| TPD法研究Ni－W／F－Al_2O_3－SiO_2催化剂的酸性 |
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| 引用本文： | 朱建军,林西平,谭其群,侯学洪.TPD法研究Ni－W／F－Al_2O_3－SiO_2催化剂的酸性[J].江苏石油化工学院学报,1996(2). |
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| 作者姓名： | 朱建军 林西平 谭其群 侯学洪 |
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| 作者单位： | 江苏石油化工学院化工系 |
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| 摘 要： | 采用ＴＰＤ法在排除了再吸附现象的条件下，研究了Ｆ含量对Ｎｉ－Ｗ／Ｆ－Ａｌ２Ｏ３—ＳｉＯ２催化剂酸性的影响，并将测定结果与Ｈａｍｍｅｔｔ指示剂法测定结果进行了关联，结果表明，Ｆ对该催化剂两种不同强度的酸性中心具有不同程度的影响，Ｆ含量的变化对催化剂弱酸中心的酸强度和酸浓度无显著的影响，而对催化剂强酸中心的影响较大，当Ｆ含量为１．５％左右时其酸度具有极大值，且随着Ｆ含量的增加，强酸中心的酸强度逐渐增强。
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| 关 键 词： | TPD 再吸附 Ni－W／F—Al2O3－SiO2催化剂 |
Studies on Acidity of Ni-W/F-Al 2O 3-SiO 2 Catalyst Using TPD |
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| Zhu Jianjun \ Lin Xiping \ Tang Qiqun \ Hou Xuehong.Studies on Acidity of Ni-W/F-Al 2O 3-SiO 2 Catalyst Using TPD[J].Journal of Jiangsu Institute of Petrochemical Technology,1996(2). |
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| Authors: | Zhu Jianjun \ Lin Xiping \ Tang Qiqun \ Hou Xuehong |
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| Abstract: | In this paper, the influence of concentration of F on acidity of Ni-W/F-Al 2O 3-SiO 2 catalyst was investigated using temperature-programmed desorption (TPD) when the readsorption was eliminated As a result, the influence of F on the surface of the catalyst was different The concentration of F had less influence on the acidity of weaker acid sites, but it influenced the acidity of stronger acid sites markedly And, when there was about 1 5 percent F in the catalyst, the concentration of stronger acid sites was maximum With increase the concentration of F, the strength of stronger acid sites was increased |
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| Keywords: | temperature-programmed desorption readsorption Ni-W/F-Al 2O 3-SiO 2 catalyst |
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