Acid liquor corrosion inhibitor for inhibiting corrosion of hydrochloric acid solution on carbon steel and preparation method thereof
A hydrochloric acid solution and corrosion inhibitor technology, applied in earthwork drilling, wellbore/well parts, organic chemistry, etc., can solve the problems of poor biodegradability of products, difficult separation of products, high toxicity of solvents, etc., and achieve easy product purification, The effect of simple preparation method and convenient solvent recovery
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Embodiment 1
[0018] First, 5g bromododecane (C 12 h 25 Br) was dissolved in 60mL DMF solvent and added to a 100mL three-necked flask, and then sequentially added sodium azide solid (NaN 3 ) at 60°C under low-speed stirring for 20 hours, then take it out, add 150 mL of ethyl acetate / water solution with a volume ratio of 1:1.5 (V / V), extract twice, take the upper organic phase, add 5 g of anhydrous magnesium sulfate, dry it, and filter it to obtain The liquid was rotary evaporated at a pressure of -0.1MPa and a temperature of 65°C to obtain a light yellow liquid product azidodecane (C 12 h 25 N 3 ), the yields at different molar ratios were 75.5, 79.6, 82.3, 85.8%, respectively.
Embodiment 2
[0020] First, 5g bromotetradecane (C 14 h 29 Br) was dissolved in 60mL DMF solvent and added to a 100mL three-necked flask, and then sequentially added sodium azide solid (NaN 3 ) at 60°C under low-speed stirring for 20 hours, then take it out, add 150 mL of ethyl acetate / water solution with a volume ratio of 1:1.5 (V / V), extract twice, take the upper organic phase, add 5 g of anhydrous magnesium sulfate, dry it, and filter it to obtain The liquid was rotary evaporated at a pressure of -0.1MPa and a temperature of 65°C to obtain a light yellow liquid product azidotetradecane (C 14 h 29 N 3 ), the yields at different molar ratios were 74.9, 79.1, 81.7, 84.6%, respectively.
Embodiment 3
[0022] First 5g hexadecane bromide (C 16 h 33 Br) was dissolved in 60mL DMF solvent and added to a 100mL three-necked flask, and then sequentially added sodium azide solid (NaN 3 ) at 60°C under low-speed stirring for 20 hours, then take it out, add 150 mL of ethyl acetate / water solution with a volume ratio of 1:1.5 (V / V), extract twice, take the upper organic phase, add 5 g of anhydrous magnesium sulfate, dry it, and filter it to obtain The liquid was rotary evaporated at a pressure of -0.1MPa and a temperature of 65°C to obtain a light yellow liquid product azide hexadecane (C 16 h 29 N 3 ), the yields at different molar ratios were 73.6, 78.8, 81.2, 84.3%, respectively.
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