氯化钌氨作前驱体制备高活性的氨合成催化剂(英文)  

Ruthenium Ammonium Chloride as a Precursor for the Preparation of High Activity Catalysts for Ammonia Synthesis

作　　者：倪军[1] 王榕[1] 林建新[1] 魏可镁[1] 

机构地区：[1]福州大学化肥催化剂国家工程研究中心,福建福州350002

出　　处：《催化学报》2009年第3期185-190,共6页

基　　金：Supported by the National Natural Science Foundation of China (20576021);the National Science and Technology Support Program of China (2007BAE08B02)

摘　　要：以氯化钌和水合肼反应制备了新型的氯化钌氨前驱体Ru(NH3)5Cl3.透射电镜和CO化学吸附结果表明,由Ru(NH3)5Cl3前驱体制备的活性炭(AC)负载的RuN/AC催化剂中,钌纳米粒子分散度高,粒径分布均匀.与以氯化钌为前驱体制备的Ru/AC催化剂相比,RuN/AC催化剂具有更高的氨合成活性,在10MPa和10000h-1条件下活性增幅超过10%.Ruthenium ammonium chloride, Ru（NH3）5Cl3, was prepared by the chemical reaction of ruthenium chloride with hydrazine hydrate and used as a novel ruthenium precursor for the preparation of activated carbon （AC）-supported Ru catalysts for ammonia synthesis. The results from TEM and CO chemisorption show that the Ru nanoparticles on the RuN/AC catalyst prepared from the Ru（NH3）5Cl3 precursor have much higher dispersion and more uniform size distribution than that on the Ru/AC catalyst from the RuC13 precursor. The activity of the RuN/AC catalyst for ammonia synthesis was increased by more than 10% compared with the Ru/AC catalyst under the reaction conditions of 10 MPa and 10 000 h^-1.

关 键 词：氯化钌氨 前驱体 钌 负载型催化剂 氨合成 

分 类 号：TQ113.24[化学工程—无机化工]