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考察了对甲苯磺酸、磷钼酸和对甲苯磺酸-磷钼酸复配催化剂在醋酸丁酯合成反应中的催化性能以及对304不锈钢的腐蚀性能,初步推断了磷钼酸的缓蚀机理。实验结果表明,对甲苯磺酸和磷钼酸均具有较好的催化活性,两者复配可起到协同催化作用,可达到硫酸的催化活性;磷钼酸是一种性能优良的阳极型缓蚀剂,在ω(p-C6H5SO3H)=0 5%～1 5%、ω(CH3COOH)=46 0%、ω(HPMo)=0 1%～0 2%,温度100～120℃的条件下,腐蚀速度小于0 005g/m2·h。
The catalytic performance of p-toluenesulfonic acid, phosphomolybdic acid and p-toluenesulfonic acid-phosphomolybdic acid complex catalyst in the synthesis of butyl acetate and the corrosion of 304 stainless steel were investigated. The corrosion inhibition mechanism of phosphomolybdic acid . The experimental results show that both p-toluenesulfonic acid and phosphomolybdic acid have good catalytic activity, the two compounds can play a synergistic catalysis, which can achieve the catalytic activity of sulfuric acid; phosphomolybdic acid is an excellent anode retardation The etchant is prepared under the conditions of ω (p-C6H5SO3H) = 0 5% -1 5%, ω (CH3COOH) = 46 0%, ω (HPMo) = 0 1% ~ 0 2% Corrosion rate is less than 0 005g / m2 · h.