In situ preparation of well-dispersed CuO nanocatalysts in heavy oil for catalytic aquathermolysis

• 作 者: Ming Chen Chen Li Guo-Rui Li Yan-Ling Chen Cheng-Gang Zhou
• 机 构: Faculty of Materials Science and Chemistry,China University of Geosciences, Wuhan 430074,People’s Re
• 出 处: 石油科学（英文版）
• 发表日期: 2019年2期
• 关键词: Cu(OH)2-contained microemulsion In situ preparation CuO nanocatalyst Catalytic v

We developed an in situ synthesis strategy for preparing well-dispersed CuO nanoparticles as aquathermolysis catalyst for viscosity reduction in Shengli heavy oil (China).A Cu(OH)2-contained microemulsion was employed as a carrier to disperse the precursor Cu(OH)2 to the heavy oil phase.Under aquathermolysis condition (240 ℃,2.5 MPa of N2),the Cu(OH)2 precursors would first be converted in situ to well-crystallized and size-homogeneous CuO nanoparticles naturally,catalyzed by which the viscosity of Shengli heavy oil could be reduced as much as 94.6％;simultaneously,22.4％ of asphaltenes were converted to light components.The agglomeration of the in situ prepared monoclinic CuO nanoparticles could be negligible throughout the catalytic reaction.Based on the characterization results of 1H NMR,elemental analysis and GC-MS of oil samples before and after catalytic aquathermolysis,the mechanism for viscosity reduction of heavy oil in the catalytic system was investigated.