Now showing items 31-40 of 65
Intact-protein based sample preparation strategies for proteome analysis in combination with mass spectrometry
(Wiley Subscription Services, Inc., A Wiley Company, 2005-05)
The complexity of tissue and cell proteomes and the vast dynamic range of protein abundance present a formidable challenge for analysis that no one analytical technique can overcome. As a result, there is a need to integrate ...
Electron microdiffraction study of bimetallic Ru---Au/MgO catalysts
(Elsevier, 1986-08)
A microdiffraction study of bimetallic Ru---Au/MgO catalysts is carried out in order to discriminate between the random adsorption versus atomic ordering model proposed for the structure of bimetallic clusters. The ...
Neopentane reactions over bimetallic Pt---Sn/AI2O3 and Pt---Au/SiO2 catalysts
(Elsevier, 1991-12)
The reaction of 2,2-dimethylpropane (neopentane) with hydrogen was studied over two series of supported bimetallic catalysts containing platinum as the primary group VIII metal and either gold or tin as the second metallic ...
The microstructure of bimetallic Ru---Cu/SiO2 catalysts: A chemisorption and analytical electron microscopy study
(Elsevier, 1986-08)
Supported bimetallic Ru---Cu/SiO2 catalysts are characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy, electron microdiffraction, and chemisorption. Metal particles up to 4 nm in diameter ...
Microstructure of a Pd/ceria–zirconia catalyst after high-temperature aging
(Kluwer Academic Publishers-Plenum Publishers; Kluwer Academic Publishers ; Springer Science+Business Media, 1998-03)
A model automotive exhaust catalyst, consisting of 2.25 wt% Pd supported on initially high-surface-area (88 m 2 /g) cerium–zirconium mixed oxide (Ce 0.5 Zr 0.5 O 2 ), was studied by X-ray diffraction (XRD), thermogravimetric ...
Bimetallic Ru-Au catalysts: Effect of the support
(Elsevier, 1981-06)
Ru-Au catalysts supported on SiO2 were characterized by using H2 and O2 chemisorption, wide-angle X-ray scattering, diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. Catalytic activity was measured ...
Infrared spectroscopic study of NO reduction by H2 on supported gold catalysts
(Elsevier, 1986-11)
In situ Fourier transform infrared spectroscopy is used to study the reduction of NO by H2 on Au/SiO2 and Au/MgO catalysts. On these catalysts, large differences in selectivity toward N2 formation had been found depending ...
Influence of chlorine on the surface area and morphology of TiO2
(Elsevier, 1985)
Changes in BET surface area and morphology of TiO2 (anatase) were studied as a function of temperature and level of chlorine contamination. The obj
Characterization and hydrodesulfurization activity studies of unpromoted molybdenum sulfides prepared by elemental solid state reaction
(Elsevier, 1992-10)
Solid state reactions of elemental molybdenum and sulfur were used to synthesize unpromoted, model HDS catalysts. The samples studied had synthesis stoichiometries of MoS2 MoS1.95, and MoS1.975. Catalytic activity for the ...
Solid state synthesis and characterization of model hydrodesulfurization catalysts
(Elsevier, 1989-10)
Solid-state reactions of elemental sulfur with metallic cobalt and molybdenum powders were used to synthesize model catalysts for hydrodesulfurization (HDS). The resulting materials had a general stoichiometry of Co2xMo1-xS2 ...