Catalytic conversion of methane and propylene to 1-butene
Journal Article
·
· Journal of Physical Chemistry
- Texas A&M Univ., College Station, TX (United States)
The oxidative cross-coupling of methane with propylene has been studied over several catalysts. A material containing 1.9 wt % Mn and 5 wt % NaCl on SiO{sub 2} was found to be the most effective for this reaction. At 650{degree}C, it was possible to attain selectivities to 1-butene and butadiene of 57% and 8.0%, respectively, at a propylene conversion of 38%. Experiments utilizing {sup 13}CH{sub 4} confirm that methane was indeed involved in the formation of the C{sub 4} products. Methyl radicals derived from CH{sub 4} and allyl radicals derived from C{sub 3}D{sub 6} were simultaneously detected over the catalysts using a matrix isolation electron spin resonance method. These surface-generated radicals enter the gas phase, where most of the coupling is believed to occur. In addition to the cross-coupling reaction, methyl radicals couple to form ethane, and allyl radicals couple to form 1,5-hexadiene. The latter hydrocarbon reacts extensively back to propylene over the catalysts at 650{degree}C. 28 refs., 4 figs., 10 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 102875
- Journal Information:
- Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 33 Vol. 99; ISSN JPCHAX; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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