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首页> 外文期刊>Fuel >One step synthesis of N-doped activated carbons derived from sustainable microalgae-NaAlg composites for CO_2 and CH_4 adsorption
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One step synthesis of N-doped activated carbons derived from sustainable microalgae-NaAlg composites for CO_2 and CH_4 adsorption

机译：一步法合成源自可持续微藻-NaAlg复合材料的N掺杂活性炭，用于CO_2和CH_4吸附

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摘要

N-doped activated carbons were obtained by using microalgae-sodium alginate (NaAlg) as renewable precursors due to the high nitrogen content of microalgae. One simple carbonization process with flowing N-2 gas only and no any other chemical agents or gases was used to prepare the activated carbons. Texture parameters, surface morphology and chemical properties of obtained activated carbons as well as the details of composition between microalgae and NaAlg have been investigated. By way of composition of microalgae and NaAlg, the tiny microalgae cells dispersed homogeneously inside the NaAlg and activated carbons with large specific surface areas over 1000m(2)/g were obtained. With high N content and appropriate pore size distributions, resulted activated carbons exhibited a very high CO2 adsorption capacity of 3.75 mmol/g, 1 bar, 25 degrees C and CH4 adsorption capacity of 7.27 mmol/g, 20 bar, 25 degrees C, which was much higher than commercial available coconut activated carbons (SBET 1350m(2)/g). The results suggested that microalgae-NaAlg composites derived N-doped activated carbons to be promising adsorbents for CO2 and CH4 and the composition method may provide us new idea for greener activated carbon preparation.
机译：由于微藻的高氮含量，通过使用微藻藻酸钠（NaAlg）作为可再生前驱体获得了N掺杂的活性炭。仅使用流动的N-2气体且不使用任何其他化学试剂或气体的一种简单的碳化方法来制备活性炭。研究了获得的活性炭的织构参数，表面形态和化学性质，以及微藻和NaAlg之间的组成细节。通过微藻和NaAlg的组成，获得了均匀分布在NaAlg内的微小微藻细胞和比表面积超过1000m（2）/ g的活性炭。在高N含量和适当的孔径分布的情况下，所得的活性炭显示出非常高的CO2吸附容量，为3.75 mmol / g，1 bar，25℃，而CH4吸附容量为7.27 mmol / g，20 bar，25℃，其远远高于市售的椰子活性炭（SBET 1350m（2）/ g）。结果表明，微藻-NaAlg复合材料衍生的N掺杂的活性炭是有希望的CO2和CH4的吸附剂，其组成方法可以为绿色环保的活性炭制备提供新的思路。

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  • 来源
    《Fuel》 |2018年第1期|574-581|共8页
  • 作者

    Wu Yaqi; Chen Zhaoan; Liu Yanan; Xu Yunpeng; Liu Zhongmin;

  • 作者单位

    Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;

    Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;

    Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;

    Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;

    Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microalgae-NaAlg composites; One step carbonization; N-doped activated carbons; CO2 adsorption; CH4 adsorption;

    机译：微藻-NaAlg复合材料;一步碳化;N掺杂活性炭;CO2吸附;CH4吸附;

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