介孔CuO-CeO_2-MO_y(M:Zr,Al)催化剂的制备及其HCl催化氧化性能  

Synthesis of mesoporous CuO-CeO_2-MO_y(M:Zr,Al) catalyst and its catalytic performance for HCl oxidation

作　　者：邹冲[1,2] 费兆阳[1,2] 崔咪芬[1] 陈献[1] 汤吉海[1] 乔旭[1,2] 

机构地区：[1]南京工业大学化工学院,江苏南京210009 [2]南京工业大学材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2017年第1期7-12,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家科技支撑计划(2011BAE18B01);国家自然科学青年基金(21306089);江苏省高校自然科学基金面上项目(13KJB530006)

摘　　要：本文以EO20PO70EO20(P123)、正硅酸四乙酯、盐酸和水为原料,合成KIT-6,并以KIT-6作为硬模板制备介孔CuO-CeO_2-MOy(M:Zr,Al)催化剂。借助X线衍射(XRD)、N2吸附-脱附(BET)、拉曼光谱和H2程序升温还原(H2-TPR)等手段对催化剂进行表征,并考察催化剂在HCl氧化反应中的催化性能。结果表明:CuO-CeO_2-MOy获得了高比表面积(>140 m2/g)和较小的晶粒粒径,CuO物种高度分散在催化剂的表面或者进入CeO_2晶格中。CuOCeO_2-ZrO_2催化剂获得了最高的表面氧空位浓度和最佳的低温氧化-还原性能,在HCl氧化反应中表现出了最佳的催化活性和热稳定性。CuO-CeO2-MOr（M： Zr, Al） catalysts were prepared by hard template KIT-6 synthesized from EO20POy 0EO20（P123）,tetraethyl orthosilicate, hydrochloric acid and water. Relevant characterization was conducted by X-ray diffraction （ XRD）, N2 adsorption- desorption, Raman spectrum （ Raman） and H2 temperature programmed reduction （H2- TPR）.The activities of the catalysts for HCl oxidation were investigated. Results showed that CuO-CeO2-MOy（M： Zr, Al）catalysts had a high surface area （〉140 m2/g） and small grain sizes,and CuO species could highly disperse on the surface of the catalysts or dissolve into the catalysts. CuO-CeO2-ZrO2 had the most abundant surface oxygen vacancies and the best reducibility at low temperatures,and showed an excellent catalytic activity and good thermal stability in HCl oxidation.

关 键 词：CUO 硬模板 HCL CL2 氧空位 

分 类 号：O643[理学—物理化学]