Designing a Solid Catalyst for the Selective Low-Temperature Oxidation of Cyclohexane to Cyclohexanone

Angewandte Chemie (International Edition in English)

Volumn 36, Issue 15, 1997, Pages 1639-1642

  Maschmeyer, Thomas ^a   Oldroyd, Richard D ^a   Sankar, Gopinathan ^a   Thomas, John M ^a   Shannon, Ian J ^a   Klepetko, John A ^b   Masters, Anthony F ^b   Beattie, James K ^b   Catlow, C Richard A ^a  

^a DAVY FARADAY RESEARCH LABORATORY   (United Kingdom)

^b UNIVERSITY OF SYDNEY   (Australia)

Author keywords

Cobalt; EXAFS spectroscopy; Heterogeneous catalysis; Mesoporosity; Oxidations

Indexed keywords

EID: 0030867380     PISSN: 05700833     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.199716391     Document Type: Article

References (30)

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21. a) This approach (results were calibrated by using mesitylene as internal standard) was deemed necessary for the in-situ X-ray absorption spectroscopy (XAS) experiments as the TOF using the flow system were anticipated to be low and appropriate chlorinated solvents interfere with the XAS measurements. b) Reaction conditions: TBHP (10 mL), cyclohexane (9.5 mL), mesitylene (0.5 mL; internal standard), catalyst (150mg) stirred in a batch reactor at 70°C under argon. Up to 20 aliquots of 0.1 mL were withdrawn for analysis during a catalysis run. The MCM-41 was initially exposed to a small amount of the reactive dichlorodimethylsilane with the aim of functionalizing the majority of the silanol groups on the external surface, assuming a faster rate of reaction for the external compared to the internal surface. Hence, to ensure that the catalyst was present predominantly on the inside of the MCM-41 channels, the MCM-41 was treated with the various alkyl tethers only after this pretreatment. This procedure has been shown by scanning transmission electron microscopy to yield the desired effect in related systems (unpublished results).
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