摘要
用氨合成催化剂性能评价装置,研究了反应温度、压力、空速和氢氮比对以活性炭为载体的钌基氨合成催化剂活性的影响。研究表明,低于400℃时,随着反应温度降低,催化剂的活性急剧降低。随着压力升高,催化剂活性增大。但钌催化剂具有较高的低压活性,适宜低压合成氨。随着空速的降低,催化剂的活性明显提高。在空速和压力一定的条件下,最佳氢氮比随反应温度而异,并且当空速较高或反应温度较低时,氢氮比的变化对催化剂活性的影响更加明显。
The influences of temperature, pressure, space velocity and ratio of hydrogen to nitrogen on the activity of ruthenium based ammonia synthesis catalyst were investigated. Research showed that the catalyst activity decrease sharply when the reaction temperature decline under 400℃. The catalyst activities increases as the pressure enhance or space velocity decline. The ruthenium catalyst has high activity at low pressure, so it suitable for low-pressure ammonia synthesis. At fixed space velocity and pressure, the optimal ratio of hydrogen to nitrogen is different at different reaction temperature. The different ratio of hydrogen to nitrogen has obvious influence on catalyst activity at high space velocity or low reaction temperature.
出处
《化学通报》
CAS
CSCD
北大核心
2006年第11期853-856,共4页
Chemistry
基金
国家自然科学基金(20203016)
中国石油化工股份有限公司(499051)资助项目
关键词
钌基催化剂
氨合成
活性
反应条件
Ruthenium based catalyst, Ammonia synthesis, Activity, Reaction conditions
