| ZrO_2／SO_4~(2－)固体超强酸催化剂研究（Ⅱ）——表面化学和酸中心形成过程 |
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| 引用本文： | 任立国,孙桂大.ZrO_2／SO_4~(2－)固体超强酸催化剂研究（Ⅱ）——表面化学和酸中心形成过程[J].辽宁石油化工大学学报,1996(4). |
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| 作者姓名： | 任立国 孙桂大 |
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| 摘 要： | 用ＸＲＤ、ＬＲＳ研究了ＺｒＯ２／ＳＯ２－４和ＺｒＯ２晶相。用Ｎ２吸附法、化学分析法和滴定法测定了ＺｒＯ２／ＳＯ２－４的比表面、Ｓ含量和酸强度，ＸＰＳ测定ＺｒＯ２／ＳＯ２－４的能量。实验结果表明，ＳＯ２－４的存在延迟了ＺｒＯ２的晶变，提高了晶变温度，在ＺｒＯ２／ＳＯ２－４体系中不存在水和游离Ｈ２ＳＯ４，体系酸强度最高时ＺｒＯ２主要呈四方晶系。
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| 关 键 词： | 固体超强酸 比表面 X－射线衍射 二氧化锆的晶化 |
Studies on the ZrO 2/SO 2- 4 Solid Superacid Catalysts (Ⅱ)Surface Chemistry and Formation Process of the Acidic Sites |
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| Ren Liguo,Sun Guida.Studies on the ZrO 2/SO 2- 4 Solid Superacid Catalysts (Ⅱ)Surface Chemistry and Formation Process of the Acidic Sites[J].Journal of Liaoning University of Petroleum & Chemical Technology,1996(4). |
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| Authors: | Ren Liguo Sun Guida |
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| Affiliation: | Department of Petrochemical Engineering |
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| Abstract: | The crystallization and phase transition of the ZrO 2/SO 2- 4 and ZrO 2 were studied by XRD and LRS. Surface area. S% and acidic strength were measured by N 2 adsorption method, chemical analysis method and tritration method. It was shown that SO 2- 4 ion retards crystal phase change and enhances phase change temperature. There was no water and free H 2SO 4 present in the ZrO 2/SO 2- 4 superacid system, and acidic strength of the superacid system reached the maxinum as the ZrO 2 was of a tetragonal crystal phase. |
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| Keywords: | Solid superacid Surface area X-ray diffraction ZrO 2 crystallization |
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