Elaboration par coulage en bande et cofrittage de réacteurs catalytiques membranaires multicouches-performances

摘要

For few years, conversion of natural gas into synthesis gas (H2+CO) is of great interest for hydrogen or fuel production via GTL process. Catalytic Membrane Reactor (CMR) constitute an economically interesting alternative for syngas production.The design of the reactors consists of a catalyst layer, a mixed conductor membrane with La1-xSrxFe1-yGayO3-d material and an active porous support. La0,8Sr0,2FeO3-d was chosen as material for porous support in order to make co-sintering of dense and porous layers possible. By this way, chemical continuity is ensured and costs are decreased. Supported membranes LSFG8273/LSF821 and LSFN8273/LSFG8273/LSF821 were processed by tape-casting, lamination and co-firing. Reactor performances can be widely increased using the porous support and the catalyst layer. Finally, thermomechanical properties of materials were evaluated