摘要
传统的熔铁型合成氨催化剂的使用条件相当苛刻（４５０℃，１．５～３．５×１０５Ｐａ），近２０年来国外一直致力于开发温和条件下使用的钌基合成氨催化剂［１，２］，并已取得了相当的进展［３］，可望在不久的将来完全实现工业化，代替铁基合成氨催化剂，成为一种高效...
The effects of different supporters, such as active carbon, γ Al 2O 3、NaX molecular sieve, silica gel, Sm 2O 3, CeO 2, Y 2O 3 and C 60 (6%), and contents (2%￣6%) of ruthenium on reaction activity of ruthenium based catalysts for ammonia synthesis have been studied. The activity for ammonia synthesis of Ru based catalysts supported by different supporters decreased in the sequence of C 60 >Sm 2O 3>CeO 2>Y 2O 3>γ Al 2O 3>NaX>AC>silica gel, and the optimum content of ruthenium is 4 %, under 1×10 5 Pa; the Ru K/C 60 catalyst has the highest activity for ammonia synthesis at 350 ℃. Also, the Ru based catalysts have been characterized by SEM.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第1期148-151,共4页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金
固体表面物理化学国家重点实验室资助
关键词
合成氨
催化活性
催化剂
载体
钌
Ammonia synthesis
Ru based catalysts
Supporters
SEM
