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Efficient one-pot conversion of corncob to formic acid using bi-functional MnCeOx/Nb2O5 catalyst
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2024-06-30 , DOI: 10.1016/j.biombioe.2024.107297 Siyu Xu , Jirui Yang , Hejuan Wu , Haixin Guo , Mo Qiu , Xiao Zhang , Feng Shen
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2024-06-30 , DOI: 10.1016/j.biombioe.2024.107297 Siyu Xu , Jirui Yang , Hejuan Wu , Haixin Guo , Mo Qiu , Xiao Zhang , Feng Shen
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A new process for the production of formic acid from corncob waste was constructed by using MnCeO/NbO catalyst. Among pristine hemicellulose, cellulose or lignin in corncob, hemicellulose gave the maximum formic acid yield (61.2 %). Dilute hydrochloric acid (0.37 wt%) assisted-ball milling pretreatment of pristine cellulose reduced its crystallinity and increased formic acid yield from 2.6 % to 40.2 %, while lignin was hardly converted into formic acid (<7 %). In the assessment of Mn and Ce in MnCeO/NbO, a synergistic effect was observed in formic acid formation. Formic acid yield obtained over MnCeO/NbO was 1.5-fold higher that obtained over MnO/NbO. Formic acid yield as high as 0.56 g/g could be obtained directly from pretreated corncob, demonstrating potential for converting agro-waste biomass into formic acid over MnCeO/NbO catalyst. Mechanistic studies revealed that arabinose, glyceric acid and glycolic acid were main intermediates in the conversion of corncob to formic acid.
中文翻译:
使用双功能 MnCeOx/Nb2O5 催化剂将玉米芯高效一锅转化为甲酸
采用MnCeO/NbO催化剂,构建了玉米芯废料生产甲酸的新工艺。在玉米芯中的原始半纤维素、纤维素或木质素中,半纤维素的甲酸产量最高(61.2%)。稀盐酸(0.37 wt%)辅助球磨预处理原始纤维素降低了其结晶度,并将甲酸产率从 2.6% 提高到 40.2%,而木质素几乎不转化为甲酸(<7%)。在评估 MnCeO/NbO 中的 Mn 和 Ce 时,观察到在甲酸形成中存在协同效应。 MnCeO/NbO 获得的甲酸产率是 MnO/NbO 获得的甲酸产率的 1.5 倍。可以直接从预处理的玉米芯中获得高达 0.56 g/g 的甲酸产量,这表明通过 MnCeO/NbO 催化剂将农业废弃物生物质转化为甲酸的潜力。机理研究表明,阿拉伯糖、甘油酸和乙醇酸是玉米芯转化为甲酸的主要中间体。
更新日期:2024-06-30
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
使用双功能 MnCeOx/Nb2O5 催化剂将玉米芯高效一锅转化为甲酸
采用MnCeO/NbO催化剂,构建了玉米芯废料生产甲酸的新工艺。在玉米芯中的原始半纤维素、纤维素或木质素中,半纤维素的甲酸产量最高(61.2%)。稀盐酸(0.37 wt%)辅助球磨预处理原始纤维素降低了其结晶度,并将甲酸产率从 2.6% 提高到 40.2%,而木质素几乎不转化为甲酸(<7%)。在评估 MnCeO/NbO 中的 Mn 和 Ce 时,观察到在甲酸形成中存在协同效应。 MnCeO/NbO 获得的甲酸产率是 MnO/NbO 获得的甲酸产率的 1.5 倍。可以直接从预处理的玉米芯中获得高达 0.56 g/g 的甲酸产量,这表明通过 MnCeO/NbO 催化剂将农业废弃物生物质转化为甲酸的潜力。机理研究表明,阿拉伯糖、甘油酸和乙醇酸是玉米芯转化为甲酸的主要中间体。