期刊
CATALYSIS LETTERS
卷 145, 期 2, 页码 689-696出版社
SPRINGER
DOI: 10.1007/s10562-014-1425-z
关键词
Heterogeneous catalysis; Alkenes; Oxidation; Epoxidation
资金
- Sasol
- Mintek Cardiff University
- EPSRC [EP/G069395/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G069395/1] Funding Source: researchfish
The oxidation of dec-1-ene has been investigated using gold nanoparticles supported on graphite in the presence of a radical initiator (alpha,alpha-azobisisobutyronitrile) using oxygen from air as oxidant. We have investigated the influence of the reaction temperature (70-100 A degrees C), catalyst mass and reaction time on the epoxide yield. In the absence of a radical initiator the reaction does not proceed, although auto-oxidation can occur at higher temperatures in the range studied. However, in the presence of an initiator, selective oxidation occurs and the initiator propagates the reaction through the formation of a peroxy-radical at the allylic C-3 position. Graphite enhances the formation of the allylic products dec-1-en-3-ol, dec-1-en-3-one, and dec-2-en-1-ol; however, the addition of gold nanoparticles to the graphite, enhances formation of 1,2-epoxydecane. It is suggested that gold suppresses the formation of allylic products via a Russell termination.
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