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首页> 外文期刊>Environmental engineering and management journal >EFFECT OF SYNTHESIS PARAMETERS ON SORPTIVE PROPERTIES OF GLYCEROL-DERIVED MESOPOROUS CARBON
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EFFECT OF SYNTHESIS PARAMETERS ON SORPTIVE PROPERTIES OF GLYCEROL-DERIVED MESOPOROUS CARBON

机译：合成参数对甘油衍生介孔碳吸附性能的影响

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摘要

The effect of synthesis conditions on sorptive properties of glycerol-derived mesoporous carbon materials were studied. Sorption properties of the synthesized carbon-based materials regarding to different adsorbate molecules, as well as water vapors, phenol and methylene blue molecules were analyzed. The sorption capacity of the synthesized mesoporous carbons depends upon synthesis conditions, namely upon pyrolyzing temperature and carbon precursor to silica weight ratio, being determined by the nature of the adsorbate molecule and the chemical and structural properties of carbon-based mesoporous material. The templated mesoporous carbons were synthesized using two different glycerol/silica weight ratios (0.5 and 1) and were pyrolyzed at various temperatures (800°C and 1000°C) to study changes in their textural, structural, morphological and chemical surface properties, as well their sorptive properties. The obtained data showed that both considered parameters, glycerol/silica weight ratio and pyrolysis temperature, are important factors in developing the carbon properties. The variation of above mentioned parameters conduct to a progressive deterioration of the carbon structure, associated with structure shrinking and pore walls breaking. Especially significant changes in the structural properties of the studied mesoporous carbon materials occurred for those heated at 1000 °C, which manifested themselves in a loss of the total pore volume. It was found that the mesoporous carbons exhibited better thermal stability reflected by the presence of residual mesopores and/or nanostructure ordering. The studies show that the adsorption of methylene blue and phenol onto glycerol-derived mesoporous carbon materials is influenced by their surface chemistry given by the synthesis conditions.
机译：研究了合成条件对甘油衍生的介孔碳材料的吸附性能的影响。分析了关于不同吸附分子的合成碳基材料的吸附性能，以及水蒸汽，苯酚和亚甲基蓝色分子。合成的介孔碳的吸附能力取决于合成条件，即在热解温和碳前体与二氧化硅重量比上，通过吸附分子的性质和碳的介孔材料的化学和结构性能确定。使用两种不同的甘油/二氧化硅重量比（0.5和1）合成模板化的中孔碳，并在各种温度（800℃和1000℃）下热解，以研究其纹理，结构，形态和化学表面特性的变化，如他们的吸引力。所获得的数据显示，考虑参数，甘油/二氧化硅重量比和热解温度，是显影碳特性的重要因素。上述参数的变化导致碳结构的渐进性劣化，与结构收缩和孔隙壁断裂相关。特别是在1000℃加热的那些中发生了研究的介孔碳材料的结构性能的显着变化，其在损失的总孔体积中表现出来。发现中孔碳的碳闷通过残留的中孔和/或纳米结构排序而反射的更好的热稳定性。研究表明，将亚甲基蓝和苯酚吸附在甘油衍生的中孔碳材料上受其表面化学的影响，由合成条件给出。

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    Maria Ignat; Liviu Sacarescu; Maria Emiliana Fortuna; Pegie Cool; Valeria Harabagiu;

  • 作者单位

    "Petru Poni" Institute of Macromolecular Chemistry 41A Gr. Ghica Voda Alley 700487lasi Romania Laboratory of Materials Chemistry Chemistry Faculty "Al. I. Cuza" University of lasi Carol I Blvd. No. 11 700506 lasi Romania;

    "Petru Poni" Institute of Macromolecular Chemistry 41A Gr. Ghica Voda Alley 700487lasi Romania;

    "Petru Poni" Institute of Macromolecular Chemistry 41A Gr. Ghica Voda Alley 700487lasi Romania;

    Laboratory of Adsorption and Catalysis University of Antwerpen (CDE) Universiteitsplein 1 2610 Wilrjik Antwerpen Belgium;

    "Petru Poni" Institute of Macromolecular Chemistry 41A Gr. Ghica Voda Alley 700487lasi Romania;

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  • 正文语种 eng
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  • 关键词

    mesoporous carbon; synthesis parameters; sorptive properties;

    机译：中孔碳;合成参数;吸引力;

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