A Critical Review of the Gas-Phase Reaction Kinetics of the Hydroxyl Radical

By Wilson, William E.

Book Id: WPLBN0000661579
Format Type: PDF eBook:
File Size: 5.59 MB
Reproduction Date: 2005

Title:	A Critical Review of the Gas-Phase Reaction Kinetics of the Hydroxyl Radical
Author:	Wilson, William E.
Volume:
Language:	English
Subject:	Technology., Reference materials, Technology and literature
Collections:	Techonology eBook Collection
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Citation APA MLA Chicago E. Wilso, B. W. (n.d.). A Critical Review of the Gas-Phase Reaction Kinetics of the Hydroxyl Radical. Retrieved from http://self.gutenberg.org/

Description
Technical Reference Publication

Excerpt
Introduction: During the past decade, the detailed investigation of the dynamics, rates, and mechanisms associated with the interactions of ions with molecules in the vapor phase has been characterized by an almost exponential growth. The current widespread interest in these processes can be attributed to their recognized role in the upper atmosphere, combustion systems, in materials exposed to high energy radiation, and their application in organic and inorganic trace analysis, especially in the area of air and water pollution. Recent reviews of kinetic data have been restricted to those reactions relevant to the chemical physics of planetary atmospheres, which involves principally the interactions of atomic, diatomic, and triatomic inorganic ions. Although the literature concerned with specific aspects of the instrumentation, thermochemistry, kinematics, rates, and mechanisms associated with vapor phase processes involving complex ions, particularly those of organic origin, is quite extensive, the available?

Table of Contents
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. The Production of Kinetic Data .................. Al. Introduction ................................... 141.1. Combustion Processes. .. ... .... 111.2. Recombination in Nozzles ..... . 111.3. Air Pollution.. . . . . . . . . . . . . . . . . . . . . . A1.4. Upper Atmosphere Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -. . . A2. Production of Hydroxyl Radicals ........ A2.1. Electric Discharges in Water Vapor.. . . . . . . . . . . . . . . . . . . . . . . . . . . . ,422. The Chemical Reaction H+NO,+ NO+OH ......... A2.3. HzOi Decomposition: The Problem of HOZ ............... A2.4. Photolysis of Water Vapor.. . . . A2.5. Thermal Methods ................ A2.6. Conclusion: Production of OH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3. Measurement of Hydroxyl Radicals.. . . . tW.l. Initial Concentration by Chemical Analysis ..... . .. . .. . .. ...... iW.2. Ultraviolet Absorption Spectroscopy ......................... A3.3. Mass Spectroscopy .............. A3.4. Equilibrium Calculations.. ... .. A3.5. Quantitative Electron Spin Resonance . . . . . . . . . . . . . . . . . . . . . . K3.6. Flame Photometry ............... Page 537 538 53 8 538 538 538 539 539 539 539 540 54 1 541 541 541 541 541 542 542 542 542 *Present Affiliation: Environmental Protection Agency, Research Triangle Park, North Carolina, 27711. Copyright 0 1972 by the U.S. Secretary of Commerce on behalf of the United States. This copyright will be assigned to the American Institute of Physics and the American Chemical Society, to whom all requests regarding reproduction should be addressed. Page A3.7. Conclusion: Meas~lr~menotf OH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542 A4. Determination of Kinetic Data ........... 543 A4.1. Discharge-Flow Technique.. . . . 543 A4.2. Flash Photolysis-Kinetic Spectroscopy ......................... 544 A4.3. Microstructure of Premixed- Laminar Flames ............... 544 A4.4. Other Experimental Techniques ........................... 545 A5. References - Section A . . . . . . .. . . . . . . . .. . . . 545 B. Evaluation of Rate Constants ..................... 546 B1. kl, Rate Constant for the Reaction OH+OH+H20+0 ................. 546 B1.1. General Discussion . . . . . .. . . . . . . . 546 Bl.la. Experimental Measurements ............ 546 Bl.lb. Other Evaluations.. . 548 B1.2. References and Comments, OH+OH+H20+O, Reaction (1) ..................... 548 B1.2a. Experimental Measurements ............ 548 B1.2b. Evaluations ............ 549 B1.2~. Calculations ........... 549 B1.2d. General References. 549 B2. k2, Rate Constant for the Reaction CO+OH+COz+H .................. 549 B2.1. General Discussion ... ... . . .. .. .. 549 B2.la. Rate Constant Measurements ............ 549 B2. lb. Relation to Other Evaluations ......... 552 B2.2. References and Comments, CO+OH-+COz+H, Reaction (2) ..................... 552