吸附有苯酚氧化残留物的Cu-Ce／AC吸附-催化剂的氢处理研究  

Hydrogen treatment of Cu-Ce/AC containing phenol oxidation residue

作　　者：雷智平[1] 刘振宇[1] 李秉正[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：《燃料化学学报》2008年第2期227-231,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(20276078);山西省基础研究项目(200603015)

摘　　要：对经苯酚吸附和干态催化氧化过程后吸附有苯酚残留物的活性炭载氧化铜和氧化铈(Cu-Ce/AC)进行了氢处理研究。结果表明,氢处理可明显促进残留物的分解,恢复Cu-Ce/AC对苯酚的吸附性能,减少在后续苯酚氧化过程中苯酚脱附量。氢处理温度越高,苯酚吸附容量恢复得越好。但氢处理不能恢复Cu-Ce/AC对苯酚的催化氧化活性,是由于活性组分晶粒长大所致。Formation of residues is a common issue in oxidation of phenol over activated carbon （AC） based materials, which results in the decrease of phenol adsorption capacity and phenol oxidation activity of these materials. Therefore, H2-treatment of Cu-Ce/AC （activated carbon supported copper and cerium） subjected to phenol adsorption and oxidation and containing phenol oxidation residues were investigated at elevated temperatures. The H2-treatment is found effective to promote decomposition of the residues, to recover phenol adsorption capacity of Cu-Ce/AC, and to reduce phenol desorption in the subsequent phenol oxidation process. In the range of 400 ℃ - 600 ℃, the effectiveness of H2-treatment increases with the treatment temperature. The H2-treatment, however, can not recover the phenol oxidation activity of Cu-Ce/AC due to agglomeration of the active phase.

关 键 词：干法催化氧化 炭基吸附剂 炭基催化剂 苯酚 残留物 氢处理 

分 类 号：TQ032[化学工程]