condemn
发表于 2025-3-23 12:17:30
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政府
发表于 2025-3-23 14:41:21
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知道
发表于 2025-3-23 20:10:10
Activation Reactions of Cp, ZrCl, and Cp, ZrMe, with Aluminium Alkyl Type Cocatalysts Studied by , Fated by . FTIR spectroscopy. The studies have been performed in a cell that allows continuous monitoring of the reactions and stepwise additions of reactants. Most bands of the zirconocenes are unaffected by the reactions, but a strong Cp band at 803-822 cm. was found to give distinct information on
胆小鬼
发表于 2025-3-24 00:18:02
Single Component Zirconocene Catalysts for the Stereospecific Polymerization of MMAghly isotactic poly(methyl methacrylate) (PMMA) with Me.C(Cp)(Ind)Zr(Me)(thf).BPh.. 1 as a catalyst, and syndiotactic PMMA at low temperatures with Me.C(Cp).Zr(Me)(thf).BPh.. 2. Similar cationic complexes with other ligands have been found to be inactive for MMA polymerization under similar reaction
adroit
发表于 2025-3-24 02:34:00
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IDEAS
发表于 2025-3-24 07:05:01
Phosphinoalkyl-Substituted Cyclopentadienyl Chromium Catalysts for the Oligomerization of Ethyleneess attention and have never found commercial use. Reported here is a new family of phosphinoalkyl-substituted cyclopentadienyl chromium compounds which, after activation with methylalumoxane, give highly active homogeneous catalysts for the oligomerization and polymerization of ethylene whereby the
杀死
发表于 2025-3-24 13:53:02
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联邦
发表于 2025-3-24 18:29:45
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Commonplace
发表于 2025-3-24 21:53:49
Rare Earth Half-Sandwich Catalysts for the Homo- and Copolymerization of Ethylene and Styreneesis of the alkyl complexes , easily accessible by the reaction of the amino-cyclopentadiene with , was developed. The dimeric lanthanide hydrido complexes are highly fluxional involving THF dissociation and cis-trans isomerization of t
languid
发表于 2025-3-25 01:44:12
The New Revolutionary Development Of Catalysis As The Driving Force For The Commercial Dynamic Succest families in the fifties activated a process that entered in a dynamic revolutionary development, still very much in progress in the present days, after having been kept quiet and at a very low profile for two decades. Their early development, in spite of the bright promises, was more difficult th