| 孔形羟基磷灰石负载锶化合物催化剂的制备与表征 |
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| 引用本文： | 陈伟,黄志良,刘羽,何前军,许涛.孔形羟基磷灰石负载锶化合物催化剂的制备与表征[J].工业催化,2007,15(5):64-69. |
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| 作者姓名： | 陈伟 黄志良 刘羽 何前军 许涛 |
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| 作者单位： | 武汉工程大学材料科学与工程学院，湖北 武汉 430073 |
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| 基金项目： | 湖北省科技厅科技攻关项目
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湖北省自然科学基金 |
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| 摘 要： | 通过在873 K焙烧Sr(NO3)2/孔形羟基磷灰石，成功地制备了一种新型的固体碱催化剂，并对其进行TG-DTA、XRD、IR、SEM、BET和碱强度表征。结果表明，在873 K，发生固相离子交换反应——Ca5［PO4］3-y(CO3·OH)y］(OH)+SrOCa5-xSrx［PO4］3-y(CO3·OH)y］(OH)+ CaxSr1-xO，孔形羟基磷灰石表面上的新相CaxSr1-xO能抑制羟基磷灰石的分解，并能阻止羟基磷灰石的重结晶，使羟基磷灰石在高温下保持孔形结构。用此固体碱催化剂催化大豆油与甲醇的酯交换反应，可使豆油的转化率达到85%。
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| 关 键 词： | 孔形羟基磷灰石 固体碱 非均相催化剂 酯交换 |
| 文章编号： | 1008-1143（2007）05-0064-06 |
| 收稿时间： | 2006-11-04 |
| 修稿时间： | 2006年11月4日 |
Preparation and characterization of a strontium-based solid base catalyst supported on porous hydroxyapatite |
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| CHEN Wei,HUANG Zhiliang,LIU Yu,HE Qianjun,XU Tao.Preparation and characterization of a strontium-based solid base catalyst supported on porous hydroxyapatite[J].Industrial Catalysis,2007,15(5):64-69. |
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| Authors: | CHEN Wei HUANG Zhiliang LIU Yu HE Qianjun XU Tao |
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| Affiliation: | School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, Hubei，China |
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| Abstract: | A novel solid base catalyst was prepared by calcining Sr(NO3)2/porous hydroxyapatite at 873 K and characterized by TG, DTA, XRD, IR, SEM, BET and Hammett indicators. The results showed that solid phase ion exchange reaction, Ca5［(PO4)3-y(CO3·OH)y］(OH)+SrOCa5-xSrx［(PO4)3-y(CO3·OH)y］(OH)+ CaxSr1-xO, occurred at 873 K, and resulted in formation of CaxSr1-xO phase on the surface of porous hydroxyapatite, which inhibited decomposition and recrystallization of porous hydroxyapatite and helped to maintain its porous framework at higher temperature. Soybean oil conversion of 85% was obtained for transesterification of soybean oil with methanol catalyzed by the solid base catalyst. |
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| Keywords: | porous hydroxyapatite solid base heterogeneous catalyst transesterification |
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