Cu-Ce/AC吸附-催化剂对所吸附苯酚的催化氧化行为的研究

对活性炭载氧化铜和氧化铈（Cu-Ce/AC）吸附 催化剂在连续吸附-催化氧化苯酚循环过程中的催化氧化活性和失活原因进行了研究。结果表明，Cu-Ce/AC的苯酚吸附性能和催化氧化活性随着吸附 催化氧化循环次数的增加而逐渐降低，经5次循环后，苯酚的初始氧化温度提高约25℃。通过对使用过的Cu Ce/ACs进行XPS、ICP分析, 发现Ce和Cu的流失较小，苯酚残留物覆盖表面Ce和Cu是苯酚催化氧化活性降低的主要原因，残留物主要含有C-O-C和C-OH等官能团。

Catalytic oxidation behavior of phenol adsorbed on Cu-Ce/AC catalyst-sorbent

Catalytic activity and deactivation of a Cu-Ce/AC (activated carbon supported copper and cerium) catalyst-sorbent for oxidation of adsorbed phenol was investigated. Results show that phenol adsorption capacity and oxidation activity of Cu-Ce/AC decrease with an increase in adsorption-oxidation cycles. Initial phenol oxidation temperature of Cu-Ce/AC increases by 25℃ in 5 cycles. The deactivation of the catalyst is attributed to the formation of organic residues from oxidative coupling of phenol, which covers the Ce and Cu sites on the surface. C-O-C and C-OH groups were observed in the residues.