水溶液中 MgZr 混合氧化物催化葡萄糖异构化为果糖

IF 3.8 3区 化学 Q2 CHEMISTRY, PHYSICAL
Catalysts Pub Date : 2024-05-18 DOI:10.3390/catal14050332
Xiongxiong Zuo, Xing Tang
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引用次数: 0

摘要

葡萄糖催化异构化为果糖在生物质作为化工原料的应用中起着举足轻重的作用。在此,我们提出了一种简便的固态研磨策略来构建 ZrO2/MgO 混合氧化物,其果糖产率超过 34.55%,选择性高达 80.52%(80 °C,2 小时)。两亲性 ZrO2 与 MgO 的共混改善了 MgO 上不利的中/强碱性位点分布,从而抑制了反应过程中的副反应,提高了果糖的选择性。根据催化剂的表征,氧化镁通过堵塞孔隙沉积在 ZrO2 表面,ZrO2 的加入减少了氧化镁强碱性位点的数量。此外,通过回收实验,与纯氧化镁相比,ZrO2 的存在在很大程度上提高了催化剂的稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Glucose Isomerization to Fructose Catalyzed by MgZr Mixed Oxides in Aqueous Solution
The catalytic isomerization of glucose to fructose plays a pivotal role in the application of biomass as a feedstock for chemicals. Herein, we propose a facile solid-state-grinding strategy to construct ZrO2/MgO mixed oxides, which offered an excellent fructose yield of over 34.55% and a high selectivity of 80.52% (80 °C, 2 h). The co-mingling of amphiphilic ZrO2 with MgO improved the unfavorable moderate/strongly basic site distribution on MgO, which can prohibit the side reactions during the reaction and enhance the fructose selectivity. Based on the catalyst characterizations, MgO was deposited on the ZrO2 surface by plugging the pores, and the addition of ZrO2 lessened the quantity of strongly basic sites of MgO. Additionally, the presence of ZrO2 largely enhanced the catalyst stability in comparison with pure MgO by recycling experiments.
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来源期刊
Catalysts
Catalysts CHEMISTRY, PHYSICAL-
CiteScore
6.80
自引率
7.70%
发文量
1330
审稿时长
3 months
期刊介绍: Catalysts (ISSN 2073-4344) is an international open access journal of catalysts and catalyzed reactions. Catalysts publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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