Now showing items 91-100 of 119
Model hydrodesulfurization catalysts: Solid state synthesis and characterization of iron containing molybdenum sulphide
(Elsevier, 1989)
Model catalysts for hydrodesulfurization were synthesized via solid state reactions of elemental sulfur with metallic iron and molybdenum powders. The starting materials had a general stoichiometry of Fe2[alpha]Mo1-[alpha]S2 ...
CO hydrogenation catalyzed by alumina-supported osmium: Particle size effects
(Elsevier, 1985-10)
Alumina-supported catalysts were prepared by conventional aqueous impregnation with [H2OsCl6] and by reaction of organoosmium clusters {[Os3(CO)12], [H4Os4(CO)12], and [Os6(CO)18]} with the support. The catalysts were ...
A chemisorption and XPS study of bimetallic Pt-Sn/Al2O3 catalysts
(Elsevier, 1991-01)
Bimetallic Pt-Sn/Al2O3 catalysts with nominally 1 wt% Pt and varying tin contents (0-3.25 wt%) prepared by coimpregnation of nonporous Degussa alumina were characterized by chemisorption of H2, O2, and CO at room temperature. ...
Chemisorption and FTIR study of bimetallic Pt---Au/SiO₂catalysts
(Elsevier, 1990-02)
Pt/SiO₂, Au/SiO₂, and bimetallic Pt---Au/SiO₂ catalysts were prepared by incipient wetness impregnation of nonporous SiO₂. The catalysts were characterized after reduction in H₂ by static volumetric chemisorption and ...
Metal dispersion of bimetallic catalysts via stepwise chemisorption and surface titration : I. Ru---Au/SiO2
(Elsevier, 1985-09)
A stepwise chemisorption and titration procedure involving H2 and O2 as adsorbates is used to measure the dispersion of the individual metal components in bimetallic Ru---Au/SiO2 catalysts. The experimental approach is ...
Gold-titania interactions: Temperature dependence of surface area and crystallinity of TiO2 and gold dispersion
(Elsevier, 1984-05)
The influence of temperature on the BET surface area, crystallinity, and anatase/rutile phase transformation of blank TiO2 and Au/TiO2 catalysts is studied. Presence of gold delays the recrystallization of anatase and the ...
Alumina-supported triosmium clusters and ensembles: Characterization by high-resolution transmission electron microscopy
(Elsevier, 1983-11)
Structurally defined supported osmium clusters [HOs3(CO)10---O---Al3(CO)12] with the -OH groups of [gamma]-Al2O3. The supported clusters were heated to 200 [deg]C in argon and then reduced in hydrogen at 400 [deg]C, being ...
Isotopic oxygen exchange on supported Ru and Au catalysts
(Elsevier, 1980-06)
The isotopic exchange reaction of molecular oxygen is applied to supported ruthenium and gold catalysts. The results on supported ruthenium are similar to those on RuO2. The exchange reaction seems to be unaffected by ...
Label-Free Affinity Assays by Rapid Detection of Immune Complexes in Submicrometer Pores This work was supported by an NSF CAREER award (M.M.) and by a research grant from IMRA America and AISIN USA as well as seed funds from the College of Engineering, University of Michigan. The authors thank Daniel J. Estes, Amy P. Wong, Irina Gitlin, and Paul Bina for valuable discussions.
(WILEY-VCH Verlag, 2006-03-27)
No Abstract
The maximum melting temperatures in strain-crystallized van der waals networks
(Steinkopff-Verlag; Steinkopff ; Springer Science+Business Media, 1985-04)
A theory of strain-crystallization of random networks comprised of stereoregular chains is developed. The crosslinks are assumed to be expelled from crystal cores. For this reason, the rubber is considered to be represented ...