数字农科院2.0

Ball billing induced highly dispersed nano-MgO in biochar for glucose isomerization at low temperatures

文献类型： 外文期刊

作者： Siyu Xu;Haixin Guo;De Li;Hejuan Wu;Mo Qiu;Jirui Yang;Feng Shen

作者机构：

关键词： Ball billing;Biochar;Biomass;Highly dispersion;Isomerization

期刊名称： Bioresource Technology

ISSN： 0960-8524

年卷期： 2024 年 406 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： The isomerization of glucose is a crucial step for biomass valorization to downstream chemicals. Herein, highly dispersed MgO doped biochar (BM-0.5@450) was prepared from rice straw via a solvent-free ball milling pretreatment and pyrolysis under nitrogen conditions. The nano-MgO doped biochar demonstrated enhanced conversion of glucose in water at low temperatures. A 31 % yield of fructose was obtained from glucose over BM-0.5@450 at 50 °C with 80.0 % selectivity. At 60 °C for 140 min, BM-0.5@450 achieved a 32.5 % yield of fructose. Compared to catalyst synthesized from conventional impregnation method (IM@450), the BM-0.5@450 catalyst shows much higher fructose yields (32.5 % vs 25.9 %), which can be attributed to smaller crystallite size of MgO (11.32 nm vs 19.58 nm) and homogenous distribution. The mechanism study shows that the activated MgOH+·OH− group by water facilitated the deprotonation process leading to the formation of key intermediate enediol.

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