共查询到18条相似文献,搜索用时 140 毫秒
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以油酸、二乙烯三胺、硫脲和氯化苄等为原料,合成出一种抗CO2腐蚀的咪唑啉季铵盐缓蚀剂,通过红外光谱法对其结构进行了表征,并利用静态失重法在模拟地层水的环境下对其缓蚀性能进行了研究。结果表明:红外谱图证明该实验成功地合成了咪唑啉季铵盐缓蚀剂;在高含CO2(PCO2=4.64MPa)的腐蚀介质中,当温度为90℃,缓蚀剂的用量为0.025%时,其缓蚀率可达88%以上;当温度的升高、腐蚀时间延长和矿化度增加时,缓蚀率均呈下降趋势。 相似文献
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一种油田注水缓蚀剂的合成及性能评价 总被引:2,自引:0,他引:2
合成缓蚀剂的最佳工艺条件为:油酸与二乙烯三胺的摩尔比为1:1.2,咪唑啉中间体的合成时间8h,环化温度为220℃,中间体与季铵化试剂DMS的摩尔比为1:1。采用静态失重法,对在最佳工艺条件下合成的咪唑啉季铵盐进行缓蚀性能评价。结果表明,当咪唑啉季铵盐缓蚀剂加量为1000mg/L时,就能达到很好的缓蚀性能;并且缓蚀剂的用量为500mg/L时,24h腐蚀速率为0.019mm/a,80℃时腐蚀速度为0.0214mm/a,将咪唑啉季铵盐以500mg/L与十二烷基硫酸钠(SDS)300mg/L、碘化钾(KI)1500mg/L、十二烷基苯磺酸钠(SDBS)200mg/L复配。其缓蚀率最高可达77.16%。 相似文献
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咪唑啉季铵盐缓蚀剂的制备及其性能研究 总被引:2,自引:0,他引:2
采用苯甲酸、三乙烯四胺为原料合成咪唑啉母体,用1-氯-3-苯基丙烷对其进行改性来制备咪唑啉季铵盐缓蚀剂。针对国内某含CO2油田的开发状况,动态失重法研究了咪唑啉季铵盐在6MPa下模拟油田水介质中对L80钢在不同缓蚀剂浓度、不同温度和不同时间下的缓蚀性能。结果表明:在试验条件下,随着温度的升高,缓蚀效率有明显的下降,到90℃时变化趋于平缓;在腐蚀反应初期,腐蚀速率很高,但随着腐蚀时间的延长,腐蚀速率明显下降,在较长的一段时间之后,缓蚀效率就几乎不再下降,而是稳定在一个较小的范围之内,所合成的缓蚀剂达到了预期的结果。 相似文献
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Kiran Kousar Thomas Ljungdahl Alexander Wetzel Michael Dowhyj Hans Oskarsson Alex S. Walton Monika S. Walczak Robert Lindsay 《Journal of surfactants and detergents》2020,23(1):225-234
An optimized one-pot recipe has been developed to synthesize a surfactant molecule, referred to as OMID, consisting of an imidazoline head group and aliphatic tail, which is an exemplar corrosion inhibitor for carbon steel in acidic solutions. As evidenced by gas chromatography, 1H and 13C nuclear magnetic resonance, and Fourier-transform infrared data, a high-purity product was achieved without the use of either a solvent or catalyst. Critical micelle concentration values and corrosion inhibition efficiencies ( η %) were determined in aqueous solutions of hydrochloric acid and sulfuric acid using surface tensiometry and linear polarization resistance measurements, respectively. Hydrolysis of the imidazoline head group as a function of pH (0–11) was explored with ultraviolet–visible absorption spectroscopy. In addition, N 1s and C 1s X-ray photoelectron spectroscopy data were acquired from both surface-adsorbed OMID and a multilayer of the imidazoline head group of OMID. These latter data are highly relevant to those attempting to understand OMID inhibition chemistry. 相似文献
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本研究以二乙烯三胺和油酸为原料,选择新型催化剂CM-01,以二甲苯为携水剂,合成HS-01酸性咪唑啉缓蚀剂。利用失重法考察了原料配比、合成时间、合成温度、催化剂对缓蚀效果的影响。在研究中发现,原料的配比和合成温度对咪唑啉产率有很大的影响,催化剂对反应时间有很大影响。实验结果表明,在油酸和二乙烯三胺的摩尔比为1:1.1,合成温度为140℃下,咪唑啉的转化率达到98%;研究发现加入一定量催化剂CM-01时,反应速率明显加快,合成时间明显缩短,同时生成的咪唑啉色泽得到明显改善。 相似文献
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Synthesis,Corrosion Inhibition Performance and Biodegradability of Novel Alkyl Hydroxyethyl Imidazoline Salts
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Hongqin Liu Jun Hu Xiaoze Zhou Dan Liu Baocai Xu Yawen Zhou 《Journal of surfactants and detergents》2015,18(6):1025-1031
New alkyl hydroxyethyl imidazoline salts were synthesized via a high pressure process with imidazoline and dimethyl carbonate, and their chemical structure were confirmed using mass spectral fragmentation and FTIR spectroscopic analysis. In addition, several quaternary ammonium salts with new counterions (formic acid, acetic acid and lactic acid) were also synthesized by ion exchange reaction of methyl carbonate quaternary ammoniums with the corresponding acids. These new compounds reduced the surface tension of water to a minimum value of approximately 27 mN m?1 at a concentration of 8.72 × 10?5 mol L?1. They also show efficient corrosion inhibition performances and could significantly inhibit the corrosion of mild steel in acid solutions. It was also found that the biological degradation of these imidazoline surfactants was greater than 98 % after 7 days. 相似文献
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分析了焦油车间蒸馏塔腐蚀的情况,腐蚀的主要原因是固定铵盐、Cl^-、游离碳及过量的水分。采取了在焦油加工前加入Na2CO3溶液等多种防腐措施后,取得了良好的效果。 相似文献