Method for separating and analyzing non-alkaline nitrogen compound in petroleum component
A technology of non-basic nitrogen and compounds, which is applied in the petroleum industry and the treatment of hydrocarbon oil, etc. It can solve the problems of loss of non-basic nitrogen compounds, troubles in qualitative and quantitative detection, high requirements for operating skills, etc., and achieve the effect of mild operating conditions
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[0031] Example 1
[0032] This embodiment provides a method for separating and analyzing non-basic nitrogen compounds in petroleum components. The specific steps are as follows:
[0033] First, add 10 grams of hydrorefined diesel oil with a total nitrogen content of 169 μg / g and 50 ml of dichloromethane into a 250 ml eggplant-shaped bottle, then add 0.5 g of silver tetrafluoroborate, and add 0.3 with a syringe under vigorous stirring. 1 ml of methyl iodide, the sealed eggplant-shaped flask was stirred for 24 hours at 25°C under dark conditions, and then 0.2 ml of methyl iodide was added and reacted for another 24 hours under the same conditions.
[0034] Then, the filtrate obtained by filtering the silver iodide produced by the reaction was volatilized in a nitrogen atmosphere to remove dichloromethane and excess methyl iodide, after adding 100 ml of n-hexane, sonicating for 1 minute, then centrifuging the insoluble part in it, and collecting the supernatant; Repeat the above separa...
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