| 单词 | ziegler-natta catalysis |
| 释义 | > as lemmasZiegler-Natta catalysis Used attributively to designate any catalyst of the class including the Ziegler catalyst, consisting in general of a transition metal halide and a non-transition metal organic derivative, and used with any olefin monomer. So Ziegler-Natta catalysis. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to that which affects reaction > of or relating to catalysis > of or relating to named catalysts Ziegler1957 Ziegler-Natta1965 1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. x. 382 Whereas the ionic catalysts appear to be capable of general use with any unsaturated molecule,..Ziegler-Natta catalysts are usually employed in the polymerization of olefinic hydrocarbons—notably, ethylene and proplyene. 1974 Encycl. Brit. Micropædia X. 880/3 The Ziegler-Natta catalysts include many mixtures of halides of transition metals, especially titanium, chromium, vanadium, and zirconium, with organic derivatives of nontransition metals, particularly alkyl aluminium compounds. 1980 M. Orchin et al. Vocab. Org. Chem. xiv. 535 It has been suggested that Ziegler-Natta catalysis may involve metal-carbene formation. < as lemmas |
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