in this paper the role of super paramagnetic iron oxide nanoparticles (spi) on platinum nanoclusters on activated carbon (pt/c) for electrocatalytic oxygen reduction reaction was considered. four composites of pt/c and super paramagnetic iron oxide nanoparticles were prepared with the same total composites weight and different loading of pt/c (1.2, 0.6, 0.4 and 0.3 mg ). the composite attached ...

introduction: sugarcane (saccharum officinarum) is widely cultivated in south west of iran for production of sugar. after harvest, a lot of sugarcane tops remain on the farm that can be used to feed ruminants. the total digestible nutrients (tdn) and crude fiber of sugarcane top is about 72% and 39%, respectively. the digestibility of dry matter (54%) and crude protein (39%) of sugarcane top is...

We have investigated the electrochemical oxidation of sulfuric acid on boron-doped synthetic diamond electrodes (BDD) obtained by HF CVD on p-Si. The results have shown that high current efficiency for sulfuric acid oxidation to peroxodisulfuric acid can be achieved in concentrated H2SO4 ( /2 M) at moderate temperatures (8 /10 8C). The main side reaction is oxygen evolution. Small amounts of pe...

It has long remained a challenge in catalysis to synthesize technical hierarchical nanosized zeolites without growth modifiers and binders. Herein, we report facile synthetic route directly prepare binderless Al-β zeolite shaped form, with retained acidity, sufficient mechanical strengths. The preparation process consists of two steps, where an nanopowder is first using tetraethyl orthosilicate...

An urgent task is the development of new resource-saving technologies for deep processing wastes from hydrometallurgical industry purpose their reuse. Membrane make it possible to create closed technological cycles with reuse recovered components in production, which allows solving many environmental problems. At Abinsk Electric Steel Works Ltd. (Russia), during production copper-coated steel w...