MIL-101(Cr)在H_2O_2氧化环己烷反应中的催化性能  

Catalytic Performance of MIL-101(Cr) in Oxidation of Cyclohexane With H_2O_2

作　　者：张建功[1] 贺敏[1] 范彬彬[1] 李瑞丰[1] 

机构地区：[1]太原理工大学精细化工研究所,山西太原030024

出　　处：《石油学报（石油加工）》2013年第2期238-242,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(20971095);山西省自然科学基金项目(2010011014-4)资助

摘　　要：采用水热合成法制备了MIL-101(Cr)催化剂,考察了反应条件对其在H2O2氧化环己烷反应中催化性能的影响。利用XRD、FT-IR和UV-Vis等手段对MIL-101(Cr)反应前后结构的变化进行了表征。结果表明,MIL-101(Cr)在所选择的反应体系中存在Cr析出现象,其结构在以H2O2为氧化剂的反应体系中不稳定,经反应后形成了无定型物质,但催化活性不仅远高于新鲜MIL-101(Cr),而且还在重复利用中表现出良好的稳定性。MIL-101（Cr）was synthesized via hydrothermal synthesis, and the effects of reaction conditions on its catalytic performance in oxidation of cyclohexane with H2O2 were investigated. The structural changes of MIL-101（Cr） after reaction were characterized by XRD, FT-IR and UV-Vis techniques in detail. The results showed that MIL-101（Cr） was not stable in cyclohexane oxidation with H2O2 and Cr leaching being observed. The crystalline structure of MIL-101（Cr） was completely destroyed and the amorphous after reaction was formed. The formed amorphous material exhibited much higher catalytic activity than the fresh MIL-101（Cr） in cyclohexane oxidation, and could be reused several times without significant change in its catalytic efficiency. MIL-101（Cr） was synthesized via hydrothermal synthesis, and the effects of reaction conditions on its catalytic performance in oxidation of cyclohexane with H2O2 were investigated. The structural changes of MIL-101（Cr） after reaction were characterized by XRD, FT-IR and UV-Vis techniques in detail. The results showed that MIL-101（Cr） was not stable in cyclohexane oxidation with H2O2 and Cr leaching was observed. The crystalline structure of MIL-101（Cr） was completely destroyed and the amorphous after reaction was formed. The formed amorphous material exhibited much higher catalytic activity than the fresh MIL-101（Cr） in cyclohexane oxidation, and could be reused several times without significant change in its catalytic efficiency.

关 键 词：金属有机多孔骨架材料 MIL-101(Cr) 环己烷氧化 H2O2 

分 类 号：TQ032[化学工程]