载体炭对CuO/AC(F)催化-吸附剂干法催化氧化苯酚的影响  

Effect of carbon support on CuO/AC(F) catalyst-sorbents used for catalytic dry oxidation of phenol

作　　者：赵江红[1] 刘振宇[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《新型炭材料》2005年第2期115-121,共7页New Carbon Materials

基　　金：国家自然科学基金(20276078)~~

摘　　要：为了探讨载体炭对CuO/AC(F)催化-吸附剂干法催化氧化苯酚的影响,选择四种性质不同的活性炭(纤维)作载体,制得双功能材料CuO/AC(F)催化-吸附剂。通过TGMS联用系统研究了CuO/AC(F)催化-吸附剂的苯酚催化氧化活性及其自身的烧蚀活性,采用BET、XRD等手段表征了载体炭和CuO/AC(F)催化-吸附剂的物理化学特性。结果表明,载体炭中的灰分影响CuO/AC(F)催化-吸附剂的苯酚催化氧化活性,中孔促进苯酚的催化氧化,表面含氧官能团对苯酚催化氧化活性的影响不大,但表面含氧官能团和灰分均能促进催化-吸附剂的烧蚀。苯酚的催化氧化和炭的催化氧化可能遵循不同的反应历程。Four activated carbons (fibers) were chosen to prepare dual functional materials, CuO/AC(F) catalyst-sorbents. They were tested in order to investigate the effect of carbon supports on CuO/AC(F) catalyst-sorbents used for catalytic dry oxidation of phenol. A TG-MS instrument was used to study the phenol oxidation activity of CuO/AC(F) catalyst-sorbents and the ignition activities of the catalyst-sorbents themselves. The properties of the carbon supports and CuO/AC(F) catalyst-sorbents were characterized by BET and XRD. Results indicate that the ash from the carbon supports affects, and mesopores promote, the phenol oxidation activities of CuO/AC(F) catalyst-sorbents. Surface oxygen functional groups on carbon supports have no significant effect on the phenol oxidation activities of the-sorbents, but they and impurities from the carbon supports promote the ignition activities of CuO/AC(F) catalyst-sorbents themselves. Phenol oxidation and catalyst-sorbent ignition may proceed bt different reaction mechanisms.

关 键 词：CuO/AC(F)催化-吸附剂 载体炭 苯酚 干法催化氧化 

分 类 号：O621.251[理学—有机化学]