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环烷酸又名萘酸,属羧酸类化合物,是石油工业中的副产品。由于它的来源丰富,价格低廉,没有毒性,被广泛地用于生产催化剂、表面活性剂、油漆催干剂等。在稀土工业中,国外用环烷酸分离稀土元素的研究早有报导,国内也从七十年代起用于提取高纯氧化钇。环烷酸是多组分的混合物,一般属五元环的饱和一元酸,通式为CnH_(2n-1)COOH、结构式为:
Naphthenic acid, also known as naphthenic acid, is a carboxylic acid compound, is a by-product of the oil industry. Because of its rich source, low price, no toxicity, is widely used in the production of catalysts, surfactants, paint driers and so on. In the rare earth industry, the overseas studies on the separation of rare earth elements with naphthenic acid have long been reported, and the domestic research on the extraction of high purity yttrium oxide has been carried out since 1970s. Naphthenic acid is a multi-component mixture, usually a five-membered saturated monobasic acid, the general formula CnH_ (2n-1) COOH, the formula is: