ABSTRACT γ-Al2O3 was incorporated with SiO2 and used as carrier to support Ni and Cu oxides for catalytic ozonation of heavy oil produced water. The change of catalytic activity was in accordance with that of surface hydroxyl density after incorporation or reuse of catalysts. Nitrogen adsorption and X-ray power diffraction analysis indicated that the specific surface area decreased and the mineral phase and crystal structure of metal oxides unchanged after incorporation. The results confirmed that the neutral surface hydroxyl groups of the carrier were the active sites during catalytic ozonation. Increasing of surface hydroxyl could be another way of improving the catalytic efficiency of catalytic ozonation. Graphic Abstract

中文翻译：

---

掺入氧化铝表面羟基对重油采出水催化臭氧化的作用

摘要 γ-Al2O3 与 SiO2 结合并用作载体以负载 Ni 和 Cu 氧化物，用于重油采出水的催化臭氧化。催化活性的变化与催化剂掺入或重复使用后表面羟基密度的变化一致。氮吸附和X射线功率衍射分析表明，掺入后比表面积减小，金属氧化物的矿物相和晶体结构未发生变化。结果证实载体的中性表面羟基是催化臭氧化过程中的活性位点。增加表面羟基可能是提高催化臭氧化催化效率的另一种方式。图形摘要