The effect of adsorbed noble gas atoms on vibrational relaxation of hydroxyl group in zeolite
The effect of adsorbed noble gas atoms on vibrational relaxation of hydroxyl group in zeolite
复制标题
吸附惰性气体原子对沸石中羟基振动弛豫的影响
DOI：
10.1063/1.471873
复制
发表时间：
1996
影响因子：
4.4
通讯作者：
S. Kano
中科院分区：
文献类型：
--
作者：
T. Fujino;M. Furuki;M. Kashitani;K. Onda;J. Kubota;J. Kondo;A. Wada;K. Domen;C. Hirose;Fumitaka Wakabayashi;M. Ishida;F. Goto;S. Kano
通过可调谐红外泵浦-探针实验，测量了丝光沸石中Bro/nsted酸性羟基与稀有气体（He、Ar、Kr或Xe）相互作用时的OH伸缩模式的振动弛豫速率（v=1→0）。群体寿命 T1 随着与稀有气体相互作用的增加而降低，例如，孤立的羟基和与 Xe 相互作用的羟基分别为 170 ps 和 58 ps。使用简单的线性链模型，研究了弛豫率增强的机制。
By means of tunable infrared pump–probe experiment, vibrational relaxation rates (v=1→0) of OH stretching mode of Bro/nsted acidic hydroxyl groups in a mordenite zeolite, which were interacting with noble gases (He, Ar, Kr, or Xe), were measured. The population lifetime, T1, decreased with the increase of the interaction with noble gases, e.g., 170 ps and 58 ps for isolated hydroxyl groups and ones interacting with Xe, respectively. Using a simple linear chain model, the mechanism for the enhancement of the relaxation rate was studied.