Abstract 5-Na/ZnO loaded SBA-15 has been prepared by one-pot method in atmospheric conditions (without employing hydrothermal treatment) and following wet impregnation method. The prepared catalyst was characterised by using several techniques viz., BET method for determination of surface area, FE-SEM for morphology of catalyst, XPS study to determine the oxidation state of constituent elements. The catalyst was utilised for transesterification from virgin cotton seed oil and the catalyst activity was dependant on its basic strength. Under optimal reaction conditions of catalyst amount 12 wt%, methanol to oil molar ratio of 24:1 at reaction temperature of 65 °C, the prepared catalyst yielded > 98% fatty acid methyl ester in 4 h of reaction duration. The catalyst was able to yield conversion level as good as ∼74% even in 5th cycle after regeneration. Leaching of

中文翻译：

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5-Na/ZnO 掺杂介孔二氧化硅作为可重复使用的固体催化剂，用于通过原始棉籽油的酯交换生产生物柴油

摘要 采用一锅法在常压条件下（不采用水热处理）和湿法浸渍法制备了负载5-Na/ZnO的SBA-15。采用BET法测定表面积、FE-SEM测定催化剂形貌、XPS研究测定组成元素氧化态等多种技术对制备的催化剂进行表征。该催化剂用于初榨棉籽油的酯交换反应，催化剂活性取决于其碱性强度。在催化剂用量为 12 wt%、甲醇与油的摩尔比为 24:1、反应温度为 65 °C 的最佳反应条件下，所制备的催化剂在 4 h 的反应持续时间内产率 > 98% 的脂肪酸甲酯。即使在再生后的第 5 个循环中，该催化剂也能够产生高达 74% 的转化率。浸出