载体和钌含量对合成氨催化活性的影响  

The Effect of Supporters and Ruthenium Contents on the Reaction Activity for Ammonia Synthesis

作　　者：王丽华[1,2] 林贻基[1,2] 江剑 陈鸿博 林银钟[1,2] 陈守正 廖代伟[1,2] 

机构地区：[1]福建师范大学化学系 [2]厦门大学物理化学研究所化学系和固体表面物理化学国家重点实验室

出　　处：《厦门大学学报（自然科学版）》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

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.

关 键 词：合成氨 催化活性 催化剂 载体 钌 

分 类 号：TQ113.247[化学工程—无机化工]