Department of Technological Synthetic Rubber of Kazan, National Research and Technology University, 420015, K. Marks St, Bldg 72. (Russian Federation).
Chemphyschem. 2013 Dec 16;14(18):4149-57. doi: 10.1002/cphc.201300733. Epub 2013 Nov 14.
We investigate the physicomechanical properties of polymeric heterogeneous catalysts of transition-metal oxides, specifically, the specific surface area, elongation at break, breaking strength, specific electrical resistance, and volume resistivity. Digital microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive analysis are used to study the surfaces of the catalysts. The experimental results show that polymeric heterogeneous catalysts of transition-metal oxides exhibit high stability and can maintain their catalytic activity under extreme reaction conditions for long-term use. The oxidation mechanism of sulfur-containing compounds in the presence of polymeric heterogeneous catalysts of transition-metal oxides is confirmed. Microstructural characterization of the catalysts is performed by using X-ray computed tomography. The activity of various catalysts in the oxidation of sulfur-containing compounds is determined. We demonstrate the potential application of polymeric heterogeneous catalysts of transition-metal oxides in industrial wastewater treatment.
我们研究了过渡金属氧化物聚合物多相催化剂的物理力学性能，特别是比表面积、断裂伸长率、断裂强度、比电阻和体积电阻率。采用数字显微镜、傅里叶变换红外光谱、X 射线衍射、扫描电子显微镜和能谱分析对催化剂表面进行了研究。实验结果表明，过渡金属氧化物聚合物多相催化剂具有高稳定性，在长期使用中能够在极端反应条件下保持其催化活性。证实了过渡金属氧化物聚合物多相催化剂存在时含硫化合物的氧化机理。采用 X 射线计算机断层扫描对催化剂的微观结构进行了表征。测定了各种催化剂在氧化含硫化合物中的活性。我们展示了过渡金属氧化物聚合物多相催化剂在工业废水处理中的潜在应用。
