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首页> 外文会议>TMS annual meeting exhibition >Synthesis of Mn_2O_3 Nanopowders with Urea and Citric Acid by Solution Combustion Route
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Synthesis of Mn_2O_3 Nanopowders with Urea and Citric Acid by Solution Combustion Route

机译：尿素和柠檬酸溶液燃烧法合成Mn_2O_3纳米粉

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In this study, synthesis of Mn_2O_3 powders by solution combustion route was carried out. Urea (CH_4N_2O) and citric acid (C_6H_8O_7.H_2O) was used as a fuel material in solution combustion synthesis, while manganese nitrate (Mn (NO_3)_2.4H_2O) was used as an oxidant. Surface area of Mn_2O_3 synthesised by urea was calculated as 19,37 m~2/g and 25,07 m~2/g after the calcination at 400 °C and 500°C, respectively. Surface area of Mn_2O_3 synthesised by citric acid was calculated as 63,77 m~2/g when fuel/oxidizer was 1/1, ignition temperature of 250 °C and calcination temperature at 500 °C. Spherical particles of Mn_2O_3 having average particle size of 50-60 nm was synthesised by using urea, while foam like porous structure of Mn_2O_3 was obtained when citric acid was used as a fuel in solution combustion synthesis. Pore diameters between 27 and 55 nm was determined for this powders.
机译：本研究采用固溶燃烧法合成了Mn_2O_3粉体。在溶液燃烧合成中，尿素（CH_4N_2O）和柠檬酸（C_6H_8O_7.H_2O）被用作燃料材料，而硝酸锰（Mn（NO_3）_2.4H_2O）被用作氧化剂。分别在400℃和500℃下煅烧后，尿素合成的Mn_2O_3的表面积分别为19.37m〜2 / g和25.07m〜2 / g。当燃料/氧化剂为1/1，着火温度为250°C，煅烧温度为500°C时，柠檬酸合成的Mn_2O_3的表面积为63,77 m〜2 / g。使用尿素合成了平均粒径为50-60nm的Mn_2O_3的球形颗粒，而当柠檬酸用作溶液燃烧合成的燃料时，获得了类似于Mn_2O_3的多孔结构的泡沫。测定该粉末的孔径在27至55nm之间。

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