This article is from the ECONOS part of the joint special issue on the European Conference on Nonlinear Optical Spectroscopy (ECONOS 2012) with Guest Editors Johannes Kiefer and Peter Radi and the II Italian Conference of the National Group of Raman Spectroscopy and Non-Linear Effects (GISR 2012) with Guest Editor Maria Grazia Giorgini.
CARS diagnostics of fluid phase behavior in small mesopores at near-critical temperatures†
Version of Record online: 9 APR 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Special Issue: Joint special issue on the European Conference on Nonlinear Optical Spectroscopy (ECONOS 2012) and the II Italian Conference of the National Group of Raman Spectroscopy and Non-Linear Effects (GISR 2012)
Volume 44, Issue 10, pages 1363–1368, October 2013
How to Cite
Arakcheev, V. G. and Morozov, V. B. (2013), CARS diagnostics of fluid phase behavior in small mesopores at near-critical temperatures. J. Raman Spectrosc., 44: 1363–1368. doi: 10.1002/jrs.4289
- Issue online: 22 OCT 2013
- Version of Record online: 9 APR 2013
- Manuscript Accepted: 15 FEB 2013
- Manuscript Revised: 13 FEB 2013
- Manuscript Received: 22 OCT 2012
- Russian Foundation for Basic Research. Grant Numbers: 11-02-01309-a, 11-02-12112-ofi-m-2011, 12-02-01067-a
- CARS spectroscopy;
- phase behavior;
- critical point
Coherent anti-Stokes Raman scattering (CARS) spectroscopy is applied to investigate the fluid phase behavior in small mesopores at bulk sub- and supercritical temperatures. CARS spectra of the Q-branch (1388 cm−1) of carbon dioxide were measured at isothermal compression in pores of two nanoporous glass samples with pore radii of 2 and 3.5 nm. The spectral transformations with pressure of the fluid indicate the formation of a condensed phase in the volume of pores that clearly demonstrates the shift of the critical point. The spectrum of carbon dioxide condensed in the wider pores corresponds approximately to the critical density in bulk. In the narrower pores, the spectrum is noticeably shifted towards the lower wavenumbers that correspond to higher density of condensed fluid. Copyright © 2013 John Wiley & Sons, Ltd.