Zhang Junhua, Deng Haibo, Lin Lu
Department of Resources Science and Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong Province, China.
Molecules. 2009 Jul 27;14(8):2747-57. doi: 10.3390/molecules14082747.
The perovskite-type oxide catalyst LaFe(1-x)Cu(x)O(3 )(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-x)Cu(x)O(3 )(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.
采用溶胶-凝胶法制备了钙钛矿型氧化物催化剂LaFe(1-x)Cu(x)O(3 )（x = 0、0.1、0.2），并将其作为催化剂用于木质素湿式好氧氧化（WAO）制备芳香醛的反应中。与非催化过程相比，催化过程中木质素转化率和各芳香醛的产率均显著提高。此外，结果表明，在一系列连续的催化反应循环后，LaFe(1-x)Cu(x)O(3 )（x = 0、0.1、0.2）的活性和结构稳定性几乎保持不变，这表明它是一种在WAO过程中将木质素转化为芳香醛的高效且可循环使用的多相催化剂。
