单词 | butene |
释义 | butenen. Chemistry. Each of four isomeric gaseous alkenes, having the general formula C4H8, which are used as reagents in chemical synthesis, esp. in the production of polymers; also called butylene.The isomers of butene are: 1-butene or but-1-ene (CH2=CHCH2CH3); 2-butene or but-2-ene (cis and trans isomers) (CH3CH=CHCH3); and iso-butene (2-methyl-prop-1-ene) (CH3CH2CH=CH2).The identity of the substance referred to in quot. 1851 is not certain. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > other hydrocarbons marsh butterc1450 asphaltene1837 petrolene1837 retinol1837 melene1848 butene1851 peucyl1857 nicotyl1860 bog-butter1863 melissene1867 bitumene1868 tolene1868 valylene1868 thallene1872 melissylene1884 allylene1889 dicyclopentadiene1904 kerogen1906 perylene1910 oestrane1933 dodecahedrane1964 prismane1964 the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkenes > straight-chained, by number of carbon atoms > four butene1851 tetrylene1857 butylene1877 1851 Q. Jrnl. Chem. Soc. 3 126 C8H10. Marsh-gas of valeric acid, (Butene). 1877 H. Watts Fownes's Man. Elem. Chem. II. 57 Butene or Butylene—of this hydro-carbon there are three modifications..Normal butene, Pseudobutene, Isobutene. 1934 Science New Ser. 19 Jan. 46/1 The dehydration of a nonyl alcohol..gave instead a pentene (trimethylethylene) and a butene (isobutylene). 1992 Sci. Amer. Apr. 87/2 (caption) Two solid acid catalysts..have pores that are similar in size to the diameter of two isomers of butene: 2-methylpropene (green and white), which is commercially valuable, and 1-butene..which is less so. 2014 Accts. Chem Res. 47 2617/2 The excess of butenes allows them to bond preferentially to the metal sites over 1,3-butadiene. This entry has been updated (OED Third Edition, September 2018; most recently modified version published online December 2021). < |
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