydrogen was the main product with a selectivity of 60%. At OCV, no product of oxidation was detected except water which could not be quantified. Under anodic polarisation, traces of CO were observed as well as a small increase of propylene content which can be explained by partial oxidation and oxidative dehydrogenation of propane, respectively. An anodic polarisation led to a decrease of hydrogen due to its oxidation into water. In contrast, an increase of the hydrogen content was observed under cathodic polarisation. However one cannot exclude some thermal cracking of propane, and the role of the BIMEVOX membrane in the catalytic process remains to be clarified.

Mots clés: Catalytic Dense Membrane Reactor; oxidation; BIMEVOX; electrocatalysis

Domaines: Catalyse

Hervé Bodet, Axel Löfberg, Caroline Pirovano, Marlu César Steil, Elisabeth Bordes-Richard, et al.. Effect of a current polarisation on BIMEVOX membranes for oxidation of propane in a Catalytic Dense Membrane Reactor. First International Conference on the Origin of Electrochemical Promotion of Catalysis, 2007, Thessaloniki, Greece. pp.1. ⟨hal-00261075⟩