Transforming biomass waste into cost-effective catalysts for chemical reactions provides new opportunity for biomass waste valorization. In this work, we examined the possibility of using food waste solid digestate as raw materials for the production of a heterogeneous catalyst for glucose isomerization to fructose, which is one of the important intermediates for the production of platform chemicals, hydrocarbon fuels and synthetic materials from biomass. Hydroxyapatite-based catalysts were obtained from food waste digestate by a coupled hydrothermal-calcination approach. In the hydrothermal treatment process, the addition of exogenous calcium can adjust the alkalinity of the catalyst, which is beneficial to improve the activity of the catalyst. The reaction parameters such as reaction temperature, reaction time and catalyst dosage have also been optimized. The catalyst showed excellent catalytic performance in the glucose isomerization reaction resulting in a high fructose yield of 32.3% with a reaction time of only 20 min at 80 °C in water. The catalyst can be reused after a simple regeneration without significant activity. This work provides a win-win strategy, which not only solves the problem of the disposal and utilization of digestate, but also expands the synthesis method of the glucose isomerization reaction catalyst.

中文翻译：

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源自食物垃圾消化物的羟基磷灰石催化剂用于有效地将葡萄糖异构化为果糖

将生物质废物转化为具有成本效益的化学反应催化剂，为生物质废物增值提供了新的机会。在这项工作中，我们研究了使用餐厨垃圾固体消化物作为原料生产用于葡萄糖异构化为果糖的非均相催化剂的可能性，果糖是生产平台化学品、碳氢化合物燃料和合成材料的重要中间体之一。生物质。羟基磷灰石基催化剂是通过耦合水热煅烧方法从食物垃圾消化物中获得的。在水热处理过程中，外源钙的加入可以调节催化剂的碱度，有利于提高催化剂的活性。反应温度等反应参数，反应时间和催化剂用量也进行了优化。该催化剂在葡萄糖异构化反应中表现出优异的催化性能，果糖收率高达 32.3%，在 80°C 的水中反应时间仅为 20 分钟。该催化剂经简单再生后可重复使用，活性不显着。该工作提供了一种双赢的策略，不仅解决了沼渣的处置和利用问题，而且拓展了葡萄糖异构化反应催化剂的合成方法。