Atmospheric Reactions Involving Hydrocarbons: Long Path‐FTIR Studies

Niki, H.; Maker, P. D.

doi:10.1002/9780470133453.ch2

Cited by 7 publications

References 131 publications

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Vibrational Spectroscopy in the Automotive Industry

Carter

Weber

2001

Handbook of Vibrational Spectroscopy

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Vibrational spectroscopy forms the basis for many of the analytical tools used in the automotive industry. These tools are divided naturally into those designed for gas‐phase studies and those for condensed‐matter investigations. The gas‐phase infrared measurements include speciation and time‐resolved studies of the chemistry of smog formation and the chemistry of hydrofluorocarbons and related compounds. The section concludes with a novel account of using gas‐phase Raman to test seals in micromachined devices. The condensed‐matter studies include catalyst materials, paints and other thin‐film coatings, plastics, and friction and wear interfaces and are among the topics discussed in this section. Improved functionality and/or durability of materials motivate most of these studies, but the identification for recycling purposes is also an issue. The authors have a combined 50 years of experience applying vibrational spectroscopy to a wide variety of problems. The topics chosen for discussion are focused on those investigations in which the authors or their colleagues have been directly involved. Thus, the review is not meant to be comprehensive.

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Vibrational Spectroscopy in the Automotive Industry

Carter

Weber

2001

Handbook of Vibrational Spectroscopy

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ChemInform Abstract: Atmospheric Reactions Involving Hydrocarbons: Long Path‐FTIR Studies

Niki

Maker

1991

ChemInform

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FTIR spectroscopic study of the Cl‐ and Br‐atom initiated oxidation of ethene

Yarwood

Peng

Niki

1992

Int J of Chemical Kinetics

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The reaction mechanism of the halogen (C1 and Br)-atom initiated oxidation of C2Hd was studied using the long path FTIR spectroscopic method in 700 torr of air at 296 ? 2 K. Among the major halogen-containing products were X -CHzCHO, X-CHzCHzOH, and X-CH~CHZOOH (X = C1 or Br) which were shown to be formed via the self-reaction of the X-CHZCHZOO radicals, i.e., 2X-CH2CH200 + 2X-CH2CH20 + 0 2 ; (a) 2X-CHZCHZOO + X-CHzCHO + X-CH2CH20H + 0 2 and (b) followed by X-CHzCHzO + 0 2 + X-CH2CHO + HOZ and X-CHZCH~OO + H02 + X-CH2CHz00H + 02. From the observed yields of X-CH2CHO and X-CHzCHzOH the branching ratios for reactions (a) and (b) were determined to be k./kb = 1.35 2 0.07(20) for both X = C1 and Br.'In addition, the 02-dependence of the rate constant for the Br + CzH4 reaction was determined by the relative rate technique as a function of 0 2 partial pressure from 140 to 700 torr at 700 torr total pressure of N2/02 diluent. Rate constants for the reactions of C1-atoms with Cl-CHZCHO and Br-atoms with Br-CH2CH0 were also determined to be [4.3 2 0 . 2 ( 2~) ]x lo-" and less than or equal to [1.83 ? O.ll(2a)l x cm3 molecule-' s-', respectively.

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Atmospheric Reactions Involving Hydrocarbons: Long Path‐FTIR Studies

Cited by 7 publications

References 131 publications

Vibrational Spectroscopy in the Automotive Industry

Vibrational Spectroscopy in the Automotive Industry

ChemInform Abstract: Atmospheric Reactions Involving Hydrocarbons: Long Path‐FTIR Studies

FTIR spectroscopic study of the Cl‐ and Br‐atom initiated oxidation of ethene

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