Kinetics Database Logo

Kinetics Database Resources

Simple Reaction Search

Search Reaction Database

Search Bibliographic Database

Set Unit Preferences


Rate Our Products and Services


Other Databases

NIST Standard Reference Data Program

NIST Chemistry Web Book

NDRL-NIST Solution Kinetics Database

NIST Computational Chemistry Comparison and Benchmark Database

The NIST Reference on Constants, Units, and Uncertainty


Administrative Links

NIST home page

MML home page

Chemical and Biochemical Reference Data Division

MML home page

Chemical and Biochemical Reference Data Division

  NIST Logo Home
©NIST, 2013
Accessibility information
Author(s):   Tsang, W.; Cui, J. P.; Walker, J.A.
Title:   Single Pulse Shock Tube Studies on the Reactions of Hydrogen Atoms with Unsaturated Compounds
Page(s):   63 - 73
Year:   1990
Book Title:   Proceedings of the 17th International Symposium on Shock Waves & Shock Tubes
Editor:   Kim, Y.W.
Publisher:   American Institute of Physics
Publisher address:   New York
Comments:   Conference held 1989 in Bethlehem, PA USA Also listed as AIP Conference Proceedings 208
Reference type:   Book
Squib:   1990TSA/CUI63-73B

Reaction:   1,3,5-Trimethylbenzene + 1,3-Dimethylbenzene + ·CH3
Reaction order:   2
Temperature:   980 - 1120 K
Pressure:  2.03 - 3.04 bar
Rate expression:   1.11x10-10 [cm3/molecule s] e-27064 [J/mole]/RT
Category:  Experiment
Data type:   Relative value normalized by a reference value
Pressure dependence:   None reported
Experimental procedure:   Shock tube
Excitation technique:   Thermal
Time resolution:   By end product analysis
Analytical technique:   Gas chromatography
Comments:   Temperatures were derived using the decomposition of hexamethylethane as a standard with a rate constant k(HME = 2 t-butyl) = 3.0x1016exp(-34500/T) s-1

Absolute rate derived from measured relative rate using:
k(H + CH4 = CH3 + H2)/L mol-1s-1 = 2.4x1011exp(-7000/T)

View full bibliographic record.

Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
980 4.02E-12
1000 4.29E-12
1025 4.65E-12
1050 5.01E-12
1075 5.39E-12
1100 5.77E-12
1120 6.08E-12