Abstract Analytical pyrolysis-comprehensive two-dimensional gas chromatography/mass spectrometry (Py-GC × GC/MS) was employed for the on-line analysis of cellulose via catalytic pyrolysis with different catalysts and catalytic temperatures to study the products and aromatic hydrocarbons selectivity. The catalysts were subjected to characterization methods, including XRD, TEM, NH3-TPD, to investigate the effects of the physicochemical properties of the catalyst on the product distribution. Results showed that the Ce0.8Zr0.2-xAlxO2 could significantly promote the formation of aromatic hydrocarbons under 400–550 °C. A lower catalytic temperature (≤350 °C) favored the formation of furan compounds, and a higher catalytic temperature (≥450 °C) supported the formation of aromatic hydrocarbons. The relative peak area of the aromatics prepared by using the Ce0.8Zr0.15Al0.05O2 catalyst was the highest being 85.24% at 550 °C. Moreover, the selectivity of the single-ring aromatics, such as benzene, toluene and xylene, were significantly affected by the presence of the Ce0.8Zr0.2-xAlxO2 catalysts. The higher total acidity of Ce0.8Zr0.15Al0.05O2 favored the formation of benzene and toluene. Additionally, the Ce0.8Zr0.15Al0.05O2 catalyst had a great thermal stability. The catalyst recycling tests showed that the Ce0.8Zr0.15Al0.05O2 catalyst can be reused five times to produce aromatic-rich bio-oil via catalytic fast pyrolysis.

中文翻译：

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在 Ce0.8Zr0.2-xAlxO2 催化剂上催化纤维素快速热解生产芳烃：分析 Py-GC × GC/MS

摘要 采用分析热解-综合二维气相色谱/质谱（Py-GC × GC/MS）对不同催化剂和不同催化温度的催化热解纤维素进行在线分析，研究产物和芳烃的选择性。对催化剂进行表征方法，包括XRD、TEM、NH3-TPD，以研究催化剂的理化性质对产物分布的影响。结果表明，Ce0.8Zr0.2-xAlxO2 在 400-550 °C 下能显着促进芳烃的形成。较低的催化温度（≤350℃）有利于呋喃化合物的形成，较高的催化温度（≥450℃）有利于芳烃的形成。使用Ce0.8Zr0.15Al0.05O2催化剂制备的芳烃的相对峰面积在550℃时最高，为85.24%。此外，单环芳烃，如苯、甲苯和二甲苯的选择性受到 Ce0.8Zr0.2-xAlxO2 催化剂存在的显着影响。Ce0.8Zr0.15Al0.05O2 较高的总酸度有利于苯和甲苯的形成。此外，Ce0.8Zr0.15Al0.05O2 催化剂具有很好的热稳定性。催化剂回收试验表明，Ce0.8Zr0.15Al0.05O2催化剂可重复使用5次，通过催化快速热解生产富含芳烃的生物油。2-xAlxO2 催化剂。Ce0.8Zr0.15Al0.05O2 较高的总酸度有利于苯和甲苯的形成。此外，Ce0.8Zr0.15Al0.05O2 催化剂具有很好的热稳定性。催化剂回收试验表明，Ce0.8Zr0.15Al0.05O2催化剂可重复使用5次，通过催化快速热解生产富含芳烃的生物油。2-xAlxO2 催化剂。Ce0.8Zr0.15Al0.05O2 较高的总酸度有利于苯和甲苯的形成。此外，Ce0.8Zr0.15Al0.05O2 催化剂具有很好的热稳定性。催化剂回收试验表明，Ce0.8Zr0.15Al0.05O2催化剂可重复使用5次，通过催化快速热解生产富含芳烃的生物油。