Preparation method and use of modified carbon black-LaMnO3 covalent composite material
A composite material and modified carbon black technology, applied in chemical instruments and methods, physical/chemical process catalysts, structural parts, etc., can solve the problems of low activity, insufficient durability and high price, and achieve low process cost and convenient operation. , the effect of reducing the cost of raw materials
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Embodiment 1
[0022] Preparation of modified carbon black-LaMnO with a composition ratio of 1:3 3 Covalent composites.
[0023] (1) Modified pretreatment of carbon carrier materials: using high-temperature graphitization + concentrated nitric acid + concentrated ammonia water for three consecutive steps of pretreatment; the first step is to put the carbon material (CB) into a self-made graphite tank and seal it, and then put the graphite The tank is sent to a large graphitization furnace at 2600°C under a protective gas argon atmosphere, kept for 1 hour and then cooled to room temperature with the furnace to obtain a highly graphitized carbon material (GCB); in the second step, weigh 10g of GCB and add it to a three-necked flask , Add 300ml of concentrated nitric acid and condense and reflux for 10h under the condition of 140°C oil bath. Cool the reaction solution, filter it, wash it with deionized water until it is neutral, and dry it in vacuum at 80°C; the third step is to add 300ml~500m...
Embodiment 2
[0028] Preparation of modified carbon black-LaMnO with a composition ratio of 2:3 3 covalent composite
[0029] (1) Modified pretreatment of carbon carrier materials: using high-temperature graphitization + concentrated nitric acid + concentrated ammonia water for three consecutive steps of pretreatment; the first step is to put the carbon material (CB) into a self-made graphite tank and seal it, and then put the graphite The tank is sent to a large graphitization furnace at 2600°C under a protective gas argon atmosphere, kept for 1 hour and then cooled to room temperature with the furnace to obtain a highly graphitized carbon material (GCB); in the second step, weigh 10g of GCB and add it to a three-necked flask , 300ml of concentrated nitric acid was condensed and refluxed for 10h in an oil bath at 140°C. Cool the reaction solution, filter it, wash it with deionized water until it is neutral, and dry it in vacuum at 80°C; the third step is to add 300ml~500ml of concentrated...
Embodiment 3
[0034] Preparation of modified carbon black-LaMnO with a composition ratio of 3:3 3 covalent composite
[0035] (1) Modified pretreatment of carbon carrier materials: using high-temperature graphitization + concentrated nitric acid + concentrated ammonia water for three consecutive steps of pretreatment; the first step is to put the carbon material (CB) into a self-made graphite tank and seal it, and then put the graphite The tank is sent to a large graphitization furnace at 2600°C under a protective gas argon atmosphere, kept for 1 hour, and then cooled to room temperature with the furnace to obtain a highly graphitized carbon material (GCB for short); the second step is to weigh 10g of GCB and add it to a three-necked flask In, add 300ml of concentrated nitric acid and condense and reflux for 10h under the condition of 140°C oil bath. Cool the reaction solution, filter it, wash it with deionized water until it is neutral, and dry it in vacuum at 80°C; the third step is to a...
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