Method for preparing methyl alcohol, formaldehyde and CO used for methane direct selective oxidation
A methanol and formaldehyde technology, applied in the field of methane, can solve the problems of catalyst system, complex reaction process, unreported literature and patents, easy deactivation of catalyst, etc., achieve low catalyst cost, improve carbon resource utilization, and high C1 oxidation The effect of material selectivity
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Embodiment 1
[0038] With BN (400mg) as catalyst, the reactor adopts continuous flow fixed bed reactor (inner diameter=7mm), P 总 =0.1MPa, P(CH 4 ) = P(O 2 )=32kPa, the total flow rate of the reaction mixture is 15.5mL / min, and when the reaction temperature is 550°C, the conversion rate of methane is 12%, the selectivity of methanol and formaldehyde is respectively 8%, 18%, and the total yield of the two is 3.1 %, CO, CO 2 The selectivities were 66% and 4%, respectively.
Embodiment 2
[0040] With BN (200mg) as catalyst, the reactor adopts continuous flow fixed bed reactor (inner diameter=7mm), P 总 =0.1MPa, P(CH 4 ) = P(O 2 ) = 32kPa, T 反 =600°C, when the total flow rate of the reaction mixture gas is 31.1mL / min, the methane conversion rate is 28%, the selectivity of methanol and formaldehyde are 5% and 4%, respectively, and the total yield of the two is 2.5%, CO, CO 2 The selectivities were 74% and 8%, respectively.
Embodiment 3
[0042] With BN (150mg) as catalyst, the reactor adopts continuous flow fixed bed reactor (inner diameter=5mm), P 总 =0.1MPa, T 反 =600°C, the total flow rate of the reaction mixture is 46.7mL / min, P(CH 4 )=20kPa, when CH 4 :O 2 When =1:2 (mol), the conversion rate of methane is 21%, the selectivity of methanol and formaldehyde is 5%, 16% respectively, and the total yield of the two is 4.4%, CO, CO 2 The selectivities were 72% and 5%, respectively.
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