Furfural (FF) is a platform chemical with high value and wide application. The catalysts (Zinc oxide modified magnesium-aluminum spinel catalyst (Zn/MgAl2O4)) prepared in this paper allowed for the fast and efficient preparation of FF. Catalytic pyrolysis experiments were carried out on three typical biomass, and it was found that Zn/MgAl2O4 had a significant enrichment effect on the production of FF in bio-oil. And the effect was more pronounced in the camphor wood experiments. Under pyrolysis conditions (400 °C, catalyst to biomass mass ratio is 1:1), FF relative content reached 64.31 wt%. Zn2+ increased the acidic sites in Zn/MgAl2O4 and accelerates proton transfer. Glycosidic bond cleavage and monomer degradation were significantly enhanced, resulting in improved FF conversion efficiency. The relative content of FF in the bio-oils obtained from pyrolysis of the three biomass feedstock in the temperature range of 400–600 °C was more than 50 wt%, and the results were better at low temperatures. The results of this paper can provide a theoretical basis for the preparation of FF from clean energy biomass.

中文翻译：

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使用 Zn/MgAl2O4 催化剂改善木质纤维素生物质的糠醛生产

糠醛 （FF） 是一种价值高、应用广泛的平台化学品。本文制备的催化剂（氧化锌改性镁铝尖晶石催化剂 （Zn/MgAl2O4））允许快速有效地制备 FF。对三种典型生物质进行了催化热解实验，发现 Zn/MgAl2O4 对生物油中 FF 的生产具有显着的富集作用。而这种效果在樟木实验中更为明显。在热解条件下（400 °C，催化剂与生物质之比为 1：1），FF 相对含量达到 64.31 wt%。Zn2+ 增加了 Zn/MgAl2O4 中的酸性位点并加速了质子转移。糖苷键裂解和单体降解显著增强，从而提高了 FF 转换效率。在 400–600 °C 的温度范围内，三种生物质原料热解得到的生物油中 FF 的相对含量超过 50 wt%，在低温下效果更好。本文研究结果可为清洁能源生物质制备 FF 提供理论依据。