nanocrystalline magnesium oxides were prepared by sol–gel method and were characterized by x-ray diffraction, n2-bet, sem and infrared spectroscopy techniques. the results confirmed the formation of nano- mgo materials with crystallite size in range of 5-20 nm and surface areas of 336-556m2/g. the product has been tested as destructive adsorbent for the decontamination of (2-chloroethyl) ethyl ...