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首页> 外文期刊>RSC Advances >Synthesis and characterization of sulfonated mesoporous NiO-ICG core-shell solid sphere catalyst with superior capability for methyl ester production
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Synthesis and characterization of sulfonated mesoporous NiO-ICG core-shell solid sphere catalyst with superior capability for methyl ester production

机译：磺化介孔NiO-ICG核心 - 壳固体球催化剂具有优异的甲酯生产能力的合成与表征

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In the present research, a mesoporous NiO core-shell solid sphere was hydrothermally synthesized, using polyethylene glycol (PEG; 4000) as a surfactant and incomplete carbonized glucose (ICG) as a template. Then, thermal decomposition of ammonium sulphate was employed to convert the as-synthesized material to sulfonated mesoporous NiO-ICG catalyst, in order to accelerate conversion of waste cooking palm oil (WCPO) into ester. The structural, textural, morphological, and thermal characteristics of the synthesized sulfonated mesoporous NiO-ICG catalyst were evaluated using X-ray diffraction (XRD), Raman spectroscopy, temperature programed desorption (TPD), Brunauer-Emmet-Teller (BET), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM). Furthermore, the effect of different reaction parameters against reaction time were investigated. Under the optimal transesterification conditions; catalyst loading of 1 wt%, methanol to WCPO ratio of 9 : 1, operation temperature of 100 degrees C and mixing intensity of 450 rpm, an optimum ester yield of 95.6% was achieved. Additionally, a recyclability study proved that the spent catalyst was highly potential to be reused for nine successive transesterification reactions without further treatment. Finally, the physicochemical characteristics of the produced WCPO methyl ester were evaluated which were highly in accordance with both European (EN; 14214) and American Standards for Testing Materials (ASTM; D6751) specifications.
机译：在本研究中，使用聚乙二醇（PEG; 4000）作为表面活性剂和不完全碳化葡萄糖（ICG）作为模板，将介孔NiO核 - 壳固体球体加热合成。然后，采用硫酸铵的热分解将尽可化的材料转化为磺化的介孔NiO-ICG催化剂，以便将废物烹饪棕榈油（WCPO）的转化为酯。使用X射线衍射（XRD），拉曼光谱法，温度编程解吸（TPD），Brunauer-Emmet-exers（Bet），热升降机（TPD）评估合成的磺化介孔NiO-ICG催化剂的结构，纹理，形态学和热特性。分析（TGA）和透射电子显微镜（TEM）。此外，研究了不同反应参数抵抗反应时间的影响。在最佳酯交换条件下;催化剂负载量为1wt％，甲醇至WCPO比为9：1，操作温度为100摄氏度，混合强度为450rpm，最佳酯产率为95.6％。另外，可再循环性研究证明，废催化剂具有高潜力，在没有进一步处理的情况下为九次连续酯交换反应重复使用。最后，评估了生产的WCPO甲酯的物理化学特性，这是根据欧洲（EN; 14214）和美国测试材料标准（ASTM; D6751）规格的高度高度评价。

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    《RSC Advances》 |2019年第54期|共10页
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  • 正文语种 eng
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