SiOC porous ceramic supported La0.9K0.1CoO3 nano particle catalyst and preparation method
A technology of nano-particles and porous ceramics is applied in the field of perovskite catalysts to achieve the effects of simple preparation process, high thermal stability and high chemical activity
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[0016] Example one
[0017] Weigh 12.9906g La(NO 3 )·6H 2 O, 0.3271g CH 3 COOK, 8.3030g Co(CH 3 COO) 2 ·4H 2 O and 13.2113g glucose were dissolved in 100ml deionized water. In a water bath at 80°C for three days, a dry gel was obtained after cooling. Roast the dry gel in a muffle furnace: increase to 120°C at a heating rate of 3°C / min, hold for 30 minutes, increase to 400°C at a heating rate of 2°C / min, hold for 2 hours, and then at 10°C / min The heating rate was increased to 800℃, kept for 2h, and then cooled to room temperature with the furnace to obtain the perovskite catalyst La 0.9 K 0.1 CoO 3 , Grinding spare. Weigh 2g La 0.9 K 0.1 CoO 3 Pour 2ml of oleic acid into a 100ml beaker, sonicate for 20min, add ammonia until the pH of the solution is 6; magnetically stir at room temperature for 2h, sonicate for 10min; dry the mixture in an oven at 50℃ for 10h to obtain OA@La 0.9 K 0.1 CoO 3 . Weigh 2.5g OA@La 0.9 K 0.1 CoO 3 , 30mg K 2 S 2 O 8 Pour 3ml of styrene and 3ml styrene ...
Example Embodiment
[0018] Example two
[0019] La of this embodiment 0.9 K 0.1 CoO 3 Nanoparticle preparation and La 0.9 K 0.1 CoO 3 The nanoparticle modification steps are the same as in Example 1. The difference is: Weigh 1g PHMS and 1g D 4 Pour Vi into a 25ml beaker, sonicate for 10min, put in a stir bar, magnetically stir at room temperature for 1h, add 0.02g methylvinylsiloxane coordination platinum catalyst, continue stirring for 1h; add 0.2g PS@La to the above system 0.9 K 0.1 CoO 3 , Mix, and magnetically stir for 45min; pour the precursor fluid into the glass mold, put it into a constant temperature oven, set the temperature to 50℃, keep it for 4h, then heat it up to 80℃, keep it for 2h, take out the crosslinked body from the mould after cooling, and put it in Crystallizing dish to prepare for pyrolysis; put the cross-linked body into an alumina crucible and place it in the constant temperature zone of a high-temperature tube furnace; control the flow of Ar gas for 10min within the range of...
Example Embodiment
[0020] Example three
[0021] La of this embodiment 0.9 K 0.1 CoO 3 Nanoparticle preparation and La 0.9 K 0.1 CoO 3 The nanoparticle modification steps are the same as in Example 1. The difference is: Weigh 1g PHMS and 1g D 4 Pour Vi into a 25ml beaker, sonicate for 10min, put in a stir bar, magnetically stir at room temperature for 1h, add 0.02g methylvinylsiloxane coordination platinum catalyst, continue stirring for 1h; add 0.4g modified to the above system La 0.9 K 0.1 CoO 3 (PS@La 0.9 K 0.1 CoO 3 ), mix, and magnetically stir for 45min; pour the precursor fluid into the glass mold, put it into a constant temperature oven, set the temperature to 50℃, keep it for 4h, then heat it up to 80℃, keep it for 2h, take out the crosslinked body from the mould after cooling, and put it Put the cross-linked body into the alumina crucible and place it in the constant temperature zone of the high-temperature tube furnace; the flow rate of Ar10min is controlled within the range of 100-200sc...
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