| 单词 | palladium black |
| 释义 | > as lemmaspalladium black palladium black n. a black powder consisting of finely divided palladium, used as a catalyst (cf. platinum black n. at platinum n. and adj. Compounds 2). ΚΠ 1868 Proc. Royal Soc. 1867–8 16 426 Even when heated, and afterwards exposed to an atmosphere of hydrogen in the usual manner, the palladium black so prepared condensed no sensible quantity of that gas. 1936 S. Glasstone Recent Adv. Gen. Chem. iv. 177 The catalytic decomposition of sodium formate by palladium black. 1999 Investigative Ophthalmol. & Visual Sci. (Electronic ed.) 40 2427 The reaction mixture consisted of 30% formaldehyde, 98% formic acid.., and freshly prepared palladium black. < as lemmas |
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