In order to develop a catalyst with high activity for catalytic wet oxidation （CWO） process at room temperature and atmospheric pressure, Fe2O3-CeO2-TiO2/γ-Al2O3 catalyst was prepared by consecutive impregnation me...In order to develop a catalyst with high activity for catalytic wet oxidation （CWO） process at room temperature and atmospheric pressure, Fe2O3-CeO2-TiO2/γ-Al2O3 catalyst was prepared by consecutive impregnation method and the prepared parameters were optimized. The structure of the catalyst was characterized by BET, XRF, SEM and XPS technologies, and the actual wastewater was used to investigate the catalytic activity of Fe2O3-CeO2-TiO2/γ-Al2O3 in CWO process. The experimental results showed that the prepared catalyst exhibited good catalytic activity when the doping amount of Ti was 1.0 wt% （the weight ratio of Ti to carriers）, and the middle product, Fe2O3-CeO2-TiO2/γ-Al2O3, was calcined in 450℃ for 2 h. The CWO experiment for treating actual dye wastewater indicated that the COD, color and TOC of actual wastewater were decreased by 62.23%, 50.12% and 41.26% in 3 h, respectively, and the ratio of BOD5/COD was increased from 0.19 to 0.30.展开更多
将微波与湿式催化氧化技术相结合,以硫酸改性纳米氧化铈为催化剂,H2O2为氧化剂,降解腈纶废水。研究了催化剂和氧化剂的用量、反应时间、反应温度等因素对有机物去除率的影响,确定了最佳反应条件为50 m L腈纶废水(COD 635 mg/L)投加0.25 ...将微波与湿式催化氧化技术相结合,以硫酸改性纳米氧化铈为催化剂,H2O2为氧化剂,降解腈纶废水。研究了催化剂和氧化剂的用量、反应时间、反应温度等因素对有机物去除率的影响,确定了最佳反应条件为50 m L腈纶废水(COD 635 mg/L)投加0.25 g酸化纳米Ce O2催化剂和0.3 m L 6%的H2O2,室温下搅拌3 h,微波辐射140℃下反应60 min,COD平均去除率达到89.7%。展开更多
微波条件下,采用软模板法制备了介孔催化剂CeO_2-SBA-16,用于处理丙烯腈废水,探讨了催化剂投加量、H_2O_2投加量、微波反应温度及微波反应时间对丙烯腈废水COD去除率的影响。结果表明,当CeO_2-SBA-16投加量1.0 g,H_2O_2投加量5 m L,反...微波条件下,采用软模板法制备了介孔催化剂CeO_2-SBA-16,用于处理丙烯腈废水,探讨了催化剂投加量、H_2O_2投加量、微波反应温度及微波反应时间对丙烯腈废水COD去除率的影响。结果表明,当CeO_2-SBA-16投加量1.0 g,H_2O_2投加量5 m L,反应时间40 min,微波反应温度100℃时,COD去除率达85%以上。展开更多
基金The National Basic Research Program (973) of China (No. 2004CB418505) the Foundation for Excellent Youth of HeilongjiangProvince
文摘In order to develop a catalyst with high activity for catalytic wet oxidation （CWO） process at room temperature and atmospheric pressure, Fe2O3-CeO2-TiO2/γ-Al2O3 catalyst was prepared by consecutive impregnation method and the prepared parameters were optimized. The structure of the catalyst was characterized by BET, XRF, SEM and XPS technologies, and the actual wastewater was used to investigate the catalytic activity of Fe2O3-CeO2-TiO2/γ-Al2O3 in CWO process. The experimental results showed that the prepared catalyst exhibited good catalytic activity when the doping amount of Ti was 1.0 wt% （the weight ratio of Ti to carriers）, and the middle product, Fe2O3-CeO2-TiO2/γ-Al2O3, was calcined in 450℃ for 2 h. The CWO experiment for treating actual dye wastewater indicated that the COD, color and TOC of actual wastewater were decreased by 62.23%, 50.12% and 41.26% in 3 h, respectively, and the ratio of BOD5/COD was increased from 0.19 to 0.30.
文摘将微波与湿式催化氧化技术相结合,以硫酸改性纳米氧化铈为催化剂,H2O2为氧化剂,降解腈纶废水。研究了催化剂和氧化剂的用量、反应时间、反应温度等因素对有机物去除率的影响,确定了最佳反应条件为50 m L腈纶废水(COD 635 mg/L)投加0.25 g酸化纳米Ce O2催化剂和0.3 m L 6%的H2O2,室温下搅拌3 h,微波辐射140℃下反应60 min,COD平均去除率达到89.7%。
文摘微波条件下,采用软模板法制备了介孔催化剂CeO_2-SBA-16,用于处理丙烯腈废水,探讨了催化剂投加量、H_2O_2投加量、微波反应温度及微波反应时间对丙烯腈废水COD去除率的影响。结果表明,当CeO_2-SBA-16投加量1.0 g,H_2O_2投加量5 m L,反应时间40 min,微波反应温度100℃时,COD去除率达85%以上。
