浸渍法合成铁沸石催化剂及其在葡萄糖异构化中的催化性能

A. R. Permanasari, Rony Pasonang Sihombing, F. Yulistiani, Tifa Paramita, Andin Faranitha Tsamarah, Euglina Meydillahaq, Wahyu Wibisono
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摘要

一种改性天然沸石将在葡萄糖与果糖的异构化过程中用作催化剂。通过浸渍法在沸石孔隙中加入铁对其进行改性,从而在异构化过程中形成催化剂的活性位点。本研究旨在利用铁浸渍天然沸石制作催化剂,并测定其在不同 pH 值、温度和异构化时间条件下的催化性能。沸石使用 6M H2SO4 和 0.5M KMnO4 活化。沸石浸渍过程使用 1%(%w/v)FeCl3.6H2O 溶液,比例为(1:8),然后在 500°C 煅烧 4 小时。对铁沸石催化剂进行了表征,以确定其结晶度和晶体形态、组成化合物的官能团以及表面积。异构化过程是以 10%的葡萄糖溶液和 1 克 Fe-zeolite 催化剂为底物,在 40、50 和 60°C,pH 值为 5、7 和 9,每 15 分钟取样一次,持续 1 小时的不同温度下进行的。在反应温度为 60°C、pH 值为 5、反应时间为 45 分钟的条件下,异构化过程的果糖收率最高,为 0.837%。研究得出结论,铁沸石催化剂对葡萄糖异构化过程没有显著影响。预计其他研究人员也会进行类似的研究,使用不同类型的金属浸渍催化剂,以便在葡萄糖异构化过程中取得更好的效果。
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The Synthesis of Fe-Zeolite Catalyst by Impregnation Process and its Catalytic Performance in Glucose Isomerization
A modified natural zeolite will be used as a catalyst in the isomerization process of glucose to fructose. It is modified by inserting Fe into its pores with the impregnation method so that the active site of the catalyst is formed as part of the isomerization process. This study aimed to make a catalyst from Fe-impregnated natural zeolite and determine its catalytic performance under various pH, temperature, and isomerization time conditions. The zeolite was activated using 6M H2SO4 and 0.5M KMnO4. The zeolite impregnation process was carried out using 1% (%w/v) FeCl3.6H2O solution with a ratio of (1:8) and continued with calcination at 500°C for 4 hours. The Fe-zeolite catalyst was characterized to determine the degree of crystallinity and crystal form, functional groups of its constituent compounds, and surface area. The isomerization process was carried out as a substrate of 10% glucose solution and 1 g of Fe-zeolite catalyst at various temperatures of 40, 50, and 60°C; pH 5, 7, and 9; a sampling time of every 15 minutes for 1 hour. The best fructose yield from the isomerization process was at a reaction temperature of 60°C, pH 5, and 45 min with a yield of 0.837%. It concluded that the Fe-Zeolite catalyst did not give a significant effect on the glucose isomerization process. It is expected that other researchers conduct similar research with different types of metal impregnated to give better results on the glucose isomerization process.
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