油漆和清漆会损害木材热解油的物理化学特性吗？,Energy & Fuels

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油漆和清漆会损害木材热解油的物理化学特性吗？
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-10-20 , DOI: 10.1021/acs.energyfuels.1c02568
William de Rezende Locatel ₁ , Dorothée Laurenti ₁ , Yves Schuurman ₁ , Nolven Guilhaume ₁

Affiliation

使用来自拆除木材的热解油是从废木材生产燃料或化学品的有趣选择。这项工作研究了包含在由木材的热解或之后获得的生物油的性质的各种潜在的污染物油漆和清漆的效果易地使用HZSM-5催化剂热解蒸气的催化。分析了油漆和清漆，并确定了它们的主要成分。干净的山毛榉木材样品用商业油漆和清漆以及单独的主要无机化合物（TiO ₂、CaCO ₃和 BaSO _{4 ）}进行浸渍) 存在于油漆和清漆中。这些受污染的木材样品被热解，形成的气体、液体和固体产品被彻底表征，并与从干净木材中获得的产品进行比较。结果表明，矿物污染物保留在炭中，并且通过热解获得的热解油没有因木材上污染物的存在而显着改性。在易地在催化热解实验中，HZSM-5 催化剂促进了一些完全脱氧的芳香族化合物的形成，这些化合物在没有催化剂的情况下是无法获得的。然而，用商业油漆和清漆浸渍的木材生产的生物油含有较少完全脱氧的化合物。这种影响与油漆和清漆中存在的无机化合物无关，可能源于其配方中存在的聚合有机成分。

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Can Paints and Varnish Impair the Physicochemical Properties of Wood Pyrolysis Oils?

The use of pyrolysis oils from demolition woods is an interesting option to produce fuels or chemicals from waste wood. This work investigated the effect of paints and varnish that contain various potential contaminants on the properties of bio-oils obtained by thermal pyrolysis of wood or after ex situ catalysis of the pyrolysis vapors using a HZSM-5 catalyst. The paints and varnish were analyzed, and their main components were identified. Clean beech wood samples were impregnated with commercial paints and varnish and also individually with the main inorganic compounds (TiO₂, CaCO₃, and BaSO₄) found in the paints and varnish. These contaminated wood samples were pyrolyzed, and the gas, liquid, and solid products formed were thoroughly characterized and compared to the products obtained from clean wood. The results show that the mineral contaminants remained in the chars and that the pyrolysis oils obtained by thermal pyrolysis were not significantly modified by the presence of contaminants on the wood. In ex-situ-catalyzed pyrolysis experiments, the HZSM-5 catalyst promoted the formation of some fully deoxygenated aromatic compounds, which were not obtained without a catalyst. However, the bio-oil produced from wood impregnated with commercial paints and varnish contained less fully deoxygenated compounds. This effect was not related to the mineral compounds present in the paints and varnish and could originate from the polymeric organic components present in their formulations.

更新日期：2021-11-04

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