甲酸钙辅助催化热解松木以提高双金属改性 HZSM-5 上单环芳烃的产量。
Calcium formate assisted catalytic pyrolysis of pine for enhanced production of monocyclic aromatic hydrocarbons over bimetal-modified HZSM-5.
机构信息
National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China.
National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China.
出版信息
Bioresour Technol. 2020 Nov;315:123805. doi: 10.1016/j.biortech.2020.123805. Epub 2020 Jul 10.
An efficient process was developed to selectively produce monocyclic aromatic hydrocarbons (MAHs) from ex-situ catalytic fast pyrolysis (CFP) of pine assisted with calcium formate (CF) over bimetal-modified HZSM-5. Mo and another metal (Mg, Ga or Zn) were used to modify the HZSM-5, and the as-synthesized bimetal-modified HZSM-5 catalysts were utilized for both pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and lab-scale CFP tests with CF as a hydrogen donor to selectively obtain MAHs. The results revealed that the presence of CF and Mg-Mo modified HZSM-5 (0.5Mg1Mo/HZ) exhibited excellent capability for MAHs production with tiny generation of polycyclic aromatic hydrocarbons (PAHs). The maximum MAHs yield attained 12.79 wt% at 650 °C from Py-GC/MS with the CF-to-pine (CF-to-PN) ratio of 3 and catalyst-to-pine (CA-to-PN) ratio of 11, and became 9.67 wt% from lab-scale device with CF-to-PN and CA-to-PN ratios of 0.5 and 4, respectively. In addition, compared with HZSM-5, 0.5Mg1Mo/HZ possessed better anti-deactivation ability.
开发了一种从原位催化快速热解（CFP）的松树辅助甲酸钙（CF）中选择性生产单环芳烃（MAHs）的有效方法，该方法使用双金属改性 HZSM-5 进行。使用 Mo 和另一种金属（Mg、Ga 或 Zn）对 HZSM-5 进行改性，并用合成的双金属改性 HZSM-5 催化剂进行热解-气相色谱/质谱（Py-GC/MS）和实验室规模的 CFP 测试，以 CF 作为供氢体来选择性获得 MAHs。结果表明，CF 和 Mg-Mo 改性 HZSM-5（0.5Mg1Mo/HZ）的存在具有出色的 MAHs 生产能力，几乎没有多环芳烃（PAHs）的生成。在 Py-GC/MS 中，CF 与松树（CF 与 PN）的比例为 3，催化剂与松树（CA 与 PN）的比例为 11 时，最大 MAHs 收率为 650°C 时的 12.79wt%，在实验室规模装置中，CF 与 PN 和 CA 与 PN 的比例分别为 0.5 和 4 时，最大 MAHs 收率为 9.67wt%。此外，与 HZSM-5 相比，0.5Mg1Mo/HZ 具有更好的抗失活能力。
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