The immediate catalytic conversions of pyrolytic bio-oils from pine sawdust and soybean shell over mesoporous catalysts (silica, alumina, and silica-alumina) and their combinations with Y zeolite, were studied. The effect of mesoporosity and acidity on the bio-oil deoxygenation and conversion into hydrocarbons was investigated. Pyrolysis and immediate catalytic conversion of bio-oil were performed in an integrated pyrolysis–upgrading reactor, for 7 min under a 30-ml/min flow of nitrogen at 550 °C. Important differences were observed in the conversion of the bio-oils, according to the composition of the raw biomasses. Pine sawdust bio-oil produced more coke and less hydrocarbons in the range of gasoline than soybean shell bio-oil over all the catalysts. Mesoporous catalysts showed conversion and deoxygenation between 14 and 29 percentage points higher with the more acidic solid (SiO₂-Al₂O₃) in the case of pine sawdust bio-oil and between 2 and 10 percentage points higher with the solid having the highest specific surface area (SiO₂) in the case of soybean shell bio-oil. Among the compound catalysts, the best performance for the case of pine sawdust corresponded to the catalyst with the highest mesoporosity (Y/SiO₂), while for soybean shell corresponded to the most acidic catalysts (Y/Al₂O₃ and Y/SiO₂-Al₂O₃). Soybean shell bio-oil showed more low molecular weight compounds (less than 130 g mol⁻¹), which diffuse more easily in the zeolite channels, thus favoring conversion and deoxygenation mechanisms. On the contrary, for pine sawdust bio-oil, the surface area contributed by the mesopores in the matrix played a key role in pre-cracking bulky molecules.

研究了来自松木屑和大豆壳的热解生物油在介孔催化剂（二氧化硅、氧化铝和二氧化硅-氧化铝）上的直接催化转化及其与 Y 沸石的组合。研究了介孔度和酸度对生物油脱氧和转化为烃的影响。生物油的热解和立即催化转化在集成的热解-升级反应器中进行，在 550°C 下，在 30 毫升/分钟的氮气流下进行 7 分钟。根据原始生物质的组成，在生物油的转化中观察到了重要差异。在所有催化剂中，松木屑生物油比大豆壳生物油在汽油范围内产生更多的焦炭和更少的碳氢化合物。₂ -Al ₂ O ₃ ) 在松木屑生物油的情况下高出 2 到 10 个百分点，而在大豆壳生物油的情况下，固体具有最高的比表面积 (SiO ₂ )。在复合催化剂中，松木屑的最佳性能对应于具有最高介孔率（Y/SiO ₂）的催化剂，而大豆壳对应于酸性最强的催化剂（Y/Al ₂ O ₃和Y/SiO 2 ）。₂ -Al ₂ O ₃ )。大豆壳生物油显示出更多的低分子量化合物（小于 130 g mol ^-1)，更容易在沸石通道中扩散，从而有利于转化和脱氧机制。相反，对于松木屑生物油，基质中介孔贡献的表面积在预裂大分子中起着关键作用。