Journal
CATALYSIS COMMUNICATIONS
Volume 65, Issue -, Pages 10-13Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2015.02.018
Keywords
Graphene as catalysts; Metal-free catalysts; Carbocatalysis; Aerobic oxidation of alkenes
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Funding
- University Grants Commission, New Delhi
- Spanish Ministry of Economy and Competitiveness [CTQ-2012-32315]
- Generalidad Valenciana [Prometeo 2012-014]
- European Community's Seventh Framework Programme [228862]
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Pyrolysis of X-carrageenan at 1000 degrees C and subsequent exfoliation lead to a S-doped graphene [(S)G]. Increasing pyrolysis temperature to 1200 degrees C or the use of other carrageenans with lower sulphate content results in the failure of S doping. XPS confirms the presence of S atom (4.5%) with environments alike sulphide and sulphoxide. (S) G promotes the aerobic oxidation of styrenes to their corresponding benzaldehydes accompanied by lesser amounts of styrene oxide. In contrast, under the same experimental conditions reduced graphene oxide exhibits a negligible activity. (S)G was reused with almost coincident catalytic performance. (C) 2015 Elsevier B.V. All rights reserved.
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