| 摘要: |
| 采用自制的Ni/Fe对含有对氯苯酚（p-CP）的废水进行脱氯处理，并研究了Ni/Fe配比、添加浓度、pH、反应温度及氯原子取代数目对Ni/Fe催化降解氯代苯酚的影响。结果表明，Ni/Fe对p-CP的脱氯效率在其配比为2.95％时达到最高，此时Ni/Fe催化剂的比表面积为11.671 m2/g，是酸洗过Fe0的4.33倍；Ni/Fe添加浓度为3～12.0 g/L，p-CP的脱氯效率随Ni/Fe添加浓度的增加而升高；Ni/Fe对p-CP的脱氯效率随pH值的升高而降低；在温度≤43 ℃时，Ni/Fe的脱氯效率随温度升高而升高，反应为吸热反应；Ni/Fe对氯代苯酚的催化特性随Cl原子取代数目的增加而增强。Ni/Fe对含氯代苯酚废水有非常有效的催化降解效果。 |
| 关键词: Ni/Fe二元金属 离子色谱 催化还原 最低分子空轨道能 |
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| 基金项目:陕西省自然科学基金项目（NO.2004B30）；陕西省教育厅基金项目（NO.04JK234） |
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| Catalytic degradation of p-chlorophenol-contaminated water by Ni/Fe bimetallic |
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| Abstract: |
| Ni/Fe bimetallic catalyst was used to catalytically dechlorinate p-CP in water，and the reaction parameters such as the proportion,adding concentration of Ni/Fe,pH value,temperature and chlorine ion number were discussed in details.The results indicated that Ni/Fe showed very catalytic effect on chloro phenol contaminated water;the catalytic activity achieved optimum at 2.95%,and the surface area of 2.95% Ni/Fe was 11.671 m2/g,4.33 times bigger than that of Fe0;p-CP's dechlorination efficiency increased with Ni/Fe's adding concentration between 3～12.0 g/L,but decreased with the increasing of pH value;and the reaction was proposed to be a endothermic reaction when temperature≤43 ℃;the catalytic property of Ni/Fe on chlorophenols increased with the increasing of chlorine atom number,which was probably attributed to ELUMO. |
| Key words: Ni/Fe bimetallics p-chlorophenol ion spectrum catalytic reduction ELUMO |
