Ammonia Formation on (Ru + Cs)/C Catalysts by the Interaction of Adsorbed Nitrogen with Hydrogen That Diffused from the Bulk of Cesium-Ruthenium Particles

摘要

The high-temperature α(T_(max) = 625 K) and β(T_(max) = 750 K) states of ammonia and α(T_(max) = 550-750 K), β(T_(max) = 750-900 K), and γ(T_(max) > 900 K) states of hydrogen were detected on (Ru +Cs)/C catalysts for ammonia synthesis activated under the reaction conditions (P = 30 atm; T = 650 K; the initial pressure ratio P_(N_2)/P_(H_2) = 1/3). A mechanism was proposed for the formation of ammonia as a result of the interaction of chemisorbed nitrogen with hydrogen that diffused from the bulk of cesium-ruthenium particles.