4.6 Article

Preparation of Syringaldehyde from Lignin by Catalytic Oxidation of Perovskite-Type Oxides

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ACS OMEGA
卷 5, 期 5, 页码 2107-2113

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AMER CHEMICAL SOC
DOI: 10.1021/acsomega.9b02379

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  1. National Natural Science Foundation of China [21706263]

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The influence of different reaction conditions on the yield of syringaldehyde was studied by using perovskite oxide as the catalyst. The optimal reaction conditions are as follows: 0.60 g of dealkali lignin, 0.60 g of 5 wt % theta ring-loaded LaFe0.2Cu0.8O3 catalyst, 30 mL of 1.0 mol/L NaOH solution, 160 degrees C reaction temperature, 0.80 MPa O-2 pressure, and 2.5 h reaction time. Under these conditions, the highest syringaldehyde yield was 10.00%. The recycling performance of the catalyst was studied. It was found by XRD analysis that the catalyst maintained high catalytic activity after four times of use.

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