... generations in the repeated two-step reactions and the X-ray diffraction and chemical analysis studies on the solid materials indicated that the two-step water splitting was associated with a redox transition between Fe 2 + – Fe 3 + ions in the cubic YSZ lattice. chemical analysis hydrogen economy iron...

.... Results include scanning electron microscope images of the tube surfaces before and after exposure to the supersaturated water and chemical analysis to determine the mass of calcium carbonate per unit surface area. Measured scaling rates of the two polymer tubes are similar to that of copper. 26 05...

... periodically to determine the extent of scaling. Results include scanning electron microscope images of the tube surfaces before and after exposure to the flowing water, x-ray diffraction to determine the crystalline phase content of the observed deposits, and chemical analysis to estimate the mass of calcium...

... (by Advantech) with an accuracy of 0.1%. For recording the ac signals, they were transmitted to ADAM through Alpha Din isolating signal ac/dc converters DIN-360 (Lee Dickens). Chemical analysis was done with Gas Chromatograph TRACOR 540, calibrated with gas mixture CO, CO 2 , CH 4 , and H 2...