1
08
T.P. Tiemersma et al. / Applied Catalysis A: General 433–434 (2012) 96–108
stants can be roughly estimated if the ratio k /k is equal to 4.3 and
be obtained at high CH and low O partial pressures, best achieved
4 2
4
1
k5/k equal to 2.7, which is based on the data published by Takanabe
in reactor systems with distributed oxygen feed.
1
and Iglesia [4].
Based on the experimental results in Fig. 11a and b, it was
assumed that the reaction orders in CH4 for reactions (1) and (3),
and the O2 reaction order of reaction (3) were equal to 1.0. This
result is well in agreement with earlier obtained results from e.g.
Acknowledgement
The authors would like to acknowledge the financial support by
the Netherlands Organisation for Scientific Research (NWO/ACTS)
under the research theme of Advanced Sustainable Processes by
Engaging Catalytic Technologies (ASPECT) (project 053.62.008).
[
8] on a different catalyst.
The reaction order of 1.0 for O for reaction (2) was also observed
2
by Stansch. Clearly, it can be seen that while reactions (1) and (3)
have a reaction order of approximately 1.0 to the hydrocarbons, a
lower reaction order in CH4 was found for the methane oxidation
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2