Abstract A novel way was put forward with 9,10-dihydroanthracene (DHA) as a solid hydrogen donor to improve the selective production of 4-ethyl phenol (4-EP) from catalytic fast pyrolysis (CFP) of bagasse over activated carbon (AC) catalyst. Both pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and lab-scale CFP experiments were carried out on the 4-EP formation affected by various factors, in order to determine the optimal conditions for 4-EP production. The results indicated that DHA exhibited promising hydrogenation capabilities to improve 4-EP formation. In Py-GC/MS test, the 4-EP reached a maximal yield of 3.21 wt% with its corresponding selectivity of 22.96 % at 350 °C under AC-to-bagasse (AC-to-BA) and DHA-to-bagasse (DHA-to-BA) ratios of 6:1 and 1:5, respectively. Whereas, the maximal 4-EP yield was only 2.18 wt% in the absence of DHA, indicating a yield increase of 47.2 % by DHA. Moreover, lab-scale experiments attained the highest 4-EP yield and the corresponding selectivity of 3.05 wt% and 16.31 % with DHA, compared with the yield of 1.67 wt% without DHA. In addition, the possible hydrogenation mechanism of DHA in facilitating 4-EP formation was revealed.

中文翻译：

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以 9,10-二氢蒽为供氢体的活性炭催化甘蔗渣快速热解 4-乙基苯酚的增产

摘要 提出了一种以 9,10-二氢蒽 (DHA) 为固体供氢体的新方法，以提高甘蔗渣催化快速热解 (CFP) 活性炭 (AC) 选择性生产 4-乙基苯酚 (4-EP) 的效率。 ) 催化剂。对受各种因素影响的 4-EP 形成进行了热解-气相色谱/质谱 (Py-GC/MS) 和实验室规模的 CFP 实验，以确定 4-EP 生产的最佳条件。结果表明，DHA 表现出有希望的氢化能力，以改善 4-EP 的形成。在 Py-GC/MS 测试中，在 AC-to-BAgasse (AC-to-BA) 和 DHA-to-Bagasse 下，4-EP 在 350 °C 下达到了 3.21 wt% 的最大产率和 22.96% 的相应选择性(DHA 与 BA) 的比例分别为 6:1 和 1:5。而最大的 4-EP 产量仅为 2。在不存在 DHA 的情况下增加了 18 wt%，表明 DHA 的产量增加了 47.2%。此外，实验室规模的实验在使用 DHA 时获得了最高的 4-EP 产率和相应的选择性，分别为 3.05% 和 16.31%，而没有 DHA 的产率为 1.67%。此外，揭示了 DHA 促进 4-EP 形成的可能氢化机制。