Investigation of "rearrangement step" in classical beckmann rearrangement mechanism over solid acid by means of o-18 isotopic
文献类型：期刊论文
| 作者 | Zhang, Zhen; Xing, Junpeng; Li, Jing; Yang, Xiangguang |
| 刊名 | Journal of molecular catalysis a-chemical
 |
| 出版日期 | 2007-09-17 |
| 卷号 | 275期号:1-2页码:36-46 |
| 关键词 | Rearrangement Reaction mechanisms Isotopic labeling Mass spectrometry |
| ISSN号 | 1381-1169 |
| DOI | 10.1016/j.molcata.2007.05.015 |
| 通讯作者 | Yang, xiangguang(xgyang@ciac.jl.cn) |
| 英文摘要 | The reaction mechanism of the beckmann rearrangement over b2o3/gamma-al2o3 and ts-1 in the gas phase has been investigated by isotope labeling approach. the isotopic labeled products were measured by mass spectrometry method. by exchanging oxygen with h, 180 in the rearrangement step, it was found that the exchange reaction between cyclohexanone oxime and (h2o)-o-18 over b2o3/-gamma-al2o3 and ts-1 could only be carried out in some extent. it suggested that the dissociation of nitrilium, over solid acids be not completely free as the classical mechanism. a concept of the dissociation degree (alpha) that is defined as the ratio of the dissociated intermediate nitrilium to the total intermediate nitrilium has been proposed. by fitting the experimental values with the calculation equation of isotopic labeled products, it is obtained that a values for b2o3/-gamma-al2o3 and ts-1 are 0.199 and 0.806 at the reaction conditions, respectively. (c) 2007 elsevier b.v. all rights reserved. |
| WOS关键词 | CYCLOHEXANONE OXIME ; CATALYTIC-PROPERTIES ; ACTIVE-SITES ; ZEOLITES |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000249607400006 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2381938 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yang, Xiangguang |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, Lab Green Chem & Proc, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhen,Xing, Junpeng,Li, Jing,et al. Investigation of "rearrangement step" in classical beckmann rearrangement mechanism over solid acid by means of o-18 isotopic[J]. Journal of molecular catalysis a-chemical,2007,275(1-2):36-46. |
| APA | Zhang, Zhen,Xing, Junpeng,Li, Jing,&Yang, Xiangguang.(2007).Investigation of "rearrangement step" in classical beckmann rearrangement mechanism over solid acid by means of o-18 isotopic.Journal of molecular catalysis a-chemical,275(1-2),36-46. |
| MLA | Zhang, Zhen,et al."Investigation of "rearrangement step" in classical beckmann rearrangement mechanism over solid acid by means of o-18 isotopic".Journal of molecular catalysis a-chemical 275.1-2(2007):36-46. |
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来源：中国科学院大学
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