Ion-Molecule Reactions in Ethylene Oxide

Minoru KUMAKURA; Akihiro ITO; Toshio SUGIURA

doi:10.5702/massspec1953.22.61

Minoru KUMAKURA, Akihiro ITO, Toshio SUGIURA

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JOURNAL FREE ACCESS

1974 Volume 22 Issue 1 Pages 61-70

DOI https://doi.org/10.5702/massspec1953.22.61

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Published: March 31, 1974 Received: February 27, 1974 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: June 28, 2010 Reason for correction: - Correction: AFFILIATION Details: Wrong :
1) Japan Atomic Energy Research Institute, Takasaki Radiation Chemistry Research Establishment(1233, Watanuki Takusaki,.Gumma, Japan)
2) Japan Atomic Energy Research Institute, Osaka Laboratory for Radiation Chemistry(25, Miiminami, Neyagawa, Osaka, Japan)

Right :
1) Japan Atomic Energy Research Institute, Takasaki Radiation Chemistry Research Establishment
2) Japan Atomic Energy Research Institute, Osaka Laboratory for Radiation Chemistry

Date of correction: June 28, 2010 Reason for correction: - Correction: CITATION Details: Wrong : E
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Abstract

The ion-molecule reactions in the systems including ethylene oxide have been studied at thermal ion energies by means of the ion trapping technique using a modified time-of-flight mass spectrometer. Details of the ion source constructed in this laboratory have been described. The performance of this modified ion source has been examined by the measurement of the ion-molecule reactions in methane. The following major ion-molecule reactions have been identified to be occurring in ethylene oxide, with the measurements of the ionization efficiency curves using the RPD technique for determination of the precursors in the reactions. (All rate constants in cm³/molecule.sec.) C2H4O+C2H4O→C2H5O++C2H3O, k=1.45×10-¹⁰, CHO++C2H4O→C2H5O++CO, k=2.05×10-⁹, CH3++C2H4O+→C2H3O++CH4, k=2.10×10-¹⁰.By the experiments using simple hydrocarbons including ethylene-d4as the additive, the sequence of the reactivity for the protonated ion formation and the charge transfer reactions from simple hydrocarbon ions to the ethylene oxide molecule have also been studied.

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