Abstract Fast pyrolysis has been recognized as an efficient and feasible way to produce liquid fuels from biomass. For the aim to upgrade the products from fast pyrolysis of hemicellulose, reduced graphene oxide supported Pt nanoparticles (Pt/RGO) was adopted as catalyst for in situ catalytic fast pyrolysis (CFP). Pt/RGO was prepared by one-step thermal reduction method, and further employed as catalyst for in situ CFP of xylan. Online single-photon ionization time-of-flight mass spectrometry was employed to detect the volatile products, and furans were chosen as the model compounds. The experimental results showed that Pt/RGO distinctly increased the intensity of furans products from xylan pyrolysis, as the increase rates were respectively 80.5%, 64.4% and 50.2% in 400 °C, 500 °C and 600 °C. Furthermore, Pt/RGO can accelerate the process of xylan pyrolysis and be effective in eliminating oxygen for furans products. With addition of Pt/RGO, O/C ratio for furans products decreased from 0.38 to 0.32 in 400 °C, 0.37 to 0.32 in 500 °C, and 0.35 to 0.32 in 600 °C, respectively. This work proved that Pt/RGO had the potential to be a highly efficient catalyst for upgrading of the volatile products from in situ CFP of biomass.

中文翻译：

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通过还原氧化石墨烯负载的 Pt 纳米颗粒从木聚糖的原位催化快速热解中升级呋喃

摘要 快速热解已被公认为是一种从生物质中生产液体燃料的有效可行的方法。为了提升半纤维素快速热解产物的质量，采用还原氧化石墨烯负载的 Pt 纳米粒子（Pt/RGO）作为原位催化快速热解（CFP）的催化剂。Pt/RGO 是通过一步热还原法制备的，并进一步用作木聚糖原位 CFP 的催化剂。采用在线单光子电离飞行时间质谱法检测挥发性产物，选择呋喃作为模型化合物。实验结果表明，Pt/RGO 显着提高了木聚糖热解呋喃产物的强度，在 400°C、500°C 和 600°C 下增加率分别为 80.5%、64.4% 和 50.2%。此外，Pt/RGO 可以加速木聚糖的热解过程，并能有效地为呋喃产品消除氧气。随着 Pt/RGO 的加入，呋喃产品的 O/C 比分别从 400°C 的 0.38 降至 0.32、500°C 的 0.37 至 0.32 和 600°C 的 0.35 至 0.32。这项工作证明 Pt/RGO 有潜力成为一种高效催化剂，用于从生物质的原位 CFP 中升级挥发性产物。