Effects of doping y on crystal structure and catalytic activity of alpha-bi2mo3o12
文献类型：期刊论文
| 作者 | Cheng, Y. Z.1,2; Xue, L.2; Li, Z. X.1; Hu, Z. B.1 |
| 刊名 | Materials research innovations
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 14期号:2页码:122-126 |
| 关键词 | Bismuth molybdate Selective oxidation Yttrium X-ray diffraction |
| ISSN号 | 1432-8917 |
| DOI | 10.1179/143307510x12639910071395 |
| 通讯作者 | Hu, z. b.(huzq@gucas.ac.cn) |
| 英文摘要 | The single phase y0.2bi1.8mo3o12 and alpha-bi2mo3o12 catalysts have been synthesised by solid state reaction, and the y0.2bi1.8mo3o12 shows better catalytic performance than alpha-bi2mo3o12 in the selective oxidation of isobutene to methacrolein. x-ray powder diffraction structural analysis, x-ray photoelectron spectroscopy and o-2 temperature programmed desorption have been used to reveal the effects of doping y on the crystal structure and catalytic activity of alpha-bi2mo3o12 induced by y substitution for bi. it is found that when bi in alpha-bi2mo3o12 crystal structure is partially substituted by y with lower electronegativity, the electronic densities of oxygen will increase, which could improve the rate determining alpha-h abstraction at bi sites in the selective oxidation of isobutene to methacrolein. on the other hand, the partially regularised moo4 tetrahedra also promote the catalytic selectivity to methacrolein due to the decrease in oxidation ability. besides, the longer interatomic distances between mo-3 and bi in the principal cleavage plane (010) and (0 (1) over bar0) might result in the lesser catalytic activity of mo-3 sites. |
| WOS关键词 | SELECTIVE OXIDATION CATALYSTS ; BISMUTH MOLYBDATE CATALYSTS ; PROPYLENE ; MECHANISM ; AMMOXIDATION ; DIFFRACTION ; BI2(MOO4)3 ; 1-BUTENE ; PROPENE ; PHASE |
| WOS研究方向 | Materials Science |
| WOS类目 | Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000277446300004 |
| 出版者 | MANEY PUBLISHING |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2408258 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Hu, Z. B. |
| 作者单位 | 1.Chinese Acad Sci, Coll Chem & Chem Engn, Grad Univ, Beijing, Peoples R China 2.Shandong Univ Technol, Coll Chem Engn, Zibo, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Y. Z.,Xue, L.,Li, Z. X.,et al. Effects of doping y on crystal structure and catalytic activity of alpha-bi2mo3o12[J]. Materials research innovations,2010,14(2):122-126. |
| APA | Cheng, Y. Z.,Xue, L.,Li, Z. X.,&Hu, Z. B..(2010).Effects of doping y on crystal structure and catalytic activity of alpha-bi2mo3o12.Materials research innovations,14(2),122-126. |
| MLA | Cheng, Y. Z.,et al."Effects of doping y on crystal structure and catalytic activity of alpha-bi2mo3o12".Materials research innovations 14.2(2010):122-126. |
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来源：中国科学院大学
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