| NiO或NiSO4改性的纳米HZSM-5催化剂的加氢脱硫活性 |
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| 引用本文： | 王文寿,郭洪臣,刘海鸥,王祥生.NiO或NiSO4改性的纳米HZSM-5催化剂的加氢脱硫活性[J].催化学报,2008,29(8). |
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| 作者姓名： | 王文寿 郭洪臣 刘海鸥 王祥生 |
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| 作者单位： | 大连理工大学化工学院催化化学与工程系,精细化工国家重点实验室,辽宁大连,116012 |
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| 摘 要： | 研究了纳米HZSM-5及其用不同镍化合物改性的催化剂的脱硫活性. 结果表明,对全馏分催化裂化汽油脱硫, NiSO4改性比NiO改性的催化剂有更好的脱硫活性稳定性. 通过催化剂吸附吡啶前后的傅里叶变换红外光谱、氨程序升温脱附和微分热重分析等表征结果发现, NiSO4中的SO2-4与催化剂中的Al2O3之间存在着较强的相互作用;这种相互作用可以产生类似于超强酸的酸性质,大大提高了催化剂路易斯酸中心的数量和强度,从而提高了催化剂催化脱硫活性的稳定性.
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| 关 键 词： | 全馏分催化裂化汽油 加氢脱硫 HZSM-5分子筛 硫酸镍 乙酸镍 硝酸镍 |
Hydrodesulfurization Activity of Nano-sized HZSM-5 Catalyst Modified by NiO or NiSO4 |
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| WANG Wenshou,GUO Hongchen,LIU Hai'ou,WANG Xiangsheng.Hydrodesulfurization Activity of Nano-sized HZSM-5 Catalyst Modified by NiO or NiSO4[J].Chinese Journal of Catalysis,2008,29(8). |
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| Authors: | WANG Wenshou GUO Hongchen LIU Hai'ou WANG Xiangsheng |
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| Abstract: | The hydrodesulfurization(HDS) activity of nano-sized HZSM-5 catalyst modified by different nickel species was measured with full-range FCC gasoline as feedstock.The results indicated that the nano-sized HZSM-5 catalyst modified by NiSO4 showed more stable HDS activity than the nano-sized HZSM-5 catalyst modified by NiO.The characterization of FT-IR spectra before and after pyridine adsorption,ammonium temperature-programmed desorption,and differential thermogravimetry showed that there was a strong interaction between SO24 and Al2O3 in the catalyst modified by NiSO4.The interaction increased both the amount and the strength of acid sites by creating a kind of acidity,being like super acid. |
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| Keywords: | full-range fluid catalytic cracking gasoline hydrodesulfurization HZSM-5 zeolite nickel sulfate nickel acetate nickel nitrate |
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