通过硝酸和高温2种不同方法处理活性炭与未处理的活性炭进行比较.以红外光谱,氮气吸附脱附测定活性炭表面基团、比表面、孔径孔容的变化.以XRD、TPR、SEM对3种不同催化剂进行表征,并通过对氯硝基苯加氢制对氯苯胺来检测催化剂的活性.结果表明,高温处理活性炭后其比表面和孔容略有升高,表面基团发生了改变,催化剂活性提高.%The untreated activated carbon was compared with the treated activated carbon by nitric acid and high temperature. The change of carbon surface groups, surface area, pore volume and pore size were measured by IR, adsorption and desorption of nitrogen. Three different catalysts were characterized by XRD, SEM and TPR. The catalytic activity was detected by the hydrogenation of p - chloronitrobenzene to prepare p - chloroaniline. The results show that after heat treatment the surface area and the pore volume of activated carbon increased, the surface groups were changed and the catalytic activity was improved.
展开▼
