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Synthetic bio-graphene based nanomaterials through different iron catalystsAuthor(s): Qiangu Yan; Jinghao Li; Xuefeng Zhang; Jilei Zhang; Zhiyong Cai
Source: Nanomaterials. 8(10): 840-859.
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
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DescriptionKraft lignin was catalytically graphitized to graphene-based nanostructures at 1000 C under argon atmosphere with four iron catalysts, iron(III) nitrate (Fe-N); iron(II) chloride (Fe-Cl2); iron(III) chloride (Fe-Cl3); and iron(II) sulfate (Fe-S). The catalytic decomposition process of iron-promoted lignin materials was examined using thermalgravimetric analysis and temperature-programmed decomposition methods. The crystal structure, morphology and surface area of produced materials were characterized by means of X-ray diffraction, Raman, scanning electronmicroscopy, high resolution transmission electron microscopy and N2 adsorption–desorption techniques. Experimental results indicated that iron nitrate catalyst had better iron dispersion three other iron salts. Iron nitrate was the most active catalyst among four iron salts. The low activity of iron in iron chloride-promoted samples was because the residual chlorine over iron surfaces prevent iron interaction with lignin functional groups.
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CitationYan, Qiangu; Li, Jinghao; Zhang, Xuefeng; Zhang, Jilei; Cai, Zhiyong. 2018. Synthetic bio-graphene based nanomaterials through different iron catalysts. Nanomaterials. 8(10). 19 p.
Keywordskraft lignin, catalytic thermal decomposition, carbon-based nanomaterials, iron(III) nitrate, iron(II) sulfate, iron(II) chloride, iron(III) chloride
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