Novel α-alumina crystalline nanosheets are used for the preparation of alumina-carbon composites, in which the latter component is phenolic resin-based ordered mesoporous carbon. A unique feature of these composites is perpendicular orientation of ordered mesopores of the carbon to the (001) facets of nonporous α-alumina nanosheets accompanied by significant enlargement of these mesopores in co...

In order to understand the beneficial effect of Pt on the adherence of thermally grown alumina scales, sessile drop experiments were performed to study the wetting of poly-crystalline alumina by nickel-aluminum alloys with or without platinum addition where the amount of Pt ranged from 2.4 to 10 at.%. Subsequent interfacial structure was evaluated using atomic force microscopy. Platinum additio...

• Validation of optimum operating conditions for a Cu-based oxygen carrier. Very low air excess may be used in chemical looping combustion. Complete CH 4 conversion is achieved. Negligible copper loss due to migration the surface particles. Excellent mechanical performance Chemical combustion (CLC) allows fuel with inherent CO 2 capture by using an carrier transfer from fuel. Previously CLC sca...

Chemical Looping Combustion is a promising midterm solution to mitigate CO2 emission, by carrying out indirect fuel combustion and allowing inherent separation of CO2. During the CLC process, an oxygen material subjected successive oxidation-reduction reactions at high temperature which induce significant degradation. CuO/Al2O3 based materials have been widely considered as carriers (OC). Howev...

The effects of (+ )-catechin adsorption to the alumina surface were studied by -potential and surface free energy determination. The presence of catechin causes essential changes in the alumina -potential, which at the concentration slightly higher than 10 M reverses from the positive into negative one. At constant concentration of catechin (10 M), the effect on -potential of alumina as a funct...