Trimethylphosphine （TMP） has been adsorbed in carbon nanotubes and oxidized to trimethylphosphine oxide （TMPO）. 31p spin-lattice relaxation T1 measurements at temperatures from 203 to 333 K have been employed to i...Trimethylphosphine （TMP） has been adsorbed in carbon nanotubes and oxidized to trimethylphosphine oxide （TMPO）. 31p spin-lattice relaxation T1 measurements at temperatures from 203 to 333 K have been employed to in- vestigate the motions of TMPO. The 31p T1 is found to be monoexponential and isotropic. The activation energy is measured as 4.4±0.3 kcal.mol-1, which is comparable to that of TMP adsorbed on Lewis acid sites in zeolites.展开更多
文摘Trimethylphosphine （TMP） has been adsorbed in carbon nanotubes and oxidized to trimethylphosphine oxide （TMPO）. 31p spin-lattice relaxation T1 measurements at temperatures from 203 to 333 K have been employed to in- vestigate the motions of TMPO. The 31p T1 is found to be monoexponential and isotropic. The activation energy is measured as 4.4±0.3 kcal.mol-1, which is comparable to that of TMP adsorbed on Lewis acid sites in zeolites.
