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| 1 | Combined Use of Co-immobilized Lysozyme and Lipase and Chemical Inhibitors in Circulating Cooling Water System显示文摘In order to improve the stability and corrosion inhibition performance of bioenzyme, lipase and lsozyme were co-immobilized on the mesoporous molecular sieve MCM-41 by the adsorption method. Then the immobilized enzymes were combined with amino trimethylene phosphonic acid and polyaspartic acid to prevent corrosion caused by circulating cooling water. The weight-loss method and electrochemical techniques were used to evaluate the performance of composite inhibitors. The co-immobilized lysozyme and lipase achieved good inhibition effects. After they were combined with amino trimethylene phosphonic acid and polyaspartic acid, the corrosion inhibition properties were further improved. The inhibition efficiency was promoted to 94.4%. During the corrosion inhibition process, the immobilized enzymes played an important role. The addition of corrosion inhibitor could inhibit the anodic dissolution and cathodic hydrogen evolution process of carbon steel at the same time. The adsorption of co-immobilized lysozyme and lipase composite inhibitor on the steel surface was a joint action involving physical adsorption and chemical adsorption. | Jiang Guofei Chen Xiaorui Lu Xin Liu Fang Wang Yongqiang Zhao Chaocheng Sun Juan | 2018 | China Petroleum Processing & Petrochemical Technology2018，20，4： | 1 |
| 2 | 新型油酸基咪唑啉酰胺对A3碳钢的缓蚀性能研究显示文摘针对高酸原油加工中分馏塔顶循环回流(简称顶循)系统腐蚀加剧的现状,对自合成的新型油酸基咪唑啉酰胺(EYP)的缓蚀性能进行了研究。采用失重法评价缓蚀剂EYP在模拟顶循油体系中的缓蚀性能,考察了EYP的添加量和腐蚀体系温度对其缓蚀效率的影响,并采用电化学方法对缓蚀机理进行了探讨,采用SEM对碳钢表面的腐蚀形貌进行了分析。结果表明:EYP在顶循油模拟体系中对A3碳钢具有优良的缓蚀性能;随着腐蚀体系中EYP添加量的增大,缓蚀效率先增大然后略有降低;温度对EYP的缓蚀效率影响较小,随着温度升高,EYP的缓蚀效率略有降低;EYP在金属表面的吸附包括化学吸附和物理吸附,呈一种有序化的状态;EYP是一种能同时抑制阴极和阳极反应的高效'混合型缓蚀剂'。 | 张磊 项玉芝 周玉路 夏道宏 | 2016 | 石油炼制与化工2016，47，5： | 1 |
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