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1
Proton Exchange Membrane Fuel Cells 9: ECS Transactions: ...
The non-stoichiometric phase of the HTSC ruthenium catalyst could be responsible for both the low over- potential toward oxygen evolution and rapid degradation. This is supported by the fact that as the HTSC catalyst is heat treated in air, the ...
T. Fuller, C. Hartnig, V. Ramani, 2009
2
Fertilizer Manual - 180페이지
The favorable properties of ruthenium as an ammonia synthesis catalyst have been known for many years. Previously its high price prevented its use; however, ruthenium is now much less expensive, and economics of operation using ...
UN Industrial Development Organization, International Fertilizer Development Center, 1998
3
Ruthenium in Catalysis - 70페이지
In order to test the long-term stability of the catalyst at room temperature, FA was fed into (13 μL minÀ1) the autoclave, ... is limiting catalyst lifetime since the catalyst solution becomes too acidic and therefore deactivates the active ruthenium ...
Pierre H. Dixneuf, Christian Bruneau, 2014
4
Ruthenium in Organic Synthesis - 325페이지
Shun-Ichi Murahashi. Cp*RuCl(PN) (1 mol%) Ph OH (R)-63 Ph OH (rac)-63 t-BuOK 30 oC toluene TOF 479 h-1 Ru NH Ph 2 P 68 PN = PH2P(CH2)2NH2 (12.28) 12.7 Olefin Isomerization Promoted by the Grubbs' Catalyst Metathesis reactions ...
Shun-Ichi Murahashi, 2006
5
Ruthenium Catalysts and Fine Chemistry - 308페이지
The authors suggested that the introduction of cobalt induced the formation of higher oxidation states of ruthenium, for example, Ru(IV) to Ru( VI), leading to a more active oxidation catalyst. However, on the basis of the reported results it is not ...
Christian Bruneau, Pierre H. Dixneuf, 2004
6
Preparation of Catalysts II: Scientific Bases for the ... - 381페이지
RUTHENIUM CATALYSTS FOR AMMONIA SYNTHESIS PREPARED BY DIFFERENT METHODS A. OZAKI, K. URABE, K. SHIMAZAKI and S. SUMIYA ... 2 and 3) and that ruthenium is the most active element for this catalyst system (ref.
G. Poncelet, P.A. Jacobs, B. Delmon, 1977
7
PEM Fuel Cell Electrocatalysts and Catalyst Layers: ... - 649페이지
However, the stability of Pt alloy anode catalysts, even the well- alloyed Pt-Ru catalyst, has a dominant effect on the entire ... The ruthenium dissolution was attributed to the presence of hydrous RuO2 phase in the Pt-Ru catalyst, which can be ...
8
Scientific Bases for the Preparation of Heterogeneous ... - 505페이지
The influence of MgF2 properties on the performance of Ru/MgF2 catalysts in selective reduction of ortho- and parachloronitrobenzene to respective chloroanilines is reported as well. Keywords: MgF2, ruthenium catalyst, hydrogenation of ...
E. Gaigneaux*, M Devillers, S. Hermans, 2010
9
Heterogeneous Catalysis for the Synthetic Chemist - 216페이지
Ruthenium The most important feature of ruthenium catalysts is their ability to promote the hydrogenation of aromatic rings ... that is sometimes observed with ruthenium catalyzed hydrogenations is eliminated by presaturating the catalyst with ...
Robert L. Augustine, 1995
10
Handbook of Industrial Catalysts - 420페이지
The alkali promoter may neutralize residual chloride ions and develop catalyst activity during reduction as ruthenium ions diffuse from the lattice to form crystallites on the edges of graphite crystals. Ruthenium, promoted by alkali metals and ...
