Infrared spectroscopy of some carbon-based materials relevant in combustion: Qualitative and quantitative analysis of hydrogen
Infrared spectroscopy of some carbon-based materials relevant in combustion: Qualitative and quantitative analysis of hydrogen
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DOI：
10.1016/j.carbon.2014.03.014
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发表时间：
2014-08
期刊：
影响因子：
10.9
通讯作者：
C. Russo;F. Stanzione;A. Tregrossi;A. Ciajolo
中科院分区：
文献类型：
--
作者：
C. Russo;F. Stanzione;A. Tregrossi;A. Ciajolo
建立了基于红外光谱的芳香族和脂肪族氢的定量分析的详细程序，并对由有机前体（萘沥青）和/或燃烧领域中的相关物（沥青质、碳颗粒物、炭黑）产生的一些碳基材料进行了实施，其H/C原子比范围为0.1至1。定量FT-IR分析涉及C单键H振动区域中的光谱解卷积和具有适合于C单键H伸缩（3100-2800 cm−1）和芳香族C单键H弯曲（900-700 cm−1）区域的详细峰-峰分析的光谱特性的各种标准物质的校准因子。通过定量FT-IR分析和元素分析获得的H/C原子比之间的良好一致性表明该方法具有合理的可靠性。开发的FT-IR定量技术的主要价值还依赖于区分不同种类的脂肪族和芳香族氢的能力。对碳材料中CH_3、CH_2和C单键H以及单、二、三、四芳香氢的详细定量分析，也可用于推断碳材料中C单键C骨架的芳香部分的结构。
A detailed procedure for the quantitative analysis of aromatic and aliphatic hydrogen based on infrared spectroscopy was set up and implemented on some carbon-based materials produced from organic precursors (naphthalene pitch) and/or relevant in combustion field (asphaltenes, carbon particulate matter, carbon black), spanning in the H/C atomic ratio range from 0.1 to 1. The quantitative FT-IR analysis involved the spectral deconvolution in the Csingle bondH vibrations regions and the calibration factors of diverse standard species having spectral characteristics suitable for the detailed peak-to-peak analysis of the Csingle bondH stretching (3100–2800 cm−1) and aromatic Csingle bondH bending (900–700 cm−1) regions. The good agreement between the H/C atomic ratio obtained by quantitative FT-IR analysis and elemental analysis showed a reasonable reliability of the procedure. The major value of the developed FT-IR quantitative technique relies also on the capacity of discriminating between the different kinds of aliphatic and aromatic hydrogen. The quantitative and detailed analysis of hydrogen in form of CH3, CH2and Csingle bondH groups and in form of solo, duo and trio/quatro aromatic hydrogens showed to be useful also for inferring the structure of the aromatic moieties constituting the Csingle bondC backbone of carbon materials.