相转移催化合成曼尼希碱酸化缓蚀剂的研究

Study on synthesis of Mannich base for acidizing corrosion inhibitor using phase transfer catalysts

以苯乙酮、甲醛、二乙胺为原料,在水相中经相转移催化合成曼尼希碱酸化缓蚀剂。采用静态挂片失重法,在模拟油井酸化的腐蚀环境下进行缓蚀性能评价,确定了最佳合成条件:n(酮)∶n(醛)∶n(胺)=3∶4∶3,合成反应温度100℃,反应时间9h;最佳的相转移催化剂为苄基三乙基氯化铵,最佳用量为摩尔分数1.15%。

Acidizing corrosion inhibitor of Mannich base was synthesized by Mannich reaction with acetophenone, formaldehyde, diethylamine in water, and benzyltriethyl ammonium chloride （BTAC） as phase-transfer-catalyst（PTC）. The evalution of the corrosion behaviour was studied by using the weightlessness method, through orthogonal experiments. The mole raio of raw material： cinnamalde- hydeacetophenone ： aniline= 3 ： 4 ： 3,temperature：100 ℃ ,time：9 h. BTAC is optimum phase transfer catalysts,dosage is 1.15%.