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Issue 30, 2016
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In situ monitoring of additives during CO2 gas hydrate formation

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Abstract

Research activities on the reduction of carbon dioxide emissions via effective carbon capture and storage (CCS) techniques are steadily increasing with the concept of storing CO2 as hydrates among the most prominently discussed strategies. The present study utilizes mid-infrared (MIR) fiber-optic evanescent field sensing techniques as a promising in situ monitoring tool for investigation of molecular changes occurring during CO2 hydrate formation. The identification and evaluation of characteristic IR absorption features associated with additive molecules (here, THF and SDS) and their changes during hydrate formation were pronounced via studies in D2O next to H2O as the hydrate-forming matrix. By correlating IR-spectroscopic data with continuously recorded pressure and temperature traces, hypotheses on the involvement and promoting effect of such additives during carbon dioxide gas hydrate formation were experimentally consolidated.

Graphical abstract: In situ monitoring of additives during CO2 gas hydrate formation

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Publication details

The article was received on 12 Mar 2016, accepted on 02 Jul 2016 and first published on 05 Jul 2016


Article type: Paper
DOI: 10.1039/C6AY00733C
Anal. Methods, 2016,8, 5897-5905
  • Open access: Creative Commons BY license
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    In situ monitoring of additives during CO2 gas hydrate formation

    M. Schwenk, A. Katzir and B. Mizaikoff, Anal. Methods, 2016, 8, 5897
    DOI: 10.1039/C6AY00733C

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