The air pollution stemming from automobile exhaust emissions still pose great challenge to the human health and *** three way catalysts are ideal technology in conversion of the poisonous exhaust species to the enviro...
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The air pollution stemming from automobile exhaust emissions still pose great challenge to the human health and *** three way catalysts are ideal technology in conversion of the poisonous exhaust species to the environmentally compatible *** legislative demands for abatement of noxious exhaust gases,*** V,drives for exploring more efficient and durable catalysts than the Ce1-XZrXO2-δsolid solutions that are being widely used in the *** this report,Nanocrystalline Tb1-XZrO2-δsolid solutions were synthesized by ultrasound assisting *** oxygen storage capacities(OSC) and thermal stability were investigated using TPD and TPR ***,XRD,XPS,and Electrochemical Impedance techniques(EIS) were conducted to explore the relationship between the OSC and the structure of the catalysts in micro-,nano-,atomic and electronic *** is the first report that Tb1-XZrO2-δdisplay higher OSC and thermal stability than Ce1-XZrXO2-δ.The mechanisms of OSC were interpreted based on the behavior of the two kinds of *** results demonstrate that Tb1-XZrO2-δcatalysts be a powerful candidate in reducing the automobile exhaust pollutants.
In coking process,coal whose particle size distribution is very wide needs to be classified and milled so that coal moisture which will decline as particle size enlarges and hardly need to be controlled when particle ...
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In coking process,coal whose particle size distribution is very wide needs to be classified and milled so that coal moisture which will decline as particle size enlarges and hardly need to be controlled when particle size is>4mm needs to be controlled from about>12%to 6～9%and fraction of<3mm of coal can be adjusted from about 60%to 80%according to particle *** addition,it's difficult for flue gas from coking oven whose temperature is about 200-300℃to be used because of its low-quality ***,an equipment integrated with upside pneumatic bed and bottom fluidized bed was developed,with which coal moisture and classification can be realized integratingly using hot flue *** its Performance of classification were investigated in this *** parameters including gas velocity,feeding rate,height of overflow outlet,gas intake method,cross-area ratio of fluidized bed to pneumatic bed were mainly *** is helpful to optimize the moisture-control-classifier and significant for coal moisture control integrating pneumatic classification.
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