活性焦表面性质对CUO/AC脱硫性能的影响

分别以不同浓度的硝酸处理活性焦载体,采用硝酸铜溶液浸渍法制备CuO/AC催化剂,利用BET、FT-IR和XRD等方法对载体及催化剂进行表征.考察了不同浓度的硝酸处理对活性焦载体性质的影响,并对制得的催化剂的脱硫性能进行了比较.结果表明,活性焦经过硝酸处理后孔结构参数变化很小,而表面含氧酸性官能团的含量有了很大的提高,使...

Effect of nitric acid-treatment of activated coke on desulfurization with CuO/AC

Activated coke(AC) supports were treated by HNO₃ of different concentrations, then CuO/AC catalysts were prepared with activated coke by impregnation. The effect of desulfurization ability with CuO/AC catalysts was investigated. Activated coke supports and CuO/AC catalysts were characterized by BET, FT-IR and XRD. The results show that pore texture of activated coke supports change slightly after nitric acid-treatment, but acidic functional groups on the surface of activated coke increase. This leads to better dispersion of CuO, which increases desufurization ability of CuO/AC catalysts. After treatment with 20% HNO₃, the sulfur capacity of CuO/AC is 40.6 mg SO₂/g catalyst, which is 41.5% higher than untreated catalyst.