ZSM - 5作为甘油转化为单月桂酸甘油催化剂的脱铝及表征

D. Anggoro, Riko Rikardo Putra, Herawati Oktaviani, Lutfi Af’idatul Kamilah, F. Chamdani
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引用次数: 3

摘要

单月桂酸甘油(GML)是一种天然存在的脂肪酸,广泛应用于食品、化妆品和顺势疗法补充剂中。甘油是一种化合物甘油酯,是生物柴油生产过程中酯交换反应的副产品。甘油被转化为甘油衍生物,具有更大的价值为单月桂酸甘油(GML)。GML是一种天然存在的脂肪酸,广泛应用于食品、化妆品和顺势疗法补充剂。所使用的催化剂之一是ZSM-5。脱铝是用来改变沸石的酸性。本研究分为几个阶段,先用H2SO4对ZSM-5分子筛进行脱铝,在110℃下干燥1小时,然后在550℃下煅烧4小时。表征催化剂,通过吸附氨和吡啶来测试催化剂的酸度。沸石的酸度用每克催化剂中氨或吡啶的毫摩尔来表示。采用气相色谱-质谱法对脱铝后的单月桂酸酯进行合成,测定其分子量,并测定其纯度。在最佳脱铝温度为40 ~ 60℃,脱铝时间为2 ~ 5 h的条件下,得到的试验结果。影响ZSM-5酸度和GML产率的因素有酸浓度、脱铝温度和脱铝时间。关键词:甘油,单月桂酸甘油,脱铝,ZSM - 5。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
DEALUMINATION AND CHARACTERIZATION OF ZSM - 5 AS CATALYST FOR GLYCEROL CONVERSION TO GLYCEROL MONOLAURATE
Glycerol Monolaurate (GML) is a naturally occurring fatty acid widely utilized in food, cosmetics, andhomeopathic supplements. Glycerol is a compound glycerides, a byproduct of biodiesel production from the transesterification process. Glycerol is converted to glycerol derivative product that has more value as Glycerol Monolaurate (GML).GML is a naturally occurring fatty acid widely utilized in food, cosmetics, andhomeopathic supplements.One of the catalyst that had beenused is ZSM-5. Dealumination is used to change the acidity of the zeolite. This study consists of several stages, there are dealumination of zeolite ZSM-5 using H2SO4, drying at 110 ° C for 1 hour, Then calcination at a temperature of 550 ° C for 4 hours. Characterization catalyst to testing the acidity of the catalyst by absorption of ammonia and pyridine. Acidity of Zeolite is expressed in the mmol of ammonia or pyridine per gram of catalyst. Synthesis of monolaurate with dealuminated result are performed by GC-MS analysis, it’s to determine the molecular weight and to show a purity of Glycerol Monolaurate. Testing results obtained in the optimum conditions at dealumination temperature and dealumination time respectively are 40-60 0C and 2-5 hours. The dealumination variables are acid concentration, temperature and time of dealumination affecting ZSM-5 acidity and % yield of GML. The acidity affecting the yield% of Glycerol monolaurate produced Keywords :Glycerol, Glycerol Monolaurate, dealumination, ZSM - 5.
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