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The properties of limonite in Australia and Indonesia were examined by using X-ray diffraction, Mossbauer spectroscopy, Thermal gravimetric analysis (TGA) and TEM-EDX in relation to the catalytic activities in the liquefaction of low-rank coals. The molar ratio of H 2 O/Fe in limonite was determined from the weight loss resulting from the dehydration reaction of FeOOH to Fe 2 O ...
In situ scanning tunnelling microscopy was carried out for the underpotential deposition (UPD) of mercury on Au(111) in sulphuric and perchloric acid solutions. In a sulphuric acid solution, a 2112 structure is observed at potentials more positive than the first UPD peak, which is assigned to be of the structure of adsorbed bisulphate ions. After the formation of the first UPD adlayer in the sulphuric...
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