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Mn/Fe-Mn改性HZSM-5在NH3-SCR中的催化性能
离子交换 HZSM-5 选择性催化还原 一氧化氮
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2012/3/16
采用离子交换法制备了不同Mn含量及不同Fe/Mn物质的量比的HZSM-5改性分子筛,并以NH3为还原剂,在体积空速为12000h-1条件下,考察了上述催化剂选择性催化还原NO性能.同时,运用环境扫描电镜(ESEM)、比表面积(BET)和X-射线衍射(XRD)等方法对催化剂进行了表征.结果表明,改性催化剂中活性组分在载体表面呈高度分散形式,催化活性较高,复合改性较单独改性性能更为优越,适量Fe的加入...
Adsorption of Cr(NH3)63+ and Cr(en)33+ on Clay Minerals and the Characterization of Chromium by X-Ray Photoelectron Spectroscopy
Adsorption Chlorite Chromium Complex ions Illite Kaolinite X-ray photoelectron spectroscopy
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2012/2/9
The nature of Cr(NH3)63+ and Cr(en)33+(en = ethylenediamine) adsorbed on chlorite, illite, and kaolinite has been studied by X-ray photoelectron spectroscopy (XPS). The interaction of the chromium com...
A Study on the Cation Exchange of [Co(NH3)6]3+ from H-Co (NH3)6-Vermiculite by Inorganic and Quaternary Ammonium Ions
[Co(NH3)6]3+ H-Co (NH3)6-Vermiculite Inorganic Quaternary Ammonium Ions
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2012/2/15
The exchange of [Co(NH3)6] 3+ from its vermiculite complex has been carried out with a number of inorganic and alkyl quaternary ammonium ions of varying ionic sizes. The distribution and selectivity c...