Abstract In order to promote efficient production of hydrocarbons, catalytic fast pyrolysis (CFP) of rice husk (RH) over catalysts is performed using Py-GC/MS. The catalyst is hierarchical micro-mesoporous composite molecular sieve prepared under different conditions including different concentrations (1.5 mol/L, 2.0 mol/L, 2.5 mol/L, 3.0 mol/L) of NaOH solution, different mass fraction of cetyltrimethylammonium bromide (CTAB) solution, different temperatures (90℃, 100℃, 110℃, 120℃) and durations (12 h, 24 h, 36 h). The fabricated hierarchical catalyst with HZSM-5 structure as the core and MCM-41 structure as the shell is characterized using N2 adsorption-desorption measurement and transmission electron microscopy. As the experimental results suggest, the highest value of total peak area of all the chemical compounds is obtained at 600℃. The fabricated hierarchical catalyst exhibit pronounced deoxygenation and excellent selectivity of aromatics. The maximum relative abundance of hydrocarbons (54%), maximum relative abundance of aromatics (39%) and value of selectivity of monocyclic aromatics (65%) are obtained by comparison with different hierarchical catalysts. Besides, the catalyzed transformation of large oxygenated compounds into hydrocarbons can be improved as a function of significant activation of hydrocarbon pool.

中文翻译：

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分级微介孔复合分子筛催化稻壳快速热解：分析型 Py-GC/MS 研究

摘要 为了促进碳氢化合物的高效生产，利用 Py-GC/MS 对稻壳 (RH) 进行催化快速热解 (CFP)。该催化剂是在不同浓度（1.5 mol/L、2.0 mol/L、2.5 mol/L、3.0 mol/L）NaOH溶液、不同质量分数的十六烷基三甲基溴化铵（CTAB）条件下制备的分级微介孔复合分子筛。 ) 溶液，不同温度（90℃、100℃、110℃、120℃）和持续时间（12 小时、24 小时、36 小时）。制备的以HZSM-5结构为核、MCM-41结构为壳的分级催化剂使用N2吸附-解吸测量和透射电子显微镜进行表征。实验结果表明，所有化合物的总峰面积在 600℃ 时达到最高值。所制备的分级催化剂表现出明显的脱氧作用和优异的芳烃选择性。通过与不同分级催化剂的比较，得到烃的最大相对丰度（54%）、芳烃的最大相对丰度（39%）和单环芳​​烃的选择性值（65%）。此外，作为烃池显着活化的函数，可以改进大含氧化合物向烃的催化转化。