Catalyst Development for Thermo-regenerative Cyclohexane/Benzene/hydrogen Fuel Cell

碳载Pt-Ru复合催化剂对环己烷的邻位芳构化反应具有良好的催化活性，在热再生环己烷/苯/氢电极中具有重要的作用，其开路电压接近理论值。吸附苯的双电子转移过程是速率控制过程，并伴随着双质子通过Nafion膜的供应。我们的Pt-Ru复合电极的电流密度是传统Pt电极的2.44倍。因此，环己烷/苯偶联脱氢和加氢催化剂的设计具有很大的发展前景。

Carbon-supported Pt-Ru composite catalysts, being active for dehydrogeno-aromatization of cyclohexane, have been elucidated to take an important role for the thermo-regenerative cyclohexane/benzene/hydrogen electrode as the cathode, which gave a neary theoretical magnitude of its open circuit voltage. The process of two electron transfer toward absorbed benzene was rate-determining, accompanied by two proton supply through the Nafion membrane. Our Pt-Ru composite electrode gave the current density 2.44 times larger than the conventional Pt electrode. Consequently, the catalyst design for both dehydrogenation and hydrogenation of the cyclohexane/benzene couple became prospective.