| 磷酸盐催化剂表面酸碱性的测定 |
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| 引用本文： | 刘红,严之光.磷酸盐催化剂表面酸碱性的测定[J].上海师范大学学报(自然科学版),1996(3). |
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| 作者姓名： | 刘红 严之光 |
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| 作者单位： | 上海师范大学化学系 |
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| 摘 要： | 应用ＮＨ３和ＣＯ２的程序升温脱附（ＴＰＤ）技术，测定了部分金属磷酸盐表面的酸碱性．结果表明：磷酸盐表面既存在着一定的酸中心，又存在着一定的碱中心，但它们的强度及量都不太大．所测定的磷酸盐中，Ｃａ３（ＰＯ４）２的酸碱强度和酸碱度均最大．
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| 关 键 词： | 磷酸盐 酸度 碱度 测定 程序升温脱附 催化剂 |
Measurement of the surface acidity-basicity of phosphates catalyst |
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| Liu Hong.Measurement of the surface acidity-basicity of phosphates catalyst[J].Journal of Shanghai Normal University(Natural Sciences),1996(3). |
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| Authors: | Liu Hong |
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| Institution: | Liu Hong(Shanghai Teachers' University)Yan Zhiguang(East China University of Science and Technology) |
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| Abstract: | The surface acidity-basicity of some metal phosphates was determined by temperatureprogrammed desorption (TPD) of NH3 and CO2. It was observed there were both acid sites and base sites on the surface of phosphates, but the strength and concentration of these sites were not too large. Among all of the determined phosphates in this paper,the strength and concentration of acid and base sites on Ca3 (PO4)2 were largest. |
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| Keywords: | phosphate acidity basicity determination temperature-programmed desorption catalyst |
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