2000年
Dynamic behaviour of triethylamine molecules adsorbed in aluminophosphate (AlPO4-5) and silicoaluminophosphate (SAPO-5) molecular sieves
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
- ,
- ,
- 巻
- 2
- 号
- 8
- 開始ページ
- 1865
- 終了ページ
- 1869
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/a908962d
- 出版者・発行元
- ROYAL SOC CHEMISTRY
H-1 NMR spectra, second moments of line and spin-lattice relaxation times were measured for triethylamine (TEA) adsorbed in aluminophosphate (AlPO4-5) and silicoaluminophosphate (SAPO-5) molecular sieves in the temperature range 90 K to room temperature. Two modes of motions, molecular reorientations about the pseudo-C-3 axis and the isotropic rotation were observed in both systems. The fact that the former motion in SAPO-5 is hindered more than in AlPO4-5 was attributed to the hydrogen-bond formation between Bronsted acid sites and lone-pair electrons in TEA. This difference in interaction was shown to be the origin of the distribution of the motional correlation time (tau) in SAPO-5 less than in AlPO4-5 in which the presence of molecular C-3 axes in micropores oriented more randomly than in SAPO-5 result in a marked tau distribution.
- リンク情報
-
- DOI
- https://doi.org/10.1039/a908962d
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000086376300042&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0034656203&origin=inward
- ID情報
-
- DOI : 10.1039/a908962d
- ISSN : 1463-9076
- SCOPUS ID : 0034656203
- Web of Science ID : WOS:000086376300042