Wet Aerobic Oxidation of Lignin into Aromatic Aldehydes Catalysed by a Perovskite-type Oxide: LaFe1-xCuxO3 (x=0, 0.1, 0.2)

doi:10.3390/molecules14082747

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Molecules 2009, 14(8), 2747-2757; doi:10.3390/molecules14082747

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Wet Aerobic Oxidation of Lignin into Aromatic Aldehydes Catalysed by a Perovskite-type Oxide: LaFe_1-xCu_xO₃ (x=0, 0.1, 0.2)

Junhua Zhang¹, Haibo Deng² and Lu Lin^1,*

¹ Department of Resources Science and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong Province, China ² College of Textile and Clothing, Jiangnan University, Wuxi 214122, Jiangsu Province, China

* Author to whom correspondence should be addressed.

Received: 8 June 2009; in revised form: 7 July 2009 / Accepted: 23 July 2009 / Published: 27 July 2009

(This article belongs to the Special Issue Advances in Heteroaromatic Chemistry)

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Abstract: The perovskite-type oxide catalyst LaFe_1-xCu_xO₃(x=0, 0.1, 0.2) was prepared by the sol–gel method, and tested as a catalyst in the wet aerobic oxidation (WAO) of lignin into aromatic aldehydes. The lignin conversion and the yield of each aromatic aldehyde were signiﬁcantly enhanced in the catalytic process, compared with the non-catalyzed process. Moreover, it was shown that the stability of activity and structure of LaFe_1-xCu_xO₃(x=0, 0.1, 0.2) remained nearly unchanged after a series of successive recyclings of the catalytic reactions, indicating it was an efﬁcient and recyclable heterogeneous catalyst for the conversion of lignin into aromatic aldehydes in the WAO process.

Keywords: perovskite-type oxide; LaFe1-xCuxO3; heterogeneous; wet aerobic oxidation; lignin; aromatic aldehydes

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MDPI and ACS Style

Zhang, J.; Deng, H.; Lin, L. Wet Aerobic Oxidation of Lignin into Aromatic Aldehydes Catalysed by a Perovskite-type Oxide: LaFe_1-xCu_xO₃ (x=0, 0.1, 0.2). Molecules 2009, 14, 2747-2757.

AMA Style

Zhang J, Deng H, Lin L. Wet Aerobic Oxidation of Lignin into Aromatic Aldehydes Catalysed by a Perovskite-type Oxide: LaFe_1-xCu_xO₃ (x=0, 0.1, 0.2). Molecules. 2009; 14(8):2747-2757.

Chicago/Turabian Style

Zhang, Junhua; Deng, Haibo; Lin, Lu. 2009. "Wet Aerobic Oxidation of Lignin into Aromatic Aldehydes Catalysed by a Perovskite-type Oxide: LaFe_1-xCu_xO₃ (x=0, 0.1, 0.2)." Molecules 14, no. 8: 2747-2757.

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