论文部分内容阅读
(一)硅有机物的发展及其工业意义硅有三种同位素(28,29,30)。自然界中的分布量仅次于氧而居第二位。它构成地壳的27%,并且为机体生存的必要组成之一。还在1811年已经制得了硅:SiF_4+Na→Si+4NaF在1825年首先制得四氯化矽:Si+2Cl_2(?)SiCl_4在1842年获得硅有机物:SiCl_4+4C_2H_5OH→Si(OC_2H_5)_4+4HCl到1890年的这一期间合成了某些硅化物 R_nSiX_(4-n)
(A) the development of silicon and its industrial significance Silicon has three isotopes (28,29,30). The distribution of the natural world ranks second only to oxygen. It constitutes 27% of the crust and is one of the necessary components of the body’s survival. Silicon was also made in 1811: SiF 4 + Na → Si + 4NaF Silicon tetrachloride was first prepared in 1825: Si + 2 Cl 2 SiCl 4 Si 4 O 4 was obtained in 1842 by SiCl 4 + 4C 2 H 5 O → Si (OC 2 H 5) 4 + 4HCl Some silicides R_nSiX_ (4-n) were synthesized during this period of 1890