Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science and Technology, State Key Laboratory of Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China.
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science and Technology, State Key Laboratory of Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China.
Bioresour Technol. 2015 Sep;192:17-22. doi: 10.1016/j.biortech.2015.05.032. Epub 2015 May 16.
Alumina supported molybdenum catalysts were prepared with an impregnation method. The activity of the catalyst in the ethanolysis of Kraft lignin to C6-C11 molecules, i.e. alcohols, esters, monophenols, benzyl alcohols and arenes, was tested in a batch reactor at 280 °C with initial 0 MPa nitrogen. The complete conversion of lignin to small molecular chemicals was achieved without the formation of tar or char. The reduction temperature during the catalyst preparation was proved to have a profound effect on the activity of the catalyst. The overall product yield firstly increases and then decreases with the increase of the reduction temperature in a range of 500-800 °C. The maximum yield up to 1390 mg/g lignin was obtained with the catalyst reduced at 750 °C. Furthermore, the catalyst showed an excellent recyclability, where no significant loss of the catalytic activity was exhibited after 5 runs.
采用浸渍法制备了氧化铝负载钼催化剂。在间歇反应器中，以初始压力为 0 MPa 的氮气为载气，在 280°C 下测试了该催化剂在 Kraft 木质素醇解为 C6-C11 分子（即醇、酯、单酚、苄醇和芳烃）中的活性。木质素完全转化为小分子化学品，没有焦油或焦炭形成。催化剂制备过程中的还原温度被证明对催化剂的活性有深远的影响。在 500-800°C 的范围内，随着还原温度的升高，整体产物收率先增加后降低。用 750°C 还原的催化剂得到了高达 1390mg/g 木质素的最大收率。此外，该催化剂表现出优异的可循环性，经过 5 次运行后，催化活性没有明显损失。
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