| Sm对MoO3-Bi2O3催化剂性能的影响 |
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| 引用本文： | 王洪义,李铭岫.Sm对MoO3-Bi2O3催化剂性能的影响[J].化学研究与应用,2006,18(2):152-155. |
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| 作者姓名： | 王洪义 李铭岫 |
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| 作者单位： | 河北师范大学化学学院,河北,石家庄,050016 |
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| 基金项目： | 河北省科技厅科研项目;河北省自然科学基金 |
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| 摘 要： | 在MoO3-B i2O3催化剂中加入稀土氧化物Sm2O3,在固定床反应器中考查了Sm2O3添加量、反应温度、异丁烯浓度、原料气流量等对异丁烯转化为甲基丙烯醛反应的影响。实验表明,添加Sm2O3可明显提高异丁烯的转化率和甲基丙烯醛的选择性。用XRD技术研究了催化剂的组成,Mo-B i-O催化剂的成分主要是B i2O3和MoO3的混合物,添加Sm后出现了Sm2Mo3O12的衍射峰,且衍射峰的强度随着Sm添加量的增加而增强。
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| 关 键 词： | 稀土氧化物 催化剂 异丁稀 甲基丙烯醛 |
| 文章编号： | 1005-1656（2006）02-0152-02 |
| 收稿时间： | 2005-03-02 |
| 修稿时间： | 2005-07-18 |
Effect of Sm on catalytic performance of MoO3 - Bi2O3 catalysts |
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| WANG Hong-yi,LI Ming-xiu.Effect of Sm on catalytic performance of MoO3 - Bi2O3 catalysts[J].Chemical Research and Application,2006,18(2):152-155. |
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| Authors: | WANG Hong-yi LI Ming-xiu |
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| Affiliation: | College of Chemistry, Hebei Normal University,Hebei Shijiazhuang 050091, China |
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| Abstract: | The samarium oxide was added to MoO_3-Bi_2O_3 catalyst.The reaction temperature,concentration of isobutene in the reactant gases and Sm_2O_3proportion in the MoO_3-Bi_2O_3 catalysts were studied in the fixed bed reactor.The results showed that the conversion of isobutene and selectivity for methacrolein were improved by adding samarium oxide.The maximum yield of methacrolein was obtained when the proportion of samarium reached 15%.XRD patterns of samples revealed the a-Bi_2Mo_3O_(12) was the major structure of the Mo-Bi-O catalyst.XRD patterns of Sm_2Mo_3O_(12) appeared in samarium doped catalyst and intensity of patterns were stronger with the increase of samarium content. |
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| Keywords: | rare earth oxide catalyst isobutene methacrolein |
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