Preparation of Mg-Al layered double hydroxides intercalated with alkyl sulfates and investigation of their capacity to take up N,N-dimethylaniline from aqueous solutions

Tomohito Kameda, Yuuichi Tsuchiya, Takashi Yamazaki, Toshiaki Yoshioka

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

This study examined the effect of the interlayer spacing of a Mg-Al layered double hydroxide (Mg-Al LDH) on the ability of the Mg-Al LDH to take up a nonionic organic material. Mg-Al LDHs, intercalated with 1-propanesulfonate (PS-), 1-hexanesulfonate (HS-), and 1-dodecanesulfonate (DS-), were prepared by coprecipitation, yielding PS·Mg-Al LDH, HS·Mg-Al LDH, and DS·Mg-Al LDH, respectively. The increase in the alkyl chain lengths of the Mg-Al LDHs (PS- < HS- < DS-) resulted in the perpendicular orientation of the organic acid anions in the interlayer of Mg-Al LDH, which in turn resulted in more organic acid anions being accommodated in the interlayer space. An organic acid anion with a large molecular length was more easily intercalated in the interlayer of Mg-Al LDH than one with a small molecular length. This was attributed to the hydrophobic interaction between the alkyl chains, affecting the intercalation of the organic acid anions. The uptake of N,N-dimethylaniline (DMA) by Mg-Al LDHs increased in the order PS·Mg-Al LDH < HS·Mg-Al LDH < DS·Mg-Al LDH. The uptake was attributed to the hydrophobic interactions between DMA and the intercalated PS-, HS-, and DS-. Thus, Mg-Al LDH, which has a lot of large interlayer spacings when intercalated with organic acid anions, can take up a large number of DMA molecules from an aqueous solution.

Original languageEnglish
Pages (from-to)2060-2064
Number of pages5
JournalSolid State Sciences
Volume11
Issue number12
DOIs
Publication statusPublished - 2009 Dec

Keywords

  • Alkyl sulfates
  • Magnesium-aluminum layered double hydroxide
  • N,N-dimethylaniline
  • Preparation
  • Uptake

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Preparation of Mg-Al layered double hydroxides intercalated with alkyl sulfates and investigation of their capacity to take up N,N-dimethylaniline from aqueous solutions'. Together they form a unique fingerprint.

Cite this