Water Mobility in Chalk: A Quasielastic Neutron Scattering Study

Marcella Cabrera Berg; Kim Nicole Dalby; Nikolaos Tsapatsaris; Denis Okhrimenko; Henning Osholm Sørensen; Diwaker Jha; J. P. Embs; Susan Louise Svane Stipp; Heloisa Nunes Bordallo

doi:10.1021/acs.jpcc.7b01998

Water Mobility in Chalk: A Quasielastic Neutron Scattering Study

Marcella Cabrera Berg, Kim Nicole Dalby, Nikolaos Tsapatsaris, Denis Okhrimenko, Henning Osholm Sørensen, Diwaker Jha, J. P. Embs, Susan Louise Svane Stipp, Heloisa Nunes Bordallo

3 Citations (Scopus)

Abstract

Water mobility through porous rock has a role to play in many systems, such as contaminant remediation, CO₂ storage, and oil recovery. We used inelastic and quasielastic neutron scattering to describe water dynamics in two different chalk samples that have similar pore volume (ranging from tens of micrometers to a few nanometers) but different water uptake properties. We observed distinct water populations, where the analysis of the quasielastic data shows that after the hydration process most of the water behaves as bulk water. However, the lack of quasielastic signal, together with the observation of a translational mode at 10 meV, imply that in chalk samples that take up less water confinement occurs mostly in the pore volume that is accessible with nitrogen adsorption measurements.

Original language	English
Journal	The Journal of Physical Chemistry Part C
Volume	121
Issue number	26
Pages (from-to)	14088-14095
Number of pages	8
ISSN	1932-7447
DOIs	https://doi.org/10.1021/acs.jpcc.7b01998
Publication status	Published - 6 Jul 2017

Access to Document

10.1021/acs.jpcc.7b01998

acs.jpcc.7b01998Final published version, 3.87 MB

Cite this

@article{978ace8c13544c9dae020b3ba9b1a97a,

title = "Water Mobility in Chalk: A Quasielastic Neutron Scattering Study",

abstract = "Water mobility through porous rock has a role to play in many systems, such as contaminant remediation, CO2 storage, and oil recovery. We used inelastic and quasielastic neutron scattering to describe water dynamics in two different chalk samples that have similar pore volume (ranging from tens of micrometers to a few nanometers) but different water uptake properties. We observed distinct water populations, where the analysis of the quasielastic data shows that after the hydration process most of the water behaves as bulk water. However, the lack of quasielastic signal, together with the observation of a translational mode at 10 meV, imply that in chalk samples that take up less water confinement occurs mostly in the pore volume that is accessible with nitrogen adsorption measurements.",

author = "Berg, {Marcella Cabrera} and Dalby, {Kim Nicole} and Nikolaos Tsapatsaris and Denis Okhrimenko and S{\o}rensen, {Henning Osholm} and Diwaker Jha and Embs, {J. P.} and Stipp, {Susan Louise Svane} and {Nunes Bordallo}, Heloisa",

year = "2017",

month = jul,

day = "6",

doi = "10.1021/acs.jpcc.7b01998",

language = "English",

volume = "121",

pages = "14088--14095",

journal = "The Journal of Physical Chemistry Part C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "26",

}

TY - JOUR

T1 - Water Mobility in Chalk

T2 - A Quasielastic Neutron Scattering Study

AU - Berg, Marcella Cabrera

AU - Dalby, Kim Nicole

AU - Tsapatsaris, Nikolaos

AU - Okhrimenko, Denis

AU - Sørensen, Henning Osholm

AU - Jha, Diwaker

AU - Embs, J. P.

AU - Stipp, Susan Louise Svane

AU - Nunes Bordallo, Heloisa

PY - 2017/7/6

Y1 - 2017/7/6

N2 - Water mobility through porous rock has a role to play in many systems, such as contaminant remediation, CO2 storage, and oil recovery. We used inelastic and quasielastic neutron scattering to describe water dynamics in two different chalk samples that have similar pore volume (ranging from tens of micrometers to a few nanometers) but different water uptake properties. We observed distinct water populations, where the analysis of the quasielastic data shows that after the hydration process most of the water behaves as bulk water. However, the lack of quasielastic signal, together with the observation of a translational mode at 10 meV, imply that in chalk samples that take up less water confinement occurs mostly in the pore volume that is accessible with nitrogen adsorption measurements.

AB - Water mobility through porous rock has a role to play in many systems, such as contaminant remediation, CO2 storage, and oil recovery. We used inelastic and quasielastic neutron scattering to describe water dynamics in two different chalk samples that have similar pore volume (ranging from tens of micrometers to a few nanometers) but different water uptake properties. We observed distinct water populations, where the analysis of the quasielastic data shows that after the hydration process most of the water behaves as bulk water. However, the lack of quasielastic signal, together with the observation of a translational mode at 10 meV, imply that in chalk samples that take up less water confinement occurs mostly in the pore volume that is accessible with nitrogen adsorption measurements.

U2 - 10.1021/acs.jpcc.7b01998

DO - 10.1021/acs.jpcc.7b01998

M3 - Journal article

SN - 1932-7447

VL - 121

SP - 14088

EP - 14095

JO - The Journal of Physical Chemistry Part C

JF - The Journal of Physical Chemistry Part C

IS - 26

ER -

Water Mobility in Chalk: A Quasielastic Neutron Scattering Study

Abstract

Access to Document

Fingerprint

Cite this