High‐Pressure Photoionization Mass Spectrometry. Reactions of Alkane and Cycloalkane Molecular Ions with Water Vapor at Thermal Kinetic Energies

1970 ◽  
Vol 53 (7) ◽  
pp. 2601-2604 ◽  
Author(s):  
L. Wayne Sieck ◽  
Stuart K. Searles
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Water Vapor ◽  
Molecular Ions ◽  
Photoionization Mass Spectrometry

scholarly journals Direct time-resolved detection and quantification of key reactive intermediates in diethyl ether oxidation at T = 450–600 K

2020 ◽  
Vol 22 (42) ◽  
pp. 24649-24661
Author(s):  
Maria Demireva ◽  
Kendrew Au ◽  
Leonid Sheps
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Diethyl Ether ◽  
Vacuum Ultraviolet ◽  
Reactive Intermediates ◽  
Reaction Intermediates ◽  
Time Resolved ◽  
Photoionization Mass Spectrometry ◽  
Ionization Radiation ◽  
Detection And Quantification

High-pressure multiplexed photoionization mass spectrometry (MPIMS) with tunable vacuum ultraviolet (VUV) ionization radiation from the Lawrence Berkeley Labs Advanced Light Source is used to characterize and quantify key reaction intermediates in the oxidation of diethyl ether (DEE).

Ion–molecule reactions in dimethylsulfoxide by high pressure photoionization mass spectrometry

1980 ◽  
Vol 58 (4) ◽  
pp. 376-380 ◽  
Author(s):  
John A. Stone ◽  
Margaret S. Lin
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Photon Energy ◽  
Rate Constant ◽  
Pressure Range ◽  
Low Pressure ◽  
Photoionization Mass Spectrometry ◽  
Ion Molecule Reactions

Dimethylsulfoxide (DMSO) has been photoionized at 10.0 and 11.7 eV over the pressure range 0.3–210 mTorr. The rate constant for the disappearance of DMSO+ is 1.0 × 10−9 cm3 molecule−1 s−1, independent of photon energy. The major products at low pressure are CH3SO(CH3SO)CH3+ and CH3SOHCH3+ while at high pressure the ion series (DMSO)nH+ predominates with n ≤ 5. In experiments with mixtures of DMSO and water or methanol very little mixed solvation of the proton was observed although isotopic D/H exchange between D2O and (DMSO)2H+ is facile.

A high-pressure reactor coupled to synchrotron radiation photoionization mass spectrometry

2020 ◽  
Vol 91 (9) ◽  
pp. 093102
Author(s):  
Rui You ◽  
Shengsheng Yu ◽  
Jiuzhong Yang ◽  
Yang Pan ◽  
Weixin Huang
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Synchrotron Radiation ◽  
Photoionization Mass Spectrometry
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