活性炭表面含氧基团的生成及对NO的还原作用

活性炭表面含氧基团的生成及对ＮＯ的还原作用＊高志明杨向光吴越＊＊（中国科学院长春应用化学研究所，长春１３００２２）关键词活性炭，一氧化氮，氧化铜，还原，氧化近几年，随着环保研究的开展，活性炭被用于同时脱硫脱硝反应［１］．活性炭的表面化学性质就成为需要...

FORMATION OF SURFACE OXIDES AND NITRIC OXIDE REDUCTION ON ACTIVE CARBON SUPPORTED CUPRIC OXIDE CATALYSTS

Molecular oxygen led to a sudden increase in the conversion of NO reduction over the four active carbons (AC) supported cupric oxide. The four active carbons were CSAC, HNAC, PNAC and CAC made from coconut shell, hawthorn nut, mountain peach nut and coal, respectively. The leap of NO conversion resulted from the fast and large formation of surface oxides, especially carboxyls and lactones, on the active carbons due to the partial oxidation by O 2 at a definite temperature. The formation temperature of the surface oxides was determined by the thermogravimetric experiment and it depended on the amount and distribution of the inherent oxygen containing groups on the active carbons. Nitric oxide can be completely reduced once the surface oxides are formed at the formation temperature.