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首页> 外文期刊>Journal of industrial and engineering chemistry >A study on utilization of stainless steel wire cloth as a catalyst support
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A study on utilization of stainless steel wire cloth as a catalyst support

机译：不锈钢丝布作为催化剂载体的研究

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In this work, stainless steel wire cloth (SSWC) for metallic support was thermally treated to increase the adhesive strength of Al2O3 by improving superficial roughness. After coating Al2O3 on SSWC, Pt particles as a catalytic component were deposited on the Al2O3/SSWC. These supports and catalysts were characterized by N2 gas adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM) in conjunction with energy dispersive spectroscopy (EDS), and scanning transmission electron microscopy (STEM). The catalytic performance was tested in the ethylene oxidation. The effect of space velocity (GHSV = 2000-8000 h~(-1)) at different temperatures (190 °C and 210 °C) and reproducibility were investigated. The superficial roughness of SSWC was markedly increased by thermal oxidation at 800 "C for 12 h, and good adherence of Al2O3 to the SSWC was observed. The obtained Pt/Al2O3/SSWC800 catalyst showed excellent catalytic activity in the ethylene oxidation and showed a good reproducibility and stability even after repeated use.
机译：在这项工作中，对用于金属支撑的不锈钢丝布（SSWC）进行了热处理，以通过改善表面粗糙度来提高Al2O3的粘合强度。在SSWC上涂覆Al2O3之后，Pt颗粒作为催化成分沉积在Al2O3 / SSWC上。这些载体和催化剂的特征在于氮气吸附，X射线衍射（XRD），扫描电子显微镜（SEM）结合能量色散光谱（EDS）和扫描透射电子显微镜（STEM）。在乙烯氧化中测试了催化性能。研究了不同温度（190°C和210°C）下空速（GHSV = 2000-8000 h〜（-1））和重现性的影响。通过在800℃下热氧化12 h，SSWC的表面粗糙度显着增加，并且观察到Al2O3对SSWC的良好附着。制得的Pt / Al2O3 / SSWC800催化剂在乙烯氧化中显示出优异的催化活性，并显示出良好的重复使用后的重现性和稳定性。

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