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Preparation of carbon nanofibers/carbon foam monolithic composite from coal liquefaction residue

机译:由煤液化残渣制备碳纳米纤维/碳泡沫单块复合材料

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摘要

Carbon nanofibers/carbon foam composites that are made by growing carbon nanofibers (CNFs) on the surface of a carbon foam (CF) have been prepared from coal liquefaction residues (CLR) by a procedure involving supercritical foaming, oxidization, carbonization, and catalytic chemical vapour deposition (CCVD) treatment. These new carbon/carbon composites were examined using SEM, TEM and XRD. The results show that the as-made CF has a structure with cell sizes of 300-600 urn. X-ray diffraction studies show that iron-containing contaminates are present in the CLR. However, these species may act as a catalyst in the CCVD process as established in the literature. After the CCVD treatment, the cell walls of CF are covered by highly compacted CNFs that have external diameters of about 100 nm and lengths of several tens of micrometers. This work may open a new way for direct and effective utilization of the CLR.
机译:碳纳米纤维/碳泡沫复合材料是通过在超临界发泡,氧化,碳化和催化化学过程中从煤液化残渣(CLR)制备碳纳米纤维/碳泡沫复合材料而制成的,该碳纳米纤维/碳泡沫复合材料是在碳泡沫(CF)表面上生长的。气相沉积(CCVD)处理。使用SEM,TEM和XRD检查了这些新的碳/碳复合材料。结果表明,制成的CF具有泡孔大小为300-600μm的结构。 X射线衍射研究表明CLR中存在含铁污染物。然而,如文献所建立的,这些物质可以在CCVD工艺中充当催化剂。 CCVD处理后,CF的细胞壁被高度紧实的CNF覆盖,其外径约为100 nm,长度为数十微米。这项工作可能为直接和有效利用CLR开辟一条新途径。

著录项

  • 来源
    《Fuel》 |2010年第5期|p.1169-1171|共3页
  • 作者单位

    Carbon Research Laboratory, Center for Nano Materials and Science, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, P.O. Box 49, Dalian 116012, China;

    Carbon Research Laboratory, Center for Nano Materials and Science, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, P.O. Box 49, Dalian 116012, China;

    Carbon Research Laboratory, Center for Nano Materials and Science, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 158 Zhongshan Road, P.O. Box 49, Dalian 116012, China Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian 116023, China;

    aboratory of Fiber Materials and Modern Textile, the Crowing Base for State Key Laboratory, Qingdao University, Qingdao 266071, 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

    carbon foam; carbon nanofibers; carbon/carbon composite; synthesis; coal liquefaction residue;

    机译:碳泡沫碳纳米纤维碳/碳复合材料合成;煤液化残渣;

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