Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

High-accuracy first-principles-based rate coefficients for the reaction of OH and CH3OOH

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI:https://doi.org/10.1039/d2cp03919b· OSTI ID:2420729
 [1];  [2];  [3]
  1. Univ. of Florida, Gainesville, FL (United States); OSTI
  2. Univ. of Florida, Gainesville, FL (United States)
  3. University of Leuven (Belgium)

Here, the ˙OH-initiated oxidation of methyl hydroperoxide, which plays an important role in the atmospheric chemistry of methane, was theoretically characterized using high-accuracy composite amHEAT-345(Q) coupled-cluster calculations followed by a two-dimensional E,J resolved master equation analysis. The reaction is found to proceed through two distinct hydrogen-bonded pre-reactive complexes leading to two product channels, in accord with the experimental observations: (i) ˙OH + CH3OOH → CH3OO˙ + H2O with a yield of 0.8 ± 0.1, and (ii) ˙OH + CH3OOH → HCHO + ˙OH + H2O with a yield of 0.2 ± 0.1. The calculated reaction enthalpies are within 0.2 kcal mol-1 of the benchmark ATcT values. Overall thermal rate coefficients obtained from first principles are found to be in the low-pressure limit at atmospheric pressure; the total rate coefficient can be expressed over the T = 200–450 K range as k(T) = 5.0 × 10-12 × T-0.152 × exp(287/T) cm3 s-1, strongly supporting the experimental results of Vaghjiani and Ravishankara, with which this expression agrees within ca. 15%. The current results show that (i) is the principal reaction channel and support the view that, due to its inherently fast transformations, CH3OOH is an important redistribution species for HOx˙ radicals in the Earth's atmosphere.

Research Organization:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0018164
OSTI ID:
2420729
Alternate ID(s):
OSTI ID: 1894962
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 43 Vol. 24; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (64)

Theoretical study on the kinetics of OH radical reactions with CH3OOH and CH3CH2OOH journal October 2010
Semiclassical transition state theory/master equation kinetics of HO + CO: Performance evaluation journal September 2020
Non-iterative fifth-order triple and quadruple excitation energy corrections in correlated methods journal February 1990
Ab initio calculation of anharmonic constants for a transition state, with application to semiclassical transition state tunneling probabilities journal August 1990
Semiclassical transition state theory. A new perspective journal October 1993
A fifth-order perturbation comparison of electron correlation theories journal May 1989
Why CCSD(T) works: a different perspective journal December 1997
Hydrogen peroxide and organic hydroperoxide in the troposphere: a review journal January 2000
HȮ2 + HȮ2: High level theory and the role of singlet channels journal January 2022
Computational study of the stability of α-hydroperoxyl- or α-alkylperoxyl substituted alkyl radicals journal August 2004
A practical implementation of semi-classical transition state theory for polyatomics journal October 2010
Wavelength dependent photodissociation of CH3OOH journal December 2005
The Reaction between CH 3 O 2 and OH Radicals: Product Yields and Atmospheric Implications journal February 2017
Reaction of Methylidyne with Ethane: The C–C Insertion Is Unimportant journal March 2022
A Steady-State Approximation to the Two-Dimensional Master Equation for Chemical Kinetics Calculations journal February 2015
Stabilization of the Simplest Criegee Intermediate from the Reaction between Ozone and Ethylene: A High-Level Quantum Chemical and Kinetic Analysis of Ozonolysis journal May 2015
Three-Dimensional Master Equation (3DME) Approach journal August 2018
Pragmatic Solution for a Fully E , J -Resolved Master Equation journal March 2020
Variational unimolecular rate theory journal July 1983
Reduced dimensionality theory of quantum reactive scattering journal June 1991
A Fourier transform infrared study of the kinetics and mechanism for the reaction hydroxyl + methyl hydroperoxide journal June 1983
Kinetics and mechanism of hydroxyl radical reaction with methyl hydroperoxide journal March 1989
Tunneling corrections to unimolecular rate constants, with application to formaldehyde journal November 1979
Solution of Some One- and Two-Dimensional Master Equation Models for Thermal Dissociation:  The Dissociation of Methane in the Low-Pressure Limit journal May 2002
Sums and Densities of Fully Coupled Anharmonic Vibrational States: A Comparison of Three Practical Methods journal February 2010
Ab Initio Reaction Rate Constants Computed Using Semiclassical Transition-State Theory: HO + H 2 → H 2 O + H and Isotopologues journal May 2011
Theoretical Determination of the Rate Coefficient for the HO + HO 2 → H 2 O 2 + O 2 Reaction: Adiabatic Treatment of Anharmonic Torsional Effects journal February 2012
Ab Initio Thermal Rate Calculations of HO + HO = O( 3 P) + H 2 O Reaction and Isotopologues journal February 2013
Henry's Law Constant Determinations for Hydrogen Peroxide, Methyl Hydroperoxide, Hydroxymethyl Hydroperoxide, Ethyl Hydroperoxide, and Peroxyacetic Acid journal January 1996
Full Iterative Solution of the Two-Dimensional Master Equation for Thermal Unimolecular Reactions journal January 1996
Current Status of Transition-State Theory journal January 1996
Atmospheric chemistry of small organic peroxy radicals journal June 2001
Absorption cross sections of CH3OOH, H2O2, and D2O2vapors between 210 and 365 nm at 297 K journal January 1989
The reaction of methyl peroxy and hydroxyl radicals as a major source of atmospheric methanol journal October 2016
The reaction of hydroxyl and methylperoxy radicals is not a major source of atmospheric methanol journal October 2018
The atmospheric oxidation of CH 3 OOH by the OH radical: the effect of water vapor journal January 2017
The CH(X2Π) + H2O reaction: two transition state kinetics journal January 2021
Semi-classical theory for non-separable systems:. Construction of “good” action-angle variables for reaction rate constants journal January 1977
Some applications of the transition state method to the calculation of reaction velocities, especially in solution journal January 1935
Quantum mechanical investigation of the O+H2→OH+H reaction journal July 2003
Adiabatic Rotations in Unimolecular Rate Theory journal April 1968
Empirical Equations to Calculate 16 of the Transport Collision Integrals Ω ( l, s )* for the Lennard‐Jones (12–6) Potential journal August 1972
The Activated Complex in Chemical Reactions journal February 1935
Quantum anharmonic densities of states using the Wang–Landau method journal August 2008
Theory of thermal unimolecular reactions at low pressures. I. Solutions of the master equation journal June 1977
Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen journal January 1989
Benchmark calculations with correlated molecular wave functions. IV. The classical barrier height of the H+H 2 →H 2 +H reaction journal May 1994
Master equation analysis of intermolecular energy transfer in multiple-well, multiple-channel unimolecular reactions. II. Numerical methods and application to the mechanism of the C2H5+O2 reaction journal November 1999
High-level theoretical study of the reaction between hydroxyl and ammonia: Accurate rate constants from 200 to 2500 K journal October 2017
A master equation simulation for the OH + CH 3 OH reaction journal February 2019
High-accuracy extrapolated ab initio thermochemistry. IV. A modified recipe for computational efficiency journal June 2019
Gas-Phase Tropospheric Chemistry of Volatile Organic Compounds: 1. Alkanes and Alkenes journal March 1997
Coupled-cluster techniques for computational chemistry: The CFOUR program package journal June 2020
Diffusion approximations of the two-dimensional master equation journal December 1996
Nanostructural evolution of Zn by dry roller vibration milling at room temperature* journal April 2006
Unimolecular Reaction Dynamics book August 1996
On the Quantum Mechanics of the Rotational Distortion of Multiplets in Molecular Spectra journal August 1928
Determining the density of states for classical statistical models: A random walk algorithm to produce a flat histogram journal October 2001
Efficient, Multiple-Range Random Walk Algorithm to Calculate the Density of States journal March 2001
Predictive a priori pressure-dependent kinetics journal December 2014
Variational Transition State Theory journal October 1984
OH and HO2 chemistry in clean marine air during SOAPEX-2 journal June 2004
Evaluated kinetic and photochemical data for atmospheric chemistry: Volume II – gas phase reactions of organic species journal January 2006
Near-UV photolysis cross sections of CH3OOH and HOCH2OOH determined via action spectroscopy journal January 2007

Similar Records

Kinetics and mechanism of OH reaction with CH sub 3 OOH
Journal Article · Wed Mar 08 23:00:00 EST 1989 · Journal of Physical Chemistry; (USA) · OSTI ID:5040774