目前有关布朗斯特酸(Br(o)nsted)离子液体腐蚀的报道较少,且含水量对离子液体的酸性影响较大.利用电化学方法研究了Q235B低碳钢在不同含水量的布朗斯特酸离子液体[(CH2)45O3 HMIm][HSO4]中的腐蚀行为,采用扫描电子显微镜(SEM)、能谱仪(EDS)、核磁共振仪分析了Q235B钢电极电化学试验后的表面形貌及元素组成,讨论了其电化学作用机理.结果表明:随着离子液体含水量的增加,碳钢耐腐蚀性降低;此Br(o)nsted酸离子液体同时具有强酸性和低腐蚀性,易循环使用,有望取代具有强腐蚀性的传统酸,成为工业用酸性催化剂.
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