Synergistic Effect between Zr-MOF and Phosphotungstic Acid for Oxidative Desulfurization

• 作 者: Zong Mengya Zhao Yutong Fan Cunzheng Wang Danhong
• 机 构: TKL of Metal and Molecule Based Material Chemistry,National Institute for Advanced Materials,School
• 出 处: 中国炼油与石油化工（英文版）
• 发表日期: 2020年4期
• 关键词: phosphotungstic acid Zr-MOF oxidative desulfurization synergistic effect oxygen

PTA/UiO-66 composites were successfully synthesized by the hydrothermal method.The results showed that the synergistic effect between phosphotungstic acid(PTA)and UiO-66 could enhance the oxidative desulfurization(ODS)activity.The XRD results proved that UiO-66 retained its structure in the PTA/UiO-66 composites.The SEM results showed that the PTA/UiO-66 catalysts exhibited regular octahedral shape.The Raman spectra revealed that PTA in the composites retained the Keggin structure.The XPS results showed that the electron transfer occurred from Zr-MOF to PTA.The ODS reaction mechanism was discussed.Electrons transfer from Zr-MOF to PTA can promote the generation of active species(·OH)and thus enhance the ODS activity.This explanation can be confirmed by the formation of oxygen vacancy and W1 as revealed by the XPS analysis.