alumina is one of the most widely used ceramic materials as catalysts, catalyst supports and absorbents, and also wear resistant coating. this study focused on fabricating and characterizing of alumina ceramic nanoparticles fabricated using new and simple sol-gel method. aluminium oxide (al2o3) nanoparticles were synthesized by iron (iii) nitrate 9-hydrate as precursor. physicochemical properti...

The aim of this study was to evaluate the effect heat treatment on phase composition, hardness, and abrasion wear resistance hard-anodized layers (HAL) 1011 aluminum alloy. X-ray diffraction analysis revealed Al2O3·3H2O in structure HAL synthesized for 1 h. While heat-treated HAL, oxide phases α-Al2O3(amorphous) γ-Al2O3(amorphous) types were found. Treatment at 400 °C h increased microhardness ...

Dry reforming of methane was investigated by non-thermal plasma coupled with different metal oxides: BaO, La2O3, ZnO, CaO, α-Al2O3, MgO, γ-Al2O3, TiO2 and CeO2. The deposited power fixed at 8 W the total gas flow 40 mL.min−1 (75 % helium as diluent). Electrical characterization showed that CO2 CH4 conversions were enhanced (from 5.6 to 30.6 for from 1.9 16.1 CO2) when permittivity reduced 2903 ...

It is of great importance to develop a spherical γ-alumina support with high hydrothermal stability be used in platinum reforming catalyst processes. The porous pseudo-boehmite powder surface area was first synthesized via simple separate nucleation and aging steps method, then as precursor produce γ-Al2O3 an oil–ammonia column method. as-synthesized has substantially greater specific 336.0 m2·...