منابع مشابه
A crossed molecular beam study on the reaction of boron atoms with methylacetylene and partially deuterated methylacetylene.
The reactions of ground-state boron atoms, B((2)P(j)), with methylacetylene, CH3CCH(X(1)A(1)), and its [D3]-substituted isotopomer, CD3CCH(X(1)A(1)), are studied under single collision conditions using the crossed molecular beam technique at collision energies of 21.6 and 21.9 kJ mol(-1), respectively. Utilizing the CD3CCH reactant, detailed information on the dynamics is obtained. The reaction...
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Gas phase polymerization of propylene was carried out in a semi-batch minireactor using a commercially supported Ziegler–Natta (ZN) catalyst. The influence of variables including monomer partial pressure, external electron donor, reaction temperature and time on the particle morphology and size distribution was investigated. Generally, more uniform fragmentation and particle densities were obta...
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The main objective of the present work was to synthesis polyamide 6 through anionic polymerization of ε-caprolactam in an internal mixer. The reaction time and the rheological properties of samples during the polymerization were studied. The samples were characterized by Thermo Gravimetry Analysis (TGA), Differential Scanning Calorimeter (DSC) and FT-IR spectrometer. The melt flow behavior and ...
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Highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (N) or of copolymerizing them with ethene (E) or propene (P). The polymers obtained show exciting structures and properties. E-N copolymers are industrially produced materials, with variable and high glass transitions depending on the wide range of their micr...
متن کاملReaction of the ethynyl radical, C2H, with methylacetylene, CH3CCH, under single collision conditions: Implications for astrochemistry
The reaction between the ethynyl radical, C2H (X S), and methylacetylene (X A18), which yields ethynylallene, pentadiyne, and butadiyne, has been studied at the density functional ~B3LYP/6-3111G**! and coupled cluster ~coupled-cluster single double perturbative triple/ cc-pVTZ! levels of theory. These results agree with data from crossed molecular beam experiments where ethynylallene ~10! and p...
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ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1966
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.69.10_1994