Electrochemical synthesis of ammonia from wet nitrogen via a dual-chamber reactor using La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3− δ -Ce 0.8 Gd 0.18 Ca 0.02 O 2−δ composite cathode

• DOI: 10.1016/j.cattod.2016.09.006
• Publication Date: 2016-09-18T15:16:15Z
• Authors: Ibrahim A. Amar; Rong Lan; John Humphreys; Shanwen Tao
• Keywords: Ammonia production; Partial pressure

A La0.6Sr0.4Co0.2Fe0.8O3−δ-Ce0.8Gd0.18Ca0.02O2−δ composite cathode was used to investigate the electrochemical synthesis of ammonia from wet nitrogen. Wet nitrogen flown through a dual chamber reactor under atmospheric pressure leading successful ammonia. Ammonia synthesised at rate 1.5 × 10−10 mol s−1 cm−2 400 °C when applying dc voltage 1.4 V, which is highest reported date. This twice that observed formation (7 10−11 cm−2) Co-free cathode, La0.6Sr0.4FeO3−δ-Ce0.8Gd0.18Ca0.02O2−δ as catalyst. higher catalytic activity for may be obtained using catalyst with high oxygen vacancies, introduction vacancies being good strategy improve synthesis.