Synthesis and Characterization of Sn, Ge, and Zr Isomorphous Substituted MFI Nanosheets for Glucose Isomerization to Fructose,ChemPlusChem

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Synthesis and Characterization of Sn, Ge, and Zr Isomorphous Substituted MFI Nanosheets for Glucose Isomerization to Fructose
ChemPlusChem ( IF 3.0 ) Pub Date : 2021-08-20 , DOI: 10.1002/cplu.202100289
Pannida Dugkhuntod ₁ , Narasiri Maineawklang ₁ , Chadatip Rodaum ₁ , Peerapol Pornsetmetakul ₁ , Kachaporn Saenluang ₁ , Saros Salakhum ₁ , Chularat Wattanakit ₁

Affiliation

Various metals including Sn, Ge, and Zr have been successfully incorporated into the MFI nanosheets via a one-pot synthesis. The as-synthesized zeolites exhibit high external surface area and mesopore volume without large metal oxides aggregated on zeolite surfaces. Interestingly, the successful introduction of heteroatoms in MFI nanosheets can be confirmed by shifted XRD peaks corresponding to the unit cell expansion due to the replacement of metals into the framework. In addition, the UV-Vis absorbance spectra reveal that at the suitable metal loading the incorporated tetrahedral coordination of metal species in the zeolite framework has been obtained. To illustrate the benefits of the prepared catalysts, the glucose isomerization to fructose was carried out in a water/dioxane system. Obviously, the SnMFI-NS samples, containing the high dispersion of metal isomorphous species demonstrate the outstanding catalytic behavior in term of fructose selectivity (>85 %).

中文翻译：

用于葡萄糖异构化为果糖的 Sn、Ge 和 Zr 同晶取代 MFI 纳米片的合成和表征

包括 Sn、Ge 和 Zr 在内的各种金属已通过一锅法合成成功地结合到 MFI 纳米片中。合成后的沸石表现出高外表面积和中孔体积，在沸石表面没有聚集大的金属氧化物。有趣的是，在 MFI 纳米片中成功引入杂原子可以通过移动 XRD 峰来证实，该峰对应于由于金属取代到框架中而导致的晶胞膨胀。此外，紫外-可见吸收光谱表明，在合适的金属负载下，沸石骨架中金属物种的结合四面体配位已经获得。为了说明制备的催化剂的好处，在水/二恶烷体系中进行了葡萄糖异构化为果糖。显然，SnMFI-NS 样本，

更新日期：2021-09-01

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