Synthesis of nitrogen-containing heterocyclic quaternary ammonium salt ionic liquid for corrosion inhibitors and its properties
YANG Xiao-yan1, WANG Ding-li2, PAN Li-yan3, YANG Xu-zhou4
1. College of Chemistry & Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China; 2. Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China; 3. The Research Institute of Engineering and Technology, PetroChina Xinjiang Oilfield Company, Karamay 834000, China; 4. Chengdu Tongneng Compressed Natural Gas Co., Ltd., Chengdu 610091, China
Abstract: Two kinds of quaternary ammonium salt corrosion inhibitors,1-(3-(benzylamino)-2-hydroxypropyl)quinoline-1-ammonium chloride (BZ-1-KL) and 1-(3-(benzyl(dodecyl)amino)-2-hydroxypropyl)quinoline-1-ammonium chloride (BZ-N-KL),are synthesized by ring-opening reaction and quaternization reaction with benzylamine,epichlorohydrin,1-bromododecane and quinoline as raw materials.The structures of products are characterized by infrared spectroscopy,and their corrosion inhibition effects are evaluated by static weight loss method and electrochemical analysis.The inhibition rates of BZ-1-KL and BZ-N-KL to P110 are 93.10% and 93.51%,respectively when the addition amount of BZ-1-KL and BZ-N-KL alone is 1.0% at 60℃.The adsorption type belongs to mixed adsorption,mainly chemical adsorption,which is consistent with the isotherm adsorption of Langmuir monolayer.The results from quantum chemistry calculation show that the energy gap difference between these two corrosion inhibitors is small,and the corrosion inhibition effect is mainly achieved by forming stable coordination bonds with iron through benzene rings,quinoline and other groups.
杨晓燕, 王鼎立, 潘丽艳, 阳绪洲. 含氮杂环季铵盐离子液体缓蚀剂的合成及其性能研究[J]. 现代化工, 2020, 40(6): 185-191.
YANG Xiao-yan, WANG Ding-li, PAN Li-yan, YANG Xu-zhou. Synthesis of nitrogen-containing heterocyclic quaternary ammonium salt ionic liquid for corrosion inhibitors and its properties. Modern Chemical Industry, 2020, 40(6): 185-191.
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