Application of mass spectrometry for study of the adsorption of multicomponent surfactant mixtures at the solid/solution interface

Mária Benko, Sándor Puskás, Z. Király

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The selective adsorption of the components of a polydisperse gemini surfactant blend (alkylbenzenesulfonate-Jeffamine salt, ABSJ) in aqueous solution onto Berea sandstone, a reference material in enhanced oil recovery (EOR), was investigated. The individual adsorption isotherms of the four, benzene-ring containing ABSJ components with different alkyl chain lengths (ranging from decyl to tridecyl of the alkyl chain length) were simultaneously determined by using a four-channel electrospay ionization mass spectrometer (ESI-MS) for concentration analysis. This analytical device provided selective information (based on the differences in the mass to charge ratio) on the adsorption of each component in the mixed surfactant system. The overall isotherm obtained from the superposition of the individual isotherms determined by ESI-MS agreed well with the isotherm determined by UV spectrometry; the UV equipment is benzene-ring sensitive, irrespective of the alkyl chain length. The S-shaped isotherms reached a plateau at the critical micelle concentration. Longer-chain surfactants adsorbed preferentially over the short chain homologs, independently of solution concentration. This analytical device provided the net adsorption isotherm. Most analytical methods are not component selective, and thus they are not able to measure the individual isotherms in multicomponent solutions. Here, we report on a novel method which describes the selective determination of the individual adsorption isotherms of surfactants in a multicomponent mixture. The theoretical background of the method is described in detail.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalAdsorption
Volume19
Issue number1
DOIs
Publication statusPublished - Feb 2013

Fingerprint

Surface-Active Agents
Mass spectrometry
Isotherms
Solid solutions
isotherms
Surface active agents
solid solutions
mass spectroscopy
surfactants
Adsorption
adsorption
Chain length
Adsorption isotherms
Mass spectrometers
Benzene
Ionization
Salts
Critical micelle concentration
mass spectrometers
Sandstone

Keywords

  • Adsorption
  • Berea sandstone
  • Enhanced oil recovery
  • Gemini surfactants
  • Mass spectrometry
  • Multicomponent solutions

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Surfaces and Interfaces
  • Chemistry(all)

Cite this

Application of mass spectrometry for study of the adsorption of multicomponent surfactant mixtures at the solid/solution interface. / Benko, Mária; Puskás, Sándor; Király, Z.

In: Adsorption, Vol. 19, No. 1, 02.2013, p. 71-76.

Research output: Contribution to journalArticle

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