Organic Inhibitors of Corrosion, Aliphatic Amines
Organic Inhibitors of Corrosion, Aliphatic Amines
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DOI:
10.1021/ie50314a004
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发表时间:
1936-02
影响因子:
--
通讯作者:
C. Mann;B. E. Lauer;Clifford T. Hultin
中科院分区:
文献类型:
--
作者:
C. Mann;B. E. Lauer;Clifford T. Hultin
| VER since Speller (28) reported the use of hydrochloric acid containing an organic inhibitor for cleaning out badly scaled water pipes, there has been an increasing interest in the study of organic inhibitors of corrosion. As early as 1872 Maran-goni and Stephanelli (21) stated that essential oils were effective in reducing the speed of action of acids on iron. One patent (7A) in 1919 covers the use of crude anthracene and oil residues, and another in 1920 (17) pertains to the use of extract of sumac for pickling baths. The use of aldehydes (6, 7, 13, 16, 18), organic bases (10, 19, 22, 23, 26, 27, 32), and organic compounds containing nitrogen, arsenic, phosphorus, sulfur, selenium, and other complex synthetic or natural organic substances and by-products (2, 5, 8, 11, 12, 25, 29, 30, 31, and some seventy United States, British, and German patents) have been proposed as inhibitors or have been inves-tigated.A number of explanationshave been offered as to the mechanism of protection of iron against the corroding action of acids by organic inhibitors. It is generally agreed that these inhibitors prevent thedischarge of hydrogen on the cathodic areas of iron, thus eliminating corrosion. In this respect they behave like catalysts as suggested by Speller (27). Speller (27), Rhodes and Kuhn (23), and others (S, 9, 14, 32) suggest that the inhibitors form a blanketing layer or film which prevents the discharge of the hydrogen. Such a layer will form if the inhibitor is a properly charged colloid according to Isgarishev and Bergmann (19), R. Audubert (4), Chappell, Roetheli, and McCarthy (9), and Warner (32),