| 碱性助剂改性载体对Pd/Al2O3-TiO2催化剂的影响 |
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| 引用本文： | 张孔远,孔涛,曾佑富,谭振明.碱性助剂改性载体对Pd/Al2O3-TiO2催化剂的影响[J].石油炼制与化工,2011,42(7):38-42. |
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| 作者姓名： | 张孔远 孔涛 曾佑富 谭振明 |
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| 作者单位： | 1. 中国石油大学(华东)化学化工学院;2. 中国石油大学（华东）化学化工学院;3. 中国石油独山子石化分公司; |
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| 摘 要： | 分别采用浸渍法和混捏法对载体进行碱性助剂改性，浸渍法制备出Pd/Al2O3-TiO2催化剂；采用BET、XRD、Py-IR、NH3-TPD等方法对载体和催化剂进行表征；以含炔碳四馏分为原料，考察碱性助剂改性对Pd/Al2O3-TiO2催化剂选择性加氢活性和选择性的影响。结果表明：改性方法对载体的晶相结构没有影响，载体的XRD谱图均存在明显的锐钛矿和氧化铝特征峰；两种改性方法相比，混捏法改性载体的孔容、平均孔径和最可几孔径较大，总酸量、中强酸量和强酸量较低，有助于提高加氢催化剂的选择性和稳定性。用混捏法改性载体制备催化剂的炔烃转化率为73%，丁二烯选择性为85%，丁二烯损失为2.5%，选择性高于未改性催化剂。
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| 关 键 词： | 碱性助剂 Pd催化剂 选择性加氢 氧化铝 氧化钛 丁二烯 炔烃 |
| 收稿时间： | 2011-01-06; |
EFFECT OF SUPPORT MODIFIED BY ALKALINE ADDITIVE ON THE PROPERTIES OF Pd/Al2O3-TiO2 CATALYST |
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| Zhang Kongyuan,Kong Tao,Zeng Youfu,Tan Zhenming.EFFECT OF SUPPORT MODIFIED BY ALKALINE ADDITIVE ON THE PROPERTIES OF Pd/Al2O3-TiO2 CATALYST[J].Petroleum Processing and Petrochemicals,2011,42(7):38-42. |
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| Authors: | Zhang Kongyuan Kong Tao Zeng Youfu Tan Zhenming |
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| Affiliation: | Zhang Kongyuan1,Kong Tao1,Zeng Youfu2,Tan Zhenming2(1.State Key Laboratory of Heavy Oil Processing,Key Laboratory of Catalysis,CNPC,China University of Petroleum(East China),Qingdao 266555,2.Dushanzi Petrochemical Company,PetroChina) |
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| Abstract: | Catalyst support was modified by alkaline additive using impregnation and wet-kneading methods respectively,and the relative Pd/Al2O3-TiO2catalysts were prepared by impregnation method.The samples of catalyst and support were characterized by BET,XRD,NH3-TPD and Py-IR techniques.The activities of the prepared catalysts for alkyne selective hydrogenation were evaluated using alkyne containing C4 fraction as feedstock.Results showed that the modification methods had little influence on the crystal phase struc... |
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| Keywords: | alkaline additive alumina titania Pd catalyst butadiene alkyne selective hydrogenation |
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