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首页> 外文期刊>Journal of industrial and engineering chemistry >Study on SO4~(2-) /ZrO2-MoO3 in the integrative transformation of cottonseed oil deodorizing distillate
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Study on SO4~(2-) /ZrO2-MoO3 in the integrative transformation of cottonseed oil deodorizing distillate

机译：SO4〜（2-）/ ZrO2-MoO3在棉籽油除臭馏分液一体化转化中的研究

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摘要

With the integrative transformation of non ot-tocopherols, glycerides, free fatty acids, and methyl alcohol in cottonseed oil deodorizing distillate as the target reaction, we prepared highly catalytic SO4~(2-)/ZrO2-MoO3 solid acid catalyst by precipitation-wet impregnation. The optimal conditions for catalyst preparation were then determined by varying sulfuric acid concentration, MoO3 loading factor, calcination temperature, and calcination time. The structure of SO4~(2-)/ZrO2-MoO3 solid acid catalyst was then examined by X-ray diffraction (XRD), Brunauer-Emmett-Teller measurements, scanning electron microscopy, and other methods. Results show that the MoO3 loading factor (percentage weight ratio of MoO3 to ZrO2), impregnation concentration of sulfuric acid, and calcination temperature were the most important factors that influenced catalytic activity. The optimal conditions for catalyst preparation were an MoO3 loading factor of 20%, a sulfuric acid impregnation concentration of 0.75 mol/L, a calcination temperature of 550 °C, and a calcination time of 6 h. The obtained catalyst exhibited the highest catalytic activity under these conditions.
机译：以棉籽油除臭馏出液中的非ot-生育酚，甘油酯，游离脂肪酸和甲醇的整体转化为目标反应，通过湿沉淀法制备了高催化SO4〜（2-）/ ZrO2-MoO3固体酸催化剂。浸渍。然后通过改变硫酸浓度，MoO3负载系数，煅烧温度和煅烧时间来确定催化剂制备的最佳条件。然后通过X射线衍射（XRD），Brunauer-Emmett-Teller测量，扫描电子显微镜和其他方法检查了SO4〜（2-）/ ZrO2-MoO3固体酸催化剂的结构。结果表明，MoO3的负载率（MoO3与ZrO2的重量比），硫酸的浸渍浓度和煅烧温度是影响催化活性的最重要因素。制备催化剂的最佳条件是MoO3的负载率为20％，硫酸的浸渍浓度为0.75 mol / L，煅烧温度为550°C，煅烧时间为6 h。在这些条件下，获得的催化剂表现出最高的催化活性。

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