Design of efficient zeolite sensor materials for n-hexane
文献类型：期刊论文
| 作者 | Yang, Ping; Ye, Xingnan; Lau, Choiwan; Li, Zengxi; Liu, Xia; Lu, Jianzhong |
| 刊名 | Analytical chemistry
 |
| 出版日期 | 2007-02-15 |
| 卷号 | 79期号:4页码:1425-1432 |
| ISSN号 | 0003-2700 |
| DOI | 10.1021/ac061811+ |
| 通讯作者 | Lu, jianzhong(jzlu@shmu.edu.cn) |
| 英文摘要 | The effectiveness of several zeolite catalysts was investigated using the cataluminescence (ctl) gas sensor system. trace amounts of n-hexane in air samples were detected by this method. this research establishes that the specific pore size of the zeolite offers designable environment for selective ctl reaction, and "lewis-type" basic sites appear to contribute to the catalytic nature of the zeolite surface. by incorporating either cs+ or k+, the velocity and luminescence intensity of these catalytic reactions increase while going from na to cs, according to the basic nature of this group of cations in the following order: cs > k > na. the proposed sensor shows high sensitivity and selectivity to n-hexane at a mild reaction temperature of 225 degrees c. quantitative analysis was performed at a selected wavelength of 460 nm. the linear range of ctl intensity versus concentration of n-hexane was 0.776-23.28 mu g/ml (r = 0.997, n = 7) on csnay, and 0.776-23.28 mu g/ml (r = 0.998, n = 7) on csnax, with a detection limit of 0.155 mu g/ml (signal-to-noise ratio 3). interferences from foreign substances such as methanol, ethanol, 2-propanol, acetone, acetonitrile, chloroform, or dichlormethane and other alkanes, aromatics, and alkyl aromatics such as methane, n-pentane, 3-methylpentane, 3,3-dimethylpentane, methylbenzene, ethylbenzene, and sec-butylbenzene were very low or not detectable. results of a series of gc and gc/ms experiments suggest that the possible mechanism of the reaction is the formation of an unstable transition structure with a four-member ring, and this ring most probably consists of an oxygen atom and a carbonium ion localized on the zeolite suface. |
| WOS关键词 | UTILIZING CATALUMINESCENCE ; GAS SENSOR ; CHEMILUMINESCENCE ; CATALYSTS ; BASICITY ; CATIONS ; ENERGETICS ; OXIDATION ; ALKANES ; ALKALI |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Analytical |
| 语种 | 英语 |
| WOS记录号 | WOS:000244206300020 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380372 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Lu, Jianzhong |
| 作者单位 | 1.Fudan Univ, Sch Pharm, Shanghai 200032, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China 3.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ping,Ye, Xingnan,Lau, Choiwan,et al. Design of efficient zeolite sensor materials for n-hexane[J]. Analytical chemistry,2007,79(4):1425-1432. |
| APA | Yang, Ping,Ye, Xingnan,Lau, Choiwan,Li, Zengxi,Liu, Xia,&Lu, Jianzhong.(2007).Design of efficient zeolite sensor materials for n-hexane.Analytical chemistry,79(4),1425-1432. |
| MLA | Yang, Ping,et al."Design of efficient zeolite sensor materials for n-hexane".Analytical chemistry 79.4(2007):1425-1432. |
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来源：中国科学院大学
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