Abstract The certain challenge for the utilization of bio-oil is to investigate the nature and formation of reactive large molecular (heavy) components (>200 Da) in bio-oil. In order to investigate the chemical composition of the heavy components in the bio-oils from the pyrolysis of cellulose, hemicellulose and lignin, the molecular formulas of the heavy compounds and the large aromatic structures were obtained based on the results from the Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) and the ultraviolet fluorescence (UV-F) spectrometer. The results indicated that both the oxygen content and yield of the heavy components showed the highest in the cellulose-oil and the lowest in the lignin-oil. The large molecular compounds were formed mainly via the recombination of the O-containing species, which could be changed at different temperatures and heating rates. Large amount of heavy saccharide and phenolic species existed in cellulose-oil and hemicellulose-oil, while almost no saccharide species and little phenolic species were detected in the lignin-oil. The main heavy components in the lignin-oil were lipids rather than the phenolic species. The heavy components in the bio-oil from the biomass should be mainly derived from the pyrolysis of the cellulose individually or the interactions among the three components.

中文翻译：

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评估来自纤维素、半纤维素和木质素在缓慢和快速加热速率下热解的生物油中重组分的化学成分

摘要 生物油利用的一定挑战是研究生物油中活性大分子（重）组分（>200 Da）的性质和形成。为了研究纤维素、半纤维素和木质素热解产生的生物油中重组分的化学组成，基于傅里叶变换离子回旋加速器的结果，获得了重组分的分子式和大芳香结构。共振质谱仪 (FT-ICR MS) 和紫外荧光 (UV-F) 光谱仪。结果表明，无论是含氧量还是重组分收率均以纤维素油最高，木质素油最低。大分子化合物主要是通过含氧物质的重组形成的，可以在不同的温度和加热速率下改变。纤维素油和半纤维素油中含有大量的重糖和酚类物质，而木质素油中几乎没有检测到糖类和酚类物质。木质素油中的主要重组分是脂质而不是酚类物质。来自生物质的生物油中的重组分应主要来自纤维素单独的热解或三种组分之间的相互作用。