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N-Doped natural albite mineral as green solid catalyst for efficient isomerization of glucose into fructose in water
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2022-05-12 , DOI: 10.1039/d2re00112h Jiabing Ren 1 , Xin Ye 1 , Xiaoyu Shi 1 , Huixing Xu 2 , Lanxin Wu 1 , Tianfu Wang 1, 2, 3
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2022-05-12 , DOI: 10.1039/d2re00112h Jiabing Ren 1 , Xin Ye 1 , Xiaoyu Shi 1 , Huixing Xu 2 , Lanxin Wu 1 , Tianfu Wang 1, 2, 3
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The catalytic isomerization of glucose to fructose has been considered a crucial step in the field of biomass valorization. As such, the development of environment-friendly and efficient heterogeneous catalysts for glucose isomerization is urgently required. In this study, a green N-doped mineral catalyst (i.e., CS/Ab) was prepared with chitosan as nitrogen precursors deposited on the natural albite. The basicity of pristine albite is limited, but N-doping and calcination can significantly increase the density and strength of base sites. The CO2-TPD and XPS results identified that the introduction of nitrogen species (mainly pyridine and pyrrole) on the albite surface could impart the weak or medium base character of the catalyst, which is beneficial for fructose production with high selectivity. The CS/Ab catalyst displayed good catalytic performance with 38.9% yield and 85.4% selectivity of fructose at mild temperature (90 °C) in water, and the activation energy for the CS/Ab-catalyzed glucose conversion was calculated to be 46.9 kJ mol−1. This work advances the utilization of biomass waste and minerals as green and efficient catalyst for base-catalyzed biorefinery reaction, and provides insights into the active components for glucose isomerization.
中文翻译：
N-掺杂天然钠长石矿物作为绿色固体催化剂用于葡萄糖在水中高效异构化为果糖
葡萄糖催化异构化为果糖被认为是生物质增值领域的关键步骤。因此，迫切需要开发环境友好、高效的多相葡萄糖异构化催化剂。在这项研究中，用壳聚糖作为沉积在天然钠长石上的氮前体制备了一种绿色的 N 掺杂矿物催化剂（即CS/Ab）。原始钠长石的碱度有限，但N掺杂和煅烧可以显着提高碱度的密度和强度。CO 2-TPD和XPS结果表明，在钠长石表面引入氮物质（主要是吡啶和吡咯）可以赋予催化剂弱碱或中碱的特性，这有利于果糖的高选择性生产。CS/Ab 催化剂表现出良好的催化性能，在水中温和温度（90 ℃）下，果糖的产率和选择性分别为 38.9% 和 85.4%，计算得到 CS/Ab 催化葡萄糖转化的活化能为 46.9 kJ mol -1。这项工作促进了生物质废物和矿物作为碱催化生物炼制反应的绿色高效催化剂的利用，并为葡萄糖异构化的活性成分提供了见解。
更新日期：2022-05-17
中文翻译：
N-掺杂天然钠长石矿物作为绿色固体催化剂用于葡萄糖在水中高效异构化为果糖
葡萄糖催化异构化为果糖被认为是生物质增值领域的关键步骤。因此，迫切需要开发环境友好、高效的多相葡萄糖异构化催化剂。在这项研究中，用壳聚糖作为沉积在天然钠长石上的氮前体制备了一种绿色的 N 掺杂矿物催化剂（即CS/Ab）。原始钠长石的碱度有限，但N掺杂和煅烧可以显着提高碱度的密度和强度。CO 2-TPD和XPS结果表明，在钠长石表面引入氮物质（主要是吡啶和吡咯）可以赋予催化剂弱碱或中碱的特性，这有利于果糖的高选择性生产。CS/Ab 催化剂表现出良好的催化性能，在水中温和温度（90 ℃）下，果糖的产率和选择性分别为 38.9% 和 85.4%，计算得到 CS/Ab 催化葡萄糖转化的活化能为 46.9 kJ mol -1。这项工作促进了生物质废物和矿物作为碱催化生物炼制反应的绿色高效催化剂的利用，并为葡萄糖异构化的活性成分提供了见解。
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