The influence of the precursor form on the ammonia synthesis activity of ruthenium zeolite catalysts

被引：13

作者：

Chao, KJ

Lin, LH

Yang, MH

机构：

[1] Department of Chemistry, National Tshinghua University, Hsinchu

[2] U. Catalys. Chim. des Mat. Divises, Univ. Catholique de Louvain, B-1348 Louvain-la-Neuve

来源：

CATALYSIS LETTERS | 1996年 / 38卷 / 3-4期

关键词：

Ru zeolites; ammonia synthesis; SIMS; XPS;

D O I：

10.1007/BF00806582

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

At temperatures ranging from 300 to 450 degrees C and under atmospheric pressure, Ru-3/KY and Ru-3/NaY catalysts prepared from sorbing Ru(CO)(5) generated by Ru-3(CO)(12) on KY and NaY zeolites were found to be much more active for ammonia synthesis than Ru/KY and Ru/NaY prepared from cation exchange with Ru(NH3)(6)Cl-3. Dynamic secondary ion mass spectrometric and X-ray photoelectron spectroscopic studies disclosed that the reduced Ru metal particles were mainly entrapped within the zeolite framework and that their nature is related to the precusor forms.

引用

页码：279 / 282

页数：4

共 21 条

[1] SUPPORT AND PROMOTER EFFECT OF RUTHENIUM CATALYST .2. RUTHENIUM ALKALINE-EARTH CATALYST FOR ACTIVATION OF DINITROGEN [J].