| Influence of Sulfation on the Catalytic Activity of Ni-ZrO2 for NO Reduction with Propane in Excess Oxygen |
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| 作者姓名： | 张淑绢 李兰冬 章福祥 关乃佳 |
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| 作者单位： | Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin 300071, China |
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| 基金项目： | 中国科学院资助项目，National Basic Research Program of China，教育部霍英东教育基金 |
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| 摘 要： | Selective catalytic reduction （SCR） of nitric oxide with propane in excess oxygen was investigated on Ni-ZrO2 （NZ） and sulfated Ni-ZrO2 （SNZ）, prepared by coprecipitation from a mixture of nickel nitrate-zirconium oxychloride followed by modifying with （NH4）2SO4. It was found that sulfated Ni-ZrO2 catalyst showed higher activity for the SCR of NO with propane than that of Ni-ZrO2. The structural and surface properties of catalysts were studied by XRD, BET, SEM and FT-IR of pyridine adsorption. The experimental results indicated that the modification of （NH4）2SO4 resulted in the generation of strong BrOnsted and Lewis acid sites and promoted the dispersion of the Ni species, which could lead to higher NO conversion and propane efficiency in NO reduction.
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| 关 键 词： | 废气处理 催化活性 Ni-ZrO2 硫酸盐化作用 共沉淀 丙烷 NO 催化还原 |
| 收稿时间： | 2005-09-20 |
| 修稿时间： | 2005-10-25 |
Influence of Sulfation on the Catalytic Activity of Ni-ZrO2 for NO Reduction with Propane in Excess Oxygen |
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| Shujuan Zhang,Landong Li,Fuxiang Zhang,Naijia Guan.Influence of Sulfation on the Catalytic Activity of Ni-ZrO2 for NO Reduction with Propane in Excess Oxygen[J].Journal of Natural Gas Chemistry,2005,14(4):221-225. |
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| Authors: | Shujuan Zhang Landong Li Fuxiang Zhang Naijia Guan |
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| Abstract: | Selective catalytic reduction (SCR) of nitric oxide with propane in excess oxygen was investigated on Ni-ZrO2 (NZ) and sulfated Ni-ZrO2 (SNZ), prepared by coprecipitation from a mixture of nickel nitrate-zirconium oxychloride followed by modifying with (NH4)2SO4. It was found that sulfated Ni-ZrO2catalyst showed higher activity for the SCR of NO with propane than that of Ni-ZrO2. The structural and surface properties of catalysts were studied by XRD, BET, SEM and FT-IR of pyridine adsorption. The experimental results indicated that the modification of (NH4)2SO4 resulted in the generation of strong Bronsted and Lewis acid sites and promoted the dispersion of the Ni species, which could lead to higher NO conversion and propane efficiency in NO reduction. |
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| Keywords: | sulfation Ni-ZrO2 coprecipitation SCR NO propane |
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