Spectroscopic Study of Polymerization of Ethylene Oxide by MgO and CaO Full article
Journal |
Journal of Applied Spectroscopy (English Translation of Zhurnal Prikladnoi Spektroskopii)
ISSN: 0021-9037 , E-ISSN: 1573-8647 |
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Output data | Year: 1992, Volume: 56, Number: 2, Pages: 130-135 Pages count : 6 DOI: 10.1007/BF00662264 | ||
Tags | Oxide; Polymerization; Ethylene; Analytical Chemistry; Molecular Structure | ||
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Abstract:
IR spectra of MgO and CaO before ethylene oxide (I) adsorption, after I adsorption at 26.6 Pa, after exposure to I vapor for 20 h, and following desorption of I at 373, 473, and 673 K were compared in order to explain the role of coordinatively unsatd. cations on the surface of the metal oxides in the mechanism of I polymn. I mols. initially are adsorbed on the oxide surface with formation of a weak coordination bond between the coordinatively unsatd. metal cations (M) and the free electron pair of the O atom of I. Next, the epoxide ring of the adsorbed I mols. is cleaved to form M-O-CH:CH2 structures, which act as chain-propagation centers. Catalytic activity of the oxides was increased significantly by raising the temp. of vacuum pretreatment from 773 to 973 K.
Cite:
Davydov A.A.
, Loiko V.E.
Spectroscopic Study of Polymerization of Ethylene Oxide by MgO and CaO
Journal of Applied Spectroscopy (English Translation of Zhurnal Prikladnoi Spektroskopii). 1992. V.56. N2. P.130-135. DOI: 10.1007/BF00662264 Scopus РИНЦ
Spectroscopic Study of Polymerization of Ethylene Oxide by MgO and CaO
Journal of Applied Spectroscopy (English Translation of Zhurnal Prikladnoi Spektroskopii). 1992. V.56. N2. P.130-135. DOI: 10.1007/BF00662264 Scopus РИНЦ
Original:
Давыдов А.А.
, Лойко В.Е.
Спектроскопическое изучение процесса полимеризации оксида этилена на MgO и CaO
Журнал прикладной спектроскопии. 1992. Т.56. №2. С.209-215. РИНЦ
Спектроскопическое изучение процесса полимеризации оксида этилена на MgO и CaO
Журнал прикладной спектроскопии. 1992. Т.56. №2. С.209-215. РИНЦ
Dates:
Submitted: | Jul 30, 1991 |
Published print: | Feb 1, 1992 |
Identifiers:
Scopus | 2-s2.0-34249843509 |
Elibrary | 30884515 |
OpenAlex | W2006657032 |
Citing:
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