| Ti改性氢氧化铝干胶制备Pt/Al_2O_3-TiO_2催化剂的研究 |
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| 引用本文： | 郭振莲,张孔远,刘晨光.Ti改性氢氧化铝干胶制备Pt/Al_2O_3-TiO_2催化剂的研究[J].石油炼制与化工,2010,41(9):55-58. |
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| 作者姓名： | 郭振莲 张孔远 刘晨光 |
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| 作者单位： | 中国石油大学(华东)重质油国家重点实验室CNPC催化重点实验室,青岛,266555 |
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| 摘 要： | 以含钛氢氧化铝干胶和不含钛氢氧化铝干胶作为前驱物获得载体,采用浸渍法制备出Pt/Al_2O_3-TiO_2催化剂和Pt/Al_2O_3催化剂;采用BET、XRD、TPR、TEM、氢氧滴定等方法对所制备的催化剂进行表征,以重整抽余油为原料进行烯烃和芳烃的加氢活性评价。结果表明,TiO_2在载体中以锐钛矿形式存在,Pt/Al_2O_3-TiO_2催化剂的孔体积、比表面积和强度均略小于Pt/Al_2O_3催化剂,前者更易还原,Pt的分散度更大,而且有更高的烯烃和芳烃加氢活性。
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| 关 键 词： | TiO2 载体改性 还原性能 Pt分散度 加氢反应活性 |
| 收稿时间： | 2010-3-5 |
A STUDY OF Pt/Al2O3-TiO2 CATALYST PREPARED BY TiO2 MODIFIED ALUMINA |
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| Guo Zhenlian,Zhang Kongyuan,Liu Chenguang.A STUDY OF Pt/Al2O3-TiO2 CATALYST PREPARED BY TiO2 MODIFIED ALUMINA[J].Petroleum Processing and Petrochemicals,2010,41(9):55-58. |
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| Authors: | Guo Zhenlian Zhang Kongyuan Liu Chenguang |
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| Abstract: | Pt/Al2O3-TiO2 catalyst and Pt/Al2O3 catalyst were prepared by impregnation method, using TiO2 modified alumina and unmodified alumina as support respectively. These catalysts were characterized by BET, XRD, TPR, TEM and H2-O2 titration techniques. The hydrogenation activities for olefins and aromatic hydrocarbons saturation of these two catalysts were evaluated using reformate raffinate as feedstock. Results showed that TiO2 existed in the support in the form of anatase. The pore volume, specific surface area and strength of Pt/Al2O3-TiO2 catalyst were slightly less than those of Pt/Al2O3 catalyst. The reduction property and Pt dispersion of Pt/Al2O3-TiO2 catalyst was better, therefore, it exhibited improved hydrogenation performance. |
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| Keywords: | TiO2 support modification reduction property degree of Pt dispersion activity of hydrogenation |
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