In this work we have evaluated the H2O and CO2 adsorption characteristics of Lewatit VP OC 1065 in view of the potential application of solid sorbents in post combustion CO2 capture. Here we present single component adsorption isotherms for H2O and CO2 as well as co-adsorption experiments. It was concluded that the sorbent material shows a high affinity in the adsorption of H2O. The adsorption ...

The enhancement by water molecules of the catalytic activity of gas-phase and supported gold nanoclusters toward CO oxidation is investigated with first-principles calculations. Coadsorption of H(2)O and O(2) leads to formation of a complex well bound to the gold cluster, even on a defect-free MgO(100) support. Formation of the complex involves partial proton sharing between the adsorbates, tha...

BACKGROUND AND OBJECTIVE In-vitro performance of the PediaSat system for continuous monitoring of central venous oxygen saturation by spectrophotometry has been evaluated. METHODS PediaSat continuous fibre-optic oximetry catheters were inserted in a black testing chamber, connected with an extracorporeal circuit and filled with human whole blood. Oxygen inflow into the cardiopulmonary bypass ...

0021-9517/$ see front matter Published by Elsevier doi:10.1016/j.jcat.2011.09.015 ⇑ Corresponding author. Fax: +1 510 642 4778. E-mail address: [email protected] (E. Iglesia). 1 Present address: Institute of Catalysis and Petroche 28049 Madrid, Spain. 2 Present address: Chevron Corporation, Richmond, Kinetic and isotopic data are used to interpret the mechanistic role of gaseous H2O molecule...

The electrocatalytic proton reduction activity of a Ni bis(diphosphine) (NiP) and a cobaloxime (CoP) catalyst has been studied in water in the presence of the gaseous inhibitors O2 and CO. CoP shows an appreciable tolerance towards O2, but its activity suffers severely in the presence of CO. In contrast, NiP is strongly inhibited by O2, but produces H2 under high CO concentrations.

The CO-CO adsorbate interaction on Si(100)-2×1 has been investigated with ab initio molecular orbital and hybrid density functional theory calculations using cluster models of the surface. Different adsorption combinations for one and two CO molecules on singleand double-dimer cluster models, Si9H12 and Si15H16, respectively, are described. Our calculations indicate that the second CO molecule ...

The activation of cardiovascular reflexes for postural adaptation questions whether, in healthy humans, the central blood volume is optimised to support the upright position. A functional definition of an 'optimal circulating volume' that provides the heart with enough central blood volume to establish a maximal cardiac output (CO) and mixed venous oxygen saturation (S(v,O2)) at rest was evalua...