This paper presents hydrothermal decomposition of cellulosic polysaccharides in corncob using SnO₂-Co₃O₄/C biochar catalyst to nine soluble monosaccharides including xylose, mannose, galactose, glucose, xylulose, arabinose, fructose, maltose and sucrose. H₃O⁺ can convert hemicellulose and cellulose to soluble sugars by saccharification, following the Lewis acid sites from SnO₂-Co₃O₄-2/C catalyst make the isomerization of xylose to xylulose or arabinose, as well as glucose to fructose. The xylulose and fructose would be furthermore dehydrated to small compounds due to the acid strength of catalyst. Maltose and sucrose could be produced by the condensation of monosaccharides with prolonged reaction time. The maximum yield of reducing sugars reached 83.3% under the optimized operation condition as 5 g dried corncob particles, 0.3 g SnO₂-Co₃O₄/C biochar catalyst and 100 mL H₂O charged in the reactor at 180 °C for duration of 170 min.

中文翻译：

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SnO 2 -Co 3 O 4 / C生物炭催化剂将玉米芯纤维素多糖催化水解为糖类

本文介绍了利用SnO ₂ -Co ₃ O ₄ / C生物炭催化剂对玉米芯中的纤维素多糖进行水热分解，得到9种可溶性单糖，包括木糖，甘露糖，半乳糖，葡萄糖，木糖，阿拉伯糖，果糖，麦芽糖和蔗糖。在SnO ₂ -Co ₃ O ₄的路易斯酸位点之后，H ₃ O ⁺可以通过糖化作用将半纤维素和纤维素转化为可溶性糖。-2 / C催化剂使木糖异构化为木酮糖或阿拉伯糖，以及葡萄糖异构化为果糖。由于催化剂的酸强度，木酮糖和果糖还将进一步脱水成小的化合物。麦芽糖和蔗糖可以通过单糖的缩合和延长反应时间来产生。在最佳操作条件下，还原糖的最大收率达到了83.3％，因为5 g干燥的玉米芯颗粒，0.3 g SnO ₂ -Co ₃ O ₄ / C生物炭催化剂和100 mL H ₂ O在180°C下持续放置在反应器中170分钟