ChemInform Abstract: RAMAN SPECTRA OF THE DIMETHYL ETHER ... HYDROGEN CHLORIDE HYDROGEN-BONDED COMPLEX IN THE GAS PHASE

1979 ◽  
Vol 10 (28) ◽  
Author(s):  
B. DESBAT ◽  
J. C. LASSEGUES
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Raman Spectra ◽  
Dimethyl Ether ◽  
Hydrogen Bonded

Thermodynamics and Spectroscopy of the Hydrogen Bonded Complex Formed between Hydrogen (Deuterium) Chloride and Dimethyl Ether in the Gas Phase by Raman Scattering

1974 ◽  
Vol 52 (4) ◽  
pp. 674-677 ◽  
Author(s):  
A. S. Gilbert ◽  
H. J. Bernstein
Keyword(s):  
Raman Scattering ◽  
Equilibrium Constant ◽  
Gas Phase ◽  
Dimethyl Ether ◽  
Deuterium Chloride ◽  
Integrated Intensity ◽  
Hydrogen Deuterium ◽  
Hydrogen Bonded

The equilibrium constant Kp has been obtained for the complex [Formula: see text] over a range of temperatures between 22 and 132 °C by monitoring the integrated intensity of the Raman scattered band from unassociated DCl in a mixture with dimethyl ether. By applying the relation In KP = −ΔH/RT + ΔS/R the quantities ΔH, ΔG, and ΔS have been evaluated.Broad νCl–H and νCl–D complex bands have been observed and are found to be polarized.

scholarly journals The role of radiolysis in the modelling of C2H4O2 isomers and dimethyl ether in cold dark clouds

2020 ◽  
Vol 500 (3) ◽  
pp. 3414-3424
Author(s):  
Alec Paulive ◽  
Christopher N Shingledecker ◽  
Eric Herbst
Keyword(s):  
Gas Phase ◽  
Dimethyl Ether ◽  
Recent Observation ◽  
Cosmic Ray ◽  
Thermal Method ◽  
Dark Clouds ◽  
Ice Surface ◽  
Dust Grain ◽  
Complex Organic

ABSTRACT Complex organic molecules (COMs) have been detected in a variety of interstellar sources. The abundances of these COMs in warming sources can be explained by syntheses linked to increasing temperatures and densities, allowing quasi-thermal chemical reactions to occur rapidly enough to produce observable amounts of COMs, both in the gas phase, and upon dust grain ice mantles. The COMs produced on grains then become gaseous as the temperature increases sufficiently to allow their thermal desorption. The recent observation of gaseous COMs in cold sources has not been fully explained by these gas-phase and dust grain production routes. Radiolysis chemistry is a possible non-thermal method of producing COMs in cold dark clouds. This new method greatly increases the modelled abundance of selected COMs upon the ice surface and within the ice mantle due to excitation and ionization events from cosmic ray bombardment. We examine the effect of radiolysis on three C2H4O2 isomers – methyl formate (HCOOCH3), glycolaldehyde (HCOCH2OH), and acetic acid (CH3COOH) – and a chemically similar molecule, dimethyl ether (CH3OCH3), in cold dark clouds. We then compare our modelled gaseous abundances with observed abundances in TMC-1, L1689B, and B1-b.

Understanding water structure from Raman spectra of isotopic substitution H2O/D2O up to 573 K

2017 ◽  
Vol 19 (32) ◽  
pp. 21540-21547 ◽  
Author(s):  
Qingcheng Hu ◽  
Haiwen Zhao ◽  
Shunli Ouyang
Keyword(s):  
Hydrogen Bonding ◽  
Raman Spectra ◽  
Water Structure ◽  
Free Water ◽  
Isotopic Substitution ◽  
Structure Model ◽  
Single Donor ◽  
Hydrogen Bonded

The OH/OD stretch band features on Raman spectra of isotopic substitution H2O/D2O at temperatures up to 573 K are correlated with a multi-structure model that water has five dominant hydrogen bonding configurations: tetrahedral, deformed tetrahedral, single donor, single hydrogen bonded water and free water.

scholarly journals Reversible deactivation of γ-alumina by steam in the gas-phase dehydration of methanol to dimethyl ether

2019 ◽  
Vol 119 ◽  
pp. 22-27 ◽  
Author(s):  
Jurriaan Boon ◽  
Jasper van Kampen ◽  
Roelof Hoogendoorn ◽  
Stefania Tanase ◽  
Frans P.F. van Berkel ◽  
...  
Keyword(s):  
Gas Phase ◽  
Dimethyl Ether ◽  
Reversible Deactivation

The gas-phase reaction of ClONO2 with hydrogen chloride

1987 ◽  
Vol 5 (1) ◽  
Author(s):  
Roger Atkinson ◽  
SaraM. Aschmann ◽  
ErnestoC. Tuazon ◽  
MarkA. Goodman ◽  
ArthurM. Winer
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Phase Reaction ◽  
Gas Phase Reaction

scholarly journals The kinetics of the hydrogen chloride oxidation

2013 ◽  
Vol 78 (12) ◽  
pp. 2115-2130 ◽  
Author(s):  
Martinez Gonzalez ◽  
Tanja Vidakovic-Koch ◽  
Rafael Kuwertz ◽  
Ulrich Kunz ◽  
Thomas Turek ◽  
...  
Keyword(s):  
Kinetic Parameters ◽  
Gas Phase ◽  
Hydrogen Chloride ◽  
Reaction Order ◽  
Membrane Electrode ◽  
Polarization Data ◽  
Rate Determining Step ◽  
Electrode Assemblies ◽  
Apparent Kinetic Parameters ◽  
Kinetics Of

Hydrogen chloride (HCl) oxidation has been investigated on technical membrane electrode assemblies in a cyclone flow cell. Influence of Nafion loading, temperature and hydrogen chloride mole fraction in the gas phase has been studied. The apparent kinetic parameters like reaction order with respect to HCl, Tafel slope and activation energy have been determined from polarization data. The apparent kinetic parameters suggest that the recombination of adsorbed Cl intermediate is the rate determining step.

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