Patent
Method for catalytically converting lignin into aromatic hydrocarbon by using two-step process
Zhao Chen,Luo Zhicheng +1 more
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TLDR
In this article, a method for catalytically converting lignin into aromatic hydrocarbon by using a two-step process is presented, which comprises the steps of (a) hydrogenolysis on Lignin in a polar solvent under the actions of a hydrodepolymerization catalyst and hydrogen pressure to obtain a phenol and oil mixture; and (b) carrying out rotary evaporation on the phenol-and oil mixture obtained in the step (a), and carrying out hydrodeoxygenation reaction under the conditions of a HOG catalyst, aAbstract:
The invention discloses a method for catalytically converting lignin into aromatic hydrocarbon by using a two-step process. The method comprises the steps of (a) carrying out hydrogenolysis on lignin in a polar solvent under the actions of a hydrodepolymerization catalyst and hydrogen pressure to obtain a phenol and oil mixture; and (b) carrying out rotary evaporation on the phenol and oil mixture obtained in the step (a), and carrying out hydrodeoxygenation reaction under the conditions of a hydrodeoxygenation catalyst, a solvent, high temperature and low pressure to obtain an aromatic hydrocarbon product. The invention also provides the hydrodepolymerization catalyst and the hydrodeoxygenation catalyst. According to the method, the cheap lignin is used as a raw material and is efficiently converted into the aromatic hydrocarbon under a mild reaction condition by using the two-step process, so that the aromatic hydrocarbon serving as a product is high in economic value, the reaction process is environmental friendly, and the method has wide application prospect.read more
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References
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Patent
Method for preparing aromatic compound by catalytic hydrocracking of lignin
TL;DR: In this paper, a method for preparing an aromatic compound by direct catalytic cracking of lignin is described. But the method is not suitable for the high yield of the aromatic compound and mild reaction condition.
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