Preparation of BaCe0.8Gd0.2O3-delta by the citrate method and its application in the synthesis of ammonia at atmospheric pressure

摘要

BaCe0.8Gd0.2O3-delta is a kind of high-temperature proton conductor. A precursor of BaCe0.8Gd0.2O3-delta solid electrolyte was synthesized by the citrate method and characterized by thermal analysis (thermogravimetric analysis-differential thermal analysis), X-ray diffraction and scanning electron microscopy. Using the sintered samples as a solid electrolyte and silver-palladium alloy as electrodes, we synthesized ammonia from nitrogen and hydrogen at atmospheric pressure in the solid-state proton-conducting-cell reactor. The rate of evolution of ammonia was up to 3.09x10(-9) mol s(-1) cm(-2).