Ammonia Synthesis and Methane Dimerization in Solid Electrolyte Reactor Cells

高温质子导体是一种很有兴趣的固体材料，因为它们可以用于多相催化，以便在电化学上改变加氢和脱氢反应的速度。存在许多这样的材料，但真正具有工程意义的材料很少，因为它们还需要具有高导电性和机械强度。这种材料可用于如下配置的电解槽中：在由质子导电材料制成的盘的两侧沉积两个多孔金属膜电极。一侧暴露在含氢气体中，用作阳极电极，而另一侧(阴极)暴露在可通过放热化学反应氢化的化合物中。当放置在电路中时，质子通量被建立，氢从阳极转移到阴极。氢在阴极上反应，而电路将反应自由能转化为电能。因此，可以在同时产生电能的同时生产出有用的化学品。PI计划在这样的电池中测试质子导体SrCe.95 Yb.0503-a，以便在同时联产电力的同时，从氮气和氢气中生产氨，从甲烷中生产C2碳氢化合物(例如乙烯)。

High temperature proton conductors are solid state materials which are of interest because they can be used in heterogeneous catalysis in order to modify electrochemically the rates of hydro- and dehydrogenation reactions. Many such materials exist but few are of real engineering interest because they also need to have high electrical conductivity and mechanical strength. Such materials may be used in an electrolyte cell in the following configuration: Two porous metal film electrodes are deposited on the two sides of a disk made of a proton conducting material. One side is exposed to a hydrogen containing gas and serves as the anodic electrode while the other side (cathode) is exposed to a compound that can be hydrogenated via an exothermic chemical reaction. When placed in an electrical circuit, a proton flux is established and hydrogen is transferred from anode to cathode. Hydrogen reacts on the cathode while the electrical circuit converts the reaction free energy into electricity. Hence a useful chemical can be produced with simultaneous generation of electrical energy. The PI plans to test the proton conductor SrCe.95 Yb.05O3-a in such cells to produce ammonia from nitrogen and hydrogen and C2 hydrocarbons (e.g. ethylene) from methane while simultaneously cogenerating electricity.