Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Helmut Schmelz"'
Publikováno v:
Thin Solid Films. 310:228-233
The preparation of thin AlVO4 films on corundum substrates for possible sensor application is described. Thermally stable, crack-free thin films having thicknesses typically below 0.1 μm were obtained by a sol-gel process using alkoxide reagents com
Publikováno v:
Applied Catalysis A: General. 161:167-182
New catalyst preparation methods which avoid the formation of waste water are desirable for environmental reasons, especially in the case of catalysts produced in amounts as large as those in the DeNOx sector. Thermal spreading has recently been appl
Publikováno v:
Applied Catalysis B: Environmental. 8:245-265
Titania-supported tungsten and molybdenum SCR catalysts were investigated before and after poisoning with arsenic(III) oxide. Diffuse reflectance and transmission infrared spectroscopy, including the adsorption of carbon monoxide and ammonia as probe
Publikováno v:
Applied Catalysis A: General. 94:181-203
Titania-supported copper-manganese mixed oxides were investigated in view of the selective oxidation of ammonia to dinitrogen and characterized by X-ray diffraction, photoelectron spectroscopy and temperature programmed reduction. The mixed oxides pr
Publikováno v:
ChemInform. 22
Publikováno v:
ChemInform. 22
Tungsten oxide supported on titania is an important material for the selective catalytic reduction of nitrogen oxides NO{sub x}. A structure analysis by means of X-ray absorption spectroscopy (XANES and EXAFS) is reported for materials prepared by sp
Publikováno v:
ChemInform. 24
Publikováno v:
ChemInform. 24
Publikováno v:
Collection of Czechoslovak Chemical Communications. 57:2465-2474
Molybdenum oxide supported on titania is an important material for catalytic processes in petroleum industry as well as in air pollution control. A structure analysis by means of X-ray absorption spectroscopy (XANES) is reported for sample prepared b
Publikováno v:
Catalysis Letters. 16:97-107
Acidic properties of a TiO2 sample containing approximately 1 wt% S were examined by low-temperature IR spectroscopy of CO and by coadsorption of CO and NH3. Due to the almost negligible OH content of the sample, Bronsted acidity could not be detecte