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首页> 外文期刊>Biomass & bioenergy >Activated carbon derived from tea waste: A promising supporting material for metal nanoparticles used as catalysts in hydrolysis of ammonia borane
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Activated carbon derived from tea waste: A promising supporting material for metal nanoparticles used as catalysts in hydrolysis of ammonia borane

机译：来自茶叶废物的活性炭：用于金属纳米颗粒的有前途的支撑材料，其用作氨基硼水解中的催化剂

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摘要

Activated carbons with high porosity and high surface area are promising materials to be used in wide-range applications. They can easily be prepared from various biomass source following by simple and reproducible activation and carbonization steps. In this study, the woody part of tea which is highly available tea waste after the harvesting of tea leaves is considered as the precursor of highly porous activated carbon. In fact, activated carbon with well-ordered porous structure (micropore area = 1614.3 m~2 g~(-1), micropore volume = 1.13 cm~3 g~(-1)) and high surface area (2559 m~2 g~(-1)) was achieved using this tea waste. The obtained activated carbon was used to support cobalt, nickel and copper nanoparticles which were used as catalysts in H_2 generation from aqueous ammonia borane. The results reveal that Co nanoparticles with an average particle size of 3.18 nm on activated carbon provide higher activity (TOF = 7.5 min~(-1)) as compared to nickel (TOF = 4.8 min~(-1)) and copper nanoparticles in this reaction. Herein, we report also the kinetic studies including the effect of temperature, metal concentration and metal loading on the catalytic activity in hydrolysis of ammonia borane.
机译：具有高孔隙率和高表面积的活性炭是在广泛应用中使用的有希望的材料。通过简单可重复的激活和碳化步骤，它们可以轻松地由各种生物量来源制备。在这项研究中，在收获茶叶之后，茶叶的木质部分是高度多孔活性炭的前兆。实际上，活性炭具有良好有序的多孔结构（微孔面积= 1614.3m〜2g〜（-1），微孔体积= 1.13cm〜3g〜（-1））和高表面积（2559 m〜2g 〜（-1））使用这款茶叶造成了达到。所得活性炭用于载体钴，镍和铜纳米颗粒，其用作来自氨基硼水溶液的H_2中的催化剂。结果表明，与镍（TOF = 4.8 min〜（-1））和铜纳米颗粒相比，在活性炭上具有3.18nm的平均粒径为3.18nm的CO纳米粒子提供更高的活性（TOF = 7.5分钟〜（-1））这种反应。在此，我们还报告了动力学研究，包括温度，金属浓度和金属负载对氨基硼水解中催化活性的影响。

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  • 来源
    《Biomass & bioenergy》 |2020年第7期|105589.1-105589.7|共7页
  • 作者

    Serdar Akbayrak; Zehra OEzcifci; Ahmet Tabak;

  • 作者单位

    Department of Chemistry Faculty of Arts and Science Sinop University 57000 Sinop Turkey;

    Department of Chemistry Faculty of Arts and Science Recep Tayyip Erdogan University 53100 Rize Turkey;

    Department of Chemistry Faculty of Arts and Science Sinop University 57000 Sinop Turkey;

  • 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

    Cobalt; Activated carbon; Tea waste; Ammonia borane; Hydrogen;

    机译：钴;活性炭;茶垃圾;氨硼烷;氢;

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