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首页> 外文会议>Annual World Conference on Carbon >SOLVENT-BASED VS. SOLVENT-FREE SAMPLE PREPARATION METHODS FOR THE QUANTITATIVE ANALYSIS OF PETROLEUM PITCH OLIGOMERS BY MALDI MASS SPECTROMETRY
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SOLVENT-BASED VS. SOLVENT-FREE SAMPLE PREPARATION METHODS FOR THE QUANTITATIVE ANALYSIS OF PETROLEUM PITCH OLIGOMERS BY MALDI MASS SPECTROMETRY

机译：基于溶剂的VS.通过MALDI质谱法测量石油沥青低聚物定量分析的无溶剂样品制备方法

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摘要

Petroleum pitches are obtained from the thermal polymerization of an aromatic decant oil, a byproduct of the catalytic cracking of the heavy gas oil fraction of crude oil. As shown in Fig. 1, these materials are oligomeric in nature, with a molecular weight (mol wt) that extends from about 200 to more than 1000. Petroleum pitches consist of polycyclic aromatic hydrocarbons (PAHs) with primarily methyl group substitutions to their backbones and can serve as raw materials for a wide range of carbon products, such as high thermal conductivity carbon fibers and high performance carbon-carbon composites. Thies and co-workers have been investigating the technique of dense-gas extraction (DGE) for separating pitches into fractions of well-defined molecular weight distribution (MWD), to which advanced characterization methods, such as Matrix Assisted Laser Desorption/Ionization (MALDI) mass spectrometry, can be applied.
机译：石油沥青是从芳香蒸馏油的热聚合中获得的，副产物的副产品的催化裂化的原油的催化裂化。如图1所示。如图1所示，这些材料本质上是寡聚，其分子量（摩尔重量）延伸为约200至超过1000.石油沥青组成，由主要甲基取代的多环芳烃（PAH）组成它们的骨架并且可以用作各种碳产品的原料，例如高导热碳纤维和高性能碳复合材料。养分和同事研究了致密气体提取（DGE）的技术，用于将间距分离成明确定义的分子量分布（MWD）的级分，如先进的表征方法，例如基质辅助激光解吸/电离（MALDI ）质谱可以应用。

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