Probe molecule kinetic studies of adsorption on MCM-41

A. Berenguer-Murcia; A.J. Fletcher; J. Garcia-Martinez; D. Cazorla-Amoros; A. Linares-Solano; K.M. Thomas

doi:10.1021/jp026764d

Probe molecule kinetic studies of adsorption on MCM-41

A. Berenguer-Murcia, A.J. Fletcher, J. Garcia-Martinez, D. Cazorla-Amoros, A. Linares-Solano, K.M. Thomas

Chemical And Process Engineering

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

Gases and vapors of varying dimensions were used as probes to investigate the adsorption processes on MCM-41 and precipitated silica, prepared by the same method as for MCM-41, but without the template. The adsorption kinetics of nitrogen, carbon dioxide, n-nonane, and α-pinene were studied for different amounts of preadsorbed gas/vapor as a function of relative pressure. The adsorption kinetics follow a linear driving force model for changes in surface coverage up to the adsorption isotherm plateaus. The variation of rate constant with relative pressure for MCM-41 and precipitated silica showed marked differences associated with adsorption in mesoporous structure, which are attributed to alignment of molecules in the mesopores leading to a pore blocking effect. The results are discussed in terms of differences in the adsorption mechanisms of gas/vapor diffusion in porous materials.

Original language	English
Pages (from-to)	1012-1020
Number of pages	8
Journal	Journal of Physical Chemistry B
Volume	107
Issue number	4
DOIs	https://doi.org/10.1021/jp026764d
Publication status	Published - Jan 2003

Keywords

molecule kinetic studies
probe molecules
adsorption
chemical engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/jp026764d

Cite this

@article{9826677c24f646f28431bfd63edf6b0e,

title = "Probe molecule kinetic studies of adsorption on MCM-41",

abstract = "Gases and vapors of varying dimensions were used as probes to investigate the adsorption processes on MCM-41 and precipitated silica, prepared by the same method as for MCM-41, but without the template. The adsorption kinetics of nitrogen, carbon dioxide, n-nonane, and α-pinene were studied for different amounts of preadsorbed gas/vapor as a function of relative pressure. The adsorption kinetics follow a linear driving force model for changes in surface coverage up to the adsorption isotherm plateaus. The variation of rate constant with relative pressure for MCM-41 and precipitated silica showed marked differences associated with adsorption in mesoporous structure, which are attributed to alignment of molecules in the mesopores leading to a pore blocking effect. The results are discussed in terms of differences in the adsorption mechanisms of gas/vapor diffusion in porous materials.",

keywords = "molecule kinetic studies, probe molecules, adsorption, chemical engineering",

author = "A. Berenguer-Murcia and A.J. Fletcher and J. Garcia-Martinez and D. Cazorla-Amoros and A. Linares-Solano and K.M. Thomas",

year = "2003",

month = jan,

doi = "10.1021/jp026764d",

language = "English",

volume = "107",

pages = "1012--1020",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

publisher = "American Chemical Society",

number = "4",

}

TY - JOUR

T1 - Probe molecule kinetic studies of adsorption on MCM-41

AU - Berenguer-Murcia, A.

AU - Fletcher, A.J.

AU - Garcia-Martinez, J.

AU - Cazorla-Amoros, D.

AU - Linares-Solano, A.

AU - Thomas, K.M.

PY - 2003/1

Y1 - 2003/1

N2 - Gases and vapors of varying dimensions were used as probes to investigate the adsorption processes on MCM-41 and precipitated silica, prepared by the same method as for MCM-41, but without the template. The adsorption kinetics of nitrogen, carbon dioxide, n-nonane, and α-pinene were studied for different amounts of preadsorbed gas/vapor as a function of relative pressure. The adsorption kinetics follow a linear driving force model for changes in surface coverage up to the adsorption isotherm plateaus. The variation of rate constant with relative pressure for MCM-41 and precipitated silica showed marked differences associated with adsorption in mesoporous structure, which are attributed to alignment of molecules in the mesopores leading to a pore blocking effect. The results are discussed in terms of differences in the adsorption mechanisms of gas/vapor diffusion in porous materials.

AB - Gases and vapors of varying dimensions were used as probes to investigate the adsorption processes on MCM-41 and precipitated silica, prepared by the same method as for MCM-41, but without the template. The adsorption kinetics of nitrogen, carbon dioxide, n-nonane, and α-pinene were studied for different amounts of preadsorbed gas/vapor as a function of relative pressure. The adsorption kinetics follow a linear driving force model for changes in surface coverage up to the adsorption isotherm plateaus. The variation of rate constant with relative pressure for MCM-41 and precipitated silica showed marked differences associated with adsorption in mesoporous structure, which are attributed to alignment of molecules in the mesopores leading to a pore blocking effect. The results are discussed in terms of differences in the adsorption mechanisms of gas/vapor diffusion in porous materials.

KW - molecule kinetic studies

KW - probe molecules

KW - adsorption

KW - chemical engineering

UR - http://dx.doi.org/10.1021/jp026764d

U2 - 10.1021/jp026764d

DO - 10.1021/jp026764d

M3 - Article

SN - 1520-6106

VL - 107

SP - 1012

EP - 1020

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 4

ER -

Probe molecule kinetic studies of adsorption on MCM-41

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this