Aminotroponiminate Complexes of the Heavy Alkaline Earth and the Divalent Lanthanide Metals as Catalysts for the Hydroamination/Cyclization Reaction

2008 ◽  
Vol 27 (6) ◽  
pp. 1207-1213 ◽  
Author(s):  
Simmi Datta ◽  
Michael T. Gamer ◽  
Peter W. Roesky
Keyword(s):  
Alkaline Earth ◽  
Cyclization Reaction ◽  
Lanthanide Metals ◽  
Divalent Lanthanide

Bis(phosphinimino)methanides as Ligands in Divalent Lanthanide and Alkaline Earth Chemistry — Synthesis, Structure, and Catalysis.

ChemInform ◽  
2006 ◽  
Vol 37 (13) ◽  
Author(s):  
Tarun K. Panda ◽  
Agustino Zulys ◽  
Michael T. Gamer ◽  
Peter W. Roesky
Keyword(s):  
Alkaline Earth ◽  
Divalent Lanthanide

Bis(phosphinimino)methanides as ligands in divalent lanthanide and alkaline earth chemistry – synthesis, structure, and catalysis

2005 ◽  
Vol 690 (23) ◽  
pp. 5078-5089 ◽  
Author(s):  
Tarun K. Panda ◽  
Agustino Zulys ◽  
Michael T. Gamer ◽  
Peter W. Roesky
Keyword(s):  
Alkaline Earth ◽  
Divalent Lanthanide

scholarly journals Application of the Redox‐Transmetallation Procedure to Access Divalent Lanthanide and Alkaline‐Earth NHC Complexes

2021 ◽  
Author(s):  
Peter Werner Roesky ◽  
Noah Schwarz ◽  
Xiaofei Sun ◽  
Ravi Yadav ◽  
Ralf Köppe ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Divalent Lanthanide

scholarly journals Effect of the Addition of Alkaline Earth and Lanthanide Metals for the Modification of the Alumina Support in Ni and Ru Catalysts in CO2 Methanation

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 353
Author(s):  
David Méndez-Mateos ◽  
V. Laura Barrio ◽  
Jesús M. Requies ◽  
José F. Cambra
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Noble Metals ◽  
Alkaline Earth ◽  
Alkaline Earth Metals ◽  
Co2 Methanation ◽  
Alumina Support ◽  
Active Metal ◽  
Lanthanide Metals ◽  
Al2o3 Catalyst

In order to reduce greenhouse gas emissions, which are reaching alarming levels in the atmosphere, capture, recovery, and transformation of carbon dioxide emitted to methane is considered a potentially profitable process. This transformation, known as methanation, is a catalytic reaction that mainly uses catalysts based on noble metals such as Ru and, although with less efficiency, on transition metals such as Ni. In order to improve the efficiency of these conventional catalysts, the effect of adding alkaline earth metals (Ba, Ca, or Mg at 10 wt%) and lanthanides (La or Ce at 14 wt%) to nickel (13 wt%), ruthenium (1 wt%), or both-based catalysts has been studied at temperatures between 498 and 773 K and 10 bar pressure. The deactivation resistance in presence of H2S was also monitored. The incorporation of La into the catalyst produces interactions between active metal Ni, Ru, or Ru-Ni and the alumina support, as determined by the characterization. This fact results in an improvement in the catalytic activity of the 13Ni/Al2O3 catalyst, which achieves a methane yield of 82% at 680 K for 13Ni/14La-Al2O3, in addition to an increase in H2S deactivation resistance. Furthermore, 89% was achieved for 1Ru-13Ni/14La-Al2O3 at 651 K, but it showed to be more vulnerable to H2S presence.

THERMOLUMINESCENCE IN ALKALINE-EARTH DOPED KCl IRRADIATED AT ROOM TEMPERATURE

1976 ◽  
Vol 37 (C7) ◽  
pp. C7-158-C7-158
Author(s):  
A. RASCÓN ◽  
J. L. ALVAREZ RIVAS
Keyword(s):  
Alkaline Earth ◽  
Room Temperature
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