Acetylene diffusion in Na-Y zeolite

Pramana

R Mukhopadhyay¹  S L Chaplot¹  A M Umarji²  S Yashonath³  S Mitra1¹  S Sumitra² 

[1] Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India$$;Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$;Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Porous materials;    diffusion;    neutron scattering.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Study of diffusivity of acetylene adsorbed in Na-Y zeolite by quasi-elastic neutron scattering (QENS) measurements at temperatures of 300, 325 and 350 K is reported. A model in which the acetylene molecules undergo random-walk diffusion characterized by a Gaussian distribution of jump lengths inside zeolite cages describes the data consistently. The diffusion constant, residence time between jumps and root mean square jump length are determined.

【 授权许可】

Unknown