Catalytic Oxidation of Hydrogen Sulfide on Fe/WSAC Catalyst Surface Modification via NH3-NTP: Influence of Gas Gap and Dielectric Thickness,Industrial & Engineering Chemistry Research

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Catalytic Oxidation of Hydrogen Sulfide on Fe/WSAC Catalyst Surface Modification via NH3-NTP: Influence of Gas Gap and Dielectric Thickness
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-02-19 00:00:00 , DOI: 10.1021/acs.iecr.7b05079
Kai Li ₁ , Sijian Liu ₁ , Xin Song ₁ , Chi Wang , Ping Ning , Maohong Fan ₁ , Xin Sun

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Surface modification of the Fe/WSAC catalyst with NH₃-NTP could enhance its catalytic oxidation ability toward H₂S. Influences of discharge gaps and dielectric thicknesses were indicated. The H₂S catalytic oxidation performance of Fe/WSAC catalyst was increased first and then decreased with increasing of discharge gap or dielectric thickness. The SEM images showed significant changes in the surface topography after treatment at low discharge gaps or large dielectric thicknesses, after which the surface was clear and smooth. The BET results showed that the surface area increased after the plasma treatment at low discharge gas gaps or large dielectric thicknesses. From the XPS spectra, the nitrogen content increased after the plasma treatment, and the deconvolution of the O 1s lattice oxygen peak revealed the oxygen content to increase at short discharge gas gaps. NH₃-plasma treatment is an efficient modification method for the improvement of the catalytic oxidation performance of activated carbon catalysts.

中文翻译：

NH ₃ -NTP对Fe / WSAC催化剂表面改性上硫化氢的催化氧化：气隙和介电厚度的影响

Fe / WSAC催化剂用NH ₃ -NTP进行表面改性可以增强其对H ₂ S的催化氧化能力。H ₂随着放电间隙或介电层厚度的增加，Fe / WSAC催化剂的S催化氧化性能先升高后降低。SEM图像显示在低放电间隙或较大电介质厚度下进行处理后，表面形貌发生了显着变化，此后表面变得干净，光滑。BET结果表明，在低放电气隙或较大电介质厚度下进行等离子体处理后，表面积增加。从XPS光谱看，等离子处理后氮含量增加，O 1s晶格氧峰的解卷积表明在短的放电气隙处氧含量增加。NH ₃等离子体处理是用于提高活性炭催化剂的催化氧化性能的有效改性方法。

更新日期：2018-02-21

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