| 单词 | titanic acid |
| 释义 | > as lemmastitanic acid titanic acid n. [after French acide titanique (1823 in a French translation of the paper summarized in quot. 1823), itself after Swedish titansyra (H. Rose 1821, in Kongliga Vetenskaps-Academiens handlingar 239)] †(a) titanium dioxide, TiO2 (obsolete); (b) any of various (sometimes hypothetical) oxyacids containing titanium. ΚΠ 1823 Q. Jrnl. Sci. & Arts Oct. 97 Mr. Rose treats of the peroxide of titanium, (called by him, properly enough, titanic acid,) and its combinations with the alkalis and acids. 1842 W. T. Brande Dict. Sci., Lit. & Art 1241/1 The peroxide, or titanic acid, exists nearly pure in titanite, or rutilite. 1924 A. J. Allmand & H. J. T. Ellingham Princ. Appl. Electrochem. (ed. 2) xxi. 521 A pure alumina..is generally prepared by the Bayer process from bauxite, a hydrated oxide of iron and aluminium, containing some silica and titanic acid. 1934 Jrnl. Physical Chem. 38 513 Tetravalent titanium, like tin, is said to form two distinct acids: ortho- or alpha titanic acid and meta- or beta titanic acid. 1998 Industr. & Engin. Chem. Res. 37 3869 Sulfated titania catalysts were prepared by precipitation of titanic acid from titanium tetrachloride using aqueous ammonia, followed by impregnation with sulfuric acid. < as lemmas |
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