新型碳质催化剂用于NH3选择性催化还原NOx的研究

以城市污水处理厂剩余污泥为原料制备了一种新型碳质催化剂。通过试验考察了催化剂在NH₃选择催化还原NO中的应用效果。结果表明,催化性能较好，最佳的制备和催化反应条件为：锌铁物质的量比1∶0.5，热解温度750 ℃，反应温度400 ℃，O₂浓度15%。在此条件下，NOx的最大转化率达98.3%。通过考察证明催化剂自身具有一定的还原性能。对催化剂进行了FTIR、TG、SEM和BET分析，结果表明，催化剂具有很丰富的孔结构、活性粒子和表面官能团，比表面积较大，最大可达307 m²·g^-1，分析结果显示具有良好的催化条件。

Application of a new carbonaceous catalyst in NH3 selective catalytic reduction(SCR) of NOx

A new carbonaceous catalyst was prepared from sludge of the municipal waste water treatment plant. The catalytic properties of the catalyst for NH₃ selective catalytic reduction (SCR) of NOx was investigated. The experimental results showed that NOx conversion of 98.3% was attained under the following condition:n(Zn)∶n(Fe)=1∶0.5, pyrolysis temperature 750 ℃, reaction temperature 400 ℃, oxygen concentration=15%. The catalyst samples were characterized by FTIR、TG、SEM and BET, which showed that the catalyst had abundant pore structures, active particles and surface functional groups, with surface area up to 307 m^₂·g－1.