| 丝光型Si-Fe沸石表面酸碱性的研究 |
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| 引用本文： | 余有禄,丁莹如.丝光型Si-Fe沸石表面酸碱性的研究[J].无机化学学报,1987,3(3):99-105. |
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| 作者姓名： | 余有禄 丁莹如 |
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| 作者单位： | 南京大学化学系
(余有禄)，南京大学化学系(丁莹如) |
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| 摘 要： | 本文藉助红外光谱(IR)、程序升温脱附—质谱(TPD—MS)等手段研究了丝光型Si—Fe沸石分子筛表面的酸碱性质。结果表明:丝光沸石骨架中的铝原子被铁原子取代以后,其表面酸性大为减弱,但其碱性相对增强,Si—Fe沸石分子筛大部分表面羟基的酸性很弱,仍有一定量的L酸中心存在于沸石的表面上。
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| 关 键 词： | 杂原子分子筛 酸碱性 红外光谱 程脱 |
| 收稿时间： | 1986/12/31 0:00:00 |
STUDY ON ACIDITY AND BASICITY OF Si-Fe MORDENITE ZEOLITE |
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| Yu Youlu and Ding Yingru.STUDY ON ACIDITY AND BASICITY OF Si-Fe MORDENITE ZEOLITE[J].Chinese Journal of Inorganic Chemistry,1987,3(3):99-105. |
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| Authors: | Yu Youlu and Ding Yingru |
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| Institution: | Department of Chemistry, N anjing University, Nanjing and Department of Chemistry, N anjing University, Nanjing |
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| Abstract: | By means of infrared(IR) and temperature-programmed desorption-mass spectroscopy(TPD-MS), the surface acidity and basicity of Si-Fe mordenite zeolite was studied. Results showed that the acidity of Si-Fe zeolite was decreased acidity of surface hydroxy(-OH) is very weak, whereas the basicity of the zeolite was relatively increased, after aluminium atoms were replaced by iron atoms. Also, it was found that there were a few Lewis acid centres on the zeolite surface. |
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| Keywords: | hetero-atom molecular sieve acidity and basicity IR TPD |
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