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1 INTRODUCTIONCatalytichydrodechlorinationisanelegantreactionfordisposalofenvironmentallyhazardouschlorocarbons,suchaschloro -benzene[1] .Developmentofanewcatalystwithexcellentstabilityisnecessaryduetothedeactivationofsupportednoblemetalcatalysts[1] .Howeve… 相似文献
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Fe3+对固定于聚氯乙烯(PVC)膜中四甲氧基硫杂杯[4]芳烃有荧光猝灭作用,研制成测定光化学传感器,传感器敏感膜的最佳化学组成为:50 mg PVC粉、100 mg DOS和2.5 mg杯芳烃.在最佳pH为7.0的溶液中测定其线性响应范围为5.32×10^-8-1.48×10^-3 mol/L,检出限为1.59×10^-8 mol/L,敏感膜具有较好的重现性、可逆性和选择性,实验发现大部分离子对其检测不产生干扰. 相似文献
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采用纳滤膜在室温条件下对含铬废水进行处理.探讨了铬的不同形态、进料溶液中铬离子浓度、膜两侧压力对除铬效果的影响.结果表明:在实验条件下纳滤膜对于Cr(Ⅵ)和Cr(Ⅲ)的去除率都很高,均大于90%,且Cr(Ⅵ)去除率稍微大于Cr(Ⅲ)的去除率.随着进料废水中铬离子浓度升高或膜两侧压力的增加,纳滤膜对其去除率均有一定程度的下降. 相似文献
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1 INTRODUCTION
Catalytic hydrodechlorination is an elegant reaction for disposal of environmentally hazardous chlorocarbons,such as chloro-benzene[1].Development of a new catalyst with excellent stability is necessary due to the deactivation of supported noble metal catalysts[1].However the modification of catalytic properties of catalysts in hydrodechlorination reaction by introducing stable ligands to noble metals has been the least studied.Here the synthesis of Pd(Ⅱ) 2,9,16,23-symetrically tetrasubstituted phthalocyanines PdPTX4 (where X=-H,-NO2,-NH2 respectively) from phthalimide derivatives is reported,and their application as catalysts in hydrodechlorination of chlorobenzene,which is a representative environmentally hazardous materials is discussed. 相似文献
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选用掺杂对甲基苯磺酸聚吡咯膜附载纳米铜制得了葡萄糖传感器。在硫酸铜-硫酸-十六烷基三甲基溴化铵(CTMAB)溶液中于-0.1 V,时间600 s,电沉积一层纳米铜于聚吡咯膜上。根据纳米铜对葡萄糖存在的电催化活性和聚吡咯传递电子作用,使电极产生电流响应。由电极的循环伏安图(CV)对比,说明纳米铜对葡萄糖的测定有很好的增敏效果。该传感器对葡萄糖的线性响应范围为5.0×10-5~4.0×10-3mol.L-1,校正曲线的斜率为0.9952,检出限为1.0×10-5mol.L-1。 相似文献