Supported Ammonia Synthesis Catalysts Based on Anionic Ruthenium Cluster K2Ru4(CO)13. The Promoting Effect of Cesium Nitrate Full article
Journal |
Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875 |
||||
---|---|---|---|---|---|
Output data | Year: 1997, Volume: 158, Number: 1-2, Pages: L35-L39 Pages count : 5 DOI: 10.1016/S0926-860X(97)00185-3 | ||||
Tags | Ammonia synthesis, Anionic ruthenium carbonyl clusters, Cesium nitrate, Supported catalysts | ||||
Authors |
|
||||
Affiliations |
|
Abstract:
It has been found that the rate of ammonia synthesis over the K2[Ru4(CO)13]-based catalysts on carbonized magnesium oxide and the original graphite-like active carbon ‘Sibunit’ can be considerably enhanced by the introduction of cesium nitrate into the samples followed by reduction of the supported CsNO3 to cesium oxide or hydroxide with dihydrogen. In the case of the catalysts on carbonized magnesium oxide the greatest accelerating effect of cesium is manifested at Cs+: Ru molar ratio of 1.51 : 1. Both an increase and a decrease in this ratio diminishes the activity of the system in ammonia synthesis. Analogous dependence on the amount of the cesium promoter is observed for the catalysts on ‘Sibunit’ carbon but in this case the position of the maximum activity is shifted towards larger cesium contents in the samples. The cesium-promoted catalyst on carbonized MgO is noticeably more active in ammonia synthesis than that on ‘Sibunit’ carbon.
Cite:
Yunusov S.M.
, Likholobov V.A.
, Shur V.B.
Supported Ammonia Synthesis Catalysts Based on Anionic Ruthenium Cluster K2Ru4(CO)13. The Promoting Effect of Cesium Nitrate
Applied Catalysis A: General. 1997. V.158. N1-2. P.L35-L39. DOI: 10.1016/S0926-860X(97)00185-3 WOS Scopus РИНЦ
Supported Ammonia Synthesis Catalysts Based on Anionic Ruthenium Cluster K2Ru4(CO)13. The Promoting Effect of Cesium Nitrate
Applied Catalysis A: General. 1997. V.158. N1-2. P.L35-L39. DOI: 10.1016/S0926-860X(97)00185-3 WOS Scopus РИНЦ
Dates:
Submitted: | Mar 21, 1997 |
Accepted: | May 13, 1997 |
Published print: | Sep 25, 1997 |
Published online: | Jun 1, 1998 |
Identifiers:
Web of science | WOS:A1997XY72500005 |
Scopus | 2-s2.0-4344643225 |
Elibrary | 13272699 |
Chemical Abstracts | 1997:527887 |
Chemical Abstracts (print) | 127:239436 |
OpenAlex | W2050990653 |