Laboratory for Chemical Technology, Ghent University, Technologiepark 918, 9052 Zwijnaarde, Belgium.
J Chromatogr A. 2012 Sep 28;1257:131-40. doi: 10.1016/j.chroma.2012.07.035. Epub 2012 Jul 28.
Bio-oils produced by fast pyrolysis of lignocellulosic biomass have proven to be a promising, clean, and renewable energy source. To better assess the potential of using bio-oils for the production of chemicals and fuels a new comprehensive characterization method is developed. The combination of the analyical power of GC×GC-FID and GC×GC-TOF-MS allows to obtain an unseen level of detail for both crude and hydrotreated bio-oils originated from pine wood biomass. The use of GC×GC proves to be essential to capture the compositional differences between crude and stabilized bio-oils. Our method uses a flame ionization detector to quantify the composition, while GC×GC-TOF-MS is used for the qualitative analysis. This method allows quantification of around 150 tentatively identified compounds, describing approximately 80% of total peak volume. The number of quantified compounds in bio-oils is increased with a factor five compared to the present state-of-the-arte. The necessity of using multiple internal standards (dibutyl ether and fluoranthene) and a cold-on column injector is also verified.
由木质纤维素生物质快速热解产生的生物油已被证明是一种有前途的清洁可再生能源。为了更好地评估生物油在化学品和燃料生产方面的潜力，开发了一种新的综合特性描述方法。GC×GC-FID 和 GC×GC-TOF-MS 的分析能力相结合，使我们能够对源自松木生物质的粗制和加氢处理生物油获得前所未有的细节水平。GC×GC 的使用被证明对于捕捉粗制和稳定化生物油之间的组成差异至关重要。我们的方法使用火焰电离检测器来定量组成，而 GC×GC-TOF-MS 则用于定性分析。该方法可以定量约 150 种暂定鉴定的化合物，描述了总峰面积的约 80%。与现有技术相比，生物油中定量化合物的数量增加了五倍。还验证了使用多种内标（二丁醚和荧蒽）和冷柱上进样器的必要性。
