4 years ago

Water Mobility in Chalk: A Quasielastic Neutron Scattering Study

Water Mobility in Chalk: A Quasielastic Neutron Scattering Study
M. C. Berg, H. O. Sørensen, N. Tsapatsaris, D. V. Okhrimenko, S. L. S. Stipp, D. Jha, H. N. Bordallo, K. N. Dalby, J. P. Embs
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.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b01998

DOI: 10.1021/acs.jpcc.7b01998

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.