铈掺杂CuO-SiO_2复合氧化物催化氧化脱除苯并噻吩的性能

Removal Benzothiophene by Catalytic Oxidation of Cerium-doped CuO-SiO_2 Mixed Oxide

本文采用铈掺杂的CuO-SiO_2复合氧化物作为催化剂,双氧水为氧化剂,以氧化脱除模拟油中苯并噻吩反应为探针,通过单因素实验考察氧化剂用量、溶剂用量、催化剂用量、氧化温度和氧化时间等因素对脱硫效果的影响。研究结果表明,铈掺杂的0.02CeO_2-0.1CuO-SiO_2复合氧化物比表面积比未掺杂的比表面积略高,在模拟油用量10 m L、复合氧化物催化剂用量0.10 g、溶剂乙腈用量2.0 m L,氧化剂30%H_2O_20.2 m L、氧化反应温度65℃的条件下反应60 min,脱硫率为88.23%。

This paper focuses on the CuO-SiO_2 mixed oxide doped with cerium as catalyst,hydrogen peroxide as oxidant,to simulate oxidative removal of benzothiophene reaction oil as a probe.The effects of H_2O_2 amount,solvent amount,catalyst amount,reaction temperature and reaction time were investigated by single-factor method.The results show that the specific surface area of cerium-doped 0.02 CeO_2-0.1CuO-SiO_2 mixed oxide is slightly higher than CuO-SiO_2.Under the reaction conditons of model oil 10 m L,catalyst 0.10 g,solvent acetonitrile 2.0 m L,30% H_2O_20.2 m L,oxidation reaction temperature 65 ℃ and reaction time 60 min,the desulfurization rate reaches up to 88.23%.