TPR Investigation of bimetallic Ru-Cu samples supported on SiO2, Al2O3 and MgO
نویسندگان
چکیده
منابع مشابه
TPR INVESTIGATION OF BIMETALLIC Ru-Cu SAMPLES SUPPORTED ON SiO 2, AI203 AND MgO
Bimetallic R u ~ u samples supported on SiO 2, AI203 and MgO were studied by the temperature-programmed reduction (TPR) technique. Experiments were carried out both on unreduced impregnated salts and after oxidation of already reduced samples. The TPR profiles reveal a simultaneous reduction of ruthenium and copper precursors, even though the Ru and Cu in the monometallic catalysts exhibit redu...
متن کاملPreparation and performance analysis of γ-Al2O3 supported Cu-Ru bimetallic catalysts for the selective Wet Air Oxidation of Aqueous Ammonia to Nitrogen.
Series of Copper Ruthenium (Cu-Ru) bimetallic catalysts supported on γ-Al2O3 with different metal loading are prepared and investigated for catalytic wet air oxidation of ammonia to nitrogen. The ammonia decomposition activity was studied at three different temperatures i.e. 150oC, 200oC, and 230 oC and it is found that catalytic activity increases with the increase in temperature along with th...
متن کاملCu adatom charging on Mo supported ScN, MgO and NaF
Molybdenum supported thin films of ScN, MgO and NaF with a Cu adatom have been studied in the framework of density functional theory. We have observed a charge transfer from the metal/film interface to the Cu atom and investigated its relation to surface and interface deformations. We find that a weak interaction between the metal and the film is a promising prerequisite for adatom charging. Th...
متن کاملInterface effects in the electronic structure of TiO2 deposited on MgO, Al2O3 and SiO2 substrates
a Departamento de Física Aplicada, Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain b ITM CIDA, Arturo Soria 289, E-28033 Madrid, Spain c Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-990 Curitiba PR, Brazil d Centro de Ingeniería Avanzada de Superficies, AIN. 31191 Cordovilla-Pamplona, Spain...
متن کاملEffect of neutron-irradiation on optical properties of SiO2- Na2O-MgO-Al2O3 glasses
Silica based glasses are used as nuclear shielding materials. The effect of radiation on these glasses varies as per the constituents used in these glasses. Glasses of different composition of SiO2-Na2OMgO-Al2O3 were made by melt casting techniques. These glasses were irradiated with neutrons of different fluences. Optical absorption measurements of neutron-irradiated silica based glasses were ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Thermal Analysis
سال: 1987
ISSN: 0368-4466,1572-8943
DOI: 10.1007/bf01912699