3046-76-2Relevant academic research and scientific papers
Evidence for light-induced oxygen exchange in the oxidation of liquid hydrocarbons on oxygen 18-labelled titanium dioxide
Choi, Jongmyung,Kang, Donghyeon,Lee, Kyu Hyung,Lee, Byeongno,Kim, Kyung Joong,Hur, Nam Hwi
, p. 9402 - 9407 (2013)
Titanium dioxide (TiO2) nanoparticles labelled with 18O isotopes were prepared via a sol-gel method with titanium alkoxide and 18O water precursors. The presence of 18O in the labelled TiO2 sample was confirmed using Raman spectroscopy and secondary-ion mass spectrometry. The photocatalysis of cyclohexane under UV light was investigated using 18O-labelled TiO2 as the catalyst; this reaction yielded 18O-containing cyclohexanone as the major product. The 18O content in the cyclohexanone product dramatically decreased with increasing reaction time. This isotopic experiment demonstrates that the oxygen atom in cyclohexanone originates from surface oxygen in 18O-labelled TiO2. Similar photoreactions performed with toluene and para-xylene as the hydrocarbon substrates afforded oxidation products containing 18O isotopes. The migration of oxygen atoms in 18O-labelled TiO2 into liquid hydrocarbons provides direct evidence for the involvement of the solid oxide in the interfacial reaction between a liquid substrate and surface oxygen in a solid catalyst.
A method for rapid synthesis of 18Olabeled aldehyde compounds
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Paragraph 0013-0015, (2022/01/12)
The present invention discloses a method for rapid synthesis of 18O labeled aldehyde compounds, first the aldehyde compound and barbituric acid was added to ethanol, reacted at 40 ~ 60 ° C for 10 to 12 h, to obtain precipitation, cooled to room
