Issue 27, 2014

High-resolution adsorption analysis of pillared zeolites IPC-3PI and MCM-36

Abstract

The porous structure of pillared zeolites IPC-3PI and MCM-36 and their precursors IPC-3P and MCM-22P, respectively, has been investigated by means of a high-resolution adsorption analysis. The analysis was based on argon adsorption isotherms measured at 87 K from the relative pressure of 10−6. The isotherms were processed by means of the t-plot method, which made it possible to distinguish adsorption in micropores from adsorption in mesopores. The pore size distribution was evaluated from argon isotherms using Non-Local Density Functional Theory. The obtained results have shown that the microporous structure of the MWW layers is preserved in both pillared zeolites. In contrast to precursors IPC-3P and MCM-22P, pillared samples are characterized by the formation of a porous structure belonging to the lower mesopore region. The distribution of mesopores in the zeolite IPC-3PI is broader and is shifted to larger widths in comparison with the zeolite MCM-36.

Graphical abstract: High-resolution adsorption analysis of pillared zeolites IPC-3PI and MCM-36

Article information

Article type
Paper
Submitted
06 Feb 2014
Accepted
19 Mar 2014
First published
20 Mar 2014

Dalton Trans., 2014,43, 10558-10565

Author version available

High-resolution adsorption analysis of pillared zeolites IPC-3PI and MCM-36

A. Zukal and M. Kubů, Dalton Trans., 2014, 43, 10558 DOI: 10.1039/C4DT00389F

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