On the inflection in the concentration dependence of the Maxwell-Stefan diffusivity of CF4 in MFI zeolite
Article Abstract:
The Maxwell-Stefan diffusivity of CF4 in MFI zeolite shows an inflection at a loading theta = 12 molecules per unit cell, corresponding to the inflection in the adsorption isotherm. The influence behavior of diffusivity is likely to be a generic characteristic of transport in nanoporous materials in which the adsorption of the diffusant occurs on multiple sites with widely different strengths.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Pure and multicomponent gas diffusion within zeolite adsorbents: Pulsed field gradient NMR analysis and model development
Article Abstract:
The self-diffusion of gases within 5A- and 13X-type zeolites was investigated using pulsed field gradient (PFG) NMR. It elucidates the effect of gas composition on transport rate by measuring diffusion of the corresponding binary and ternary gas mixtures within these zeolites.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
User Contributions:
Comment about this article or add new information about this topic:
Investigation of the negative thermal expansion mechanism of zeolite chabazite using the pair distribution function method
Article Abstract:
A pair of distribution function (PDF) method is used to gain insight into the mechanism of contraction of zeolite chabazite. The main results are obtained from analysis of the differences in the experimental PDFs with temperature and by comparison to optimized structures.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: An FT-Raman spectroscopic study of the conformational properties of chlorocyclohexane in zeolites. An FT-Raman spectroscopic study of the conformational behavior of trans-1,4-dichlorocyclohexane adsorbed in zeolites
- Abstracts: Homogeneous freezing of water starts in the subsurface. Enhanced concentration of polarizable anions at the liquid water surface: SHG spectroscopy and MD simulations of sodium thiocyanide
- Abstracts: Temperature and pressure dependence of the AMOEBA water model. Polarizable atomic multiple water model for molecular mechanics simulation
- Abstracts: Photoionization and photofragmentation of SF6 in Helium nanodroplets. The growth of HF polymer in helium nanodroplets: Probing the barriers to ring insertion
- Abstracts: Selective inhibition of paraffin deposition under high flow rate as a function of the crude oil paraffin type and content by fluorescence depolarization: Polypropylene and high-density polyethylene