| 单词 | under reflux |
| 释义 | > as lemmasunder (also at) reflux 3. Chemistry. The condition, process, or action of refluxing; an instance of this. Also (concrete): the condensed vapour resulting from this process. Frequently in adverbial phrases, as under (also at) reflux: in refluxing conditions. ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > general vessels > fitted with a reflux condenser under (also at) reflux1886 the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > reflux refluxing?1771 reflux1886 1886 Jrnl. Amer. Chem. Soc. 8 74 After a few minutes boiling with reflux, the mixture is thrown into cold water. 1897 Jrnl. Chem. Soc. 71 1036 The operation is carried out under reflux. 1923 H. M. Bunbury Destructive Distillation of Wood xii. 213 It is sometimes necessary to make a total reflux, i.e. to return all the condensed vapours to the column. 1936 W. L. Nelson Petroleum Refinery Engin. xv. 278 The reflux flows down the column but it changes composition from plate to plate so that all of the material that is originally put into the top of the column as reflux is vaporized and returns to the product storage tank. 1968 Inorg. Syntheses 11 20 The mixture is stirred at reflux for 6 hours. 1992 Energy & Fuels 6 86/1 1,2,4-Trimethylbenzene required a 48-h reflux to completely oxidize all methyl groups. 1999 J. Ballinger Chem. Operator's Portable Handbk. xvii. 13 Reflux is simply vapor that has been recondensed into liquid and allowed to reenter the distillation tower. < as lemmas |
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