Intercalation of aromatic sulfonates in ‘green rust’ via ion exchange

TY - GEN

T1 - Intercalation of aromatic sulfonates in ‘green rust’ via ion exchange

AU - Perez, Jeffrey Paulo H.

AU - Mangayayam, Marco C.

AU - Rubio, Sandra Navaz

AU - Freeman, Helen M.

AU - Tobler, Dominique J.

AU - Benning, Liane G.

PY - 2018

Y1 - 2018

N2 - 'Green rust' intercalated with aromatic sulfonates can potentially be effective materials for the treatment of soil and groundwater polluted with chlorinated benzenes. We investigated the potential intercalation of benzene sulfonate (BzS) and 1,3-benzene disulfonate (BzDS) into green rust sulfate (GR SO4 ) via ion exchange. The GR SO4 reacted with various concentrations of sulfonates were characterized by X-ray diffraction, X-ray scattering and transmission electron microscopy. GR interacted with BzDS did not result in intercalation due to stearic hindrance and electrostatic repulsion. For BzS, mixtures of GR SO4 and GR-BzS (d 001 = 14.3 Å) were obtained at molar equivalents of ion exchange capacity >5. The intercalation of BzS in the GR structure is limited (~18% intercalation) since BzS cannot fully replace SO 4 2- . The BzS molecules are likely arranged in the interlayer as a dehydrated monolayer with the -SO 3 groups facing away in alternate directions.

AB - 'Green rust' intercalated with aromatic sulfonates can potentially be effective materials for the treatment of soil and groundwater polluted with chlorinated benzenes. We investigated the potential intercalation of benzene sulfonate (BzS) and 1,3-benzene disulfonate (BzDS) into green rust sulfate (GR SO4 ) via ion exchange. The GR SO4 reacted with various concentrations of sulfonates were characterized by X-ray diffraction, X-ray scattering and transmission electron microscopy. GR interacted with BzDS did not result in intercalation due to stearic hindrance and electrostatic repulsion. For BzS, mixtures of GR SO4 and GR-BzS (d 001 = 14.3 Å) were obtained at molar equivalents of ion exchange capacity >5. The intercalation of BzS in the GR structure is limited (~18% intercalation) since BzS cannot fully replace SO 4 2- . The BzS molecules are likely arranged in the interlayer as a dehydrated monolayer with the -SO 3 groups facing away in alternate directions.

KW - Iron (oxyhydr)oxides

KW - layered double hydroxide

KW - sulfonates

U2 - 10.1016/j.egypro.2018.07.023

DO - 10.1016/j.egypro.2018.07.023

M3 - Conference article

AN - SCOPUS:85058780534

SN - 1876-6102

VL - 146

SP - 179

EP - 187

JO - Energy Procedia

JF - Energy Procedia

T2 - 2018 International Carbon Conference, ICC 2018

Y2 - 10 September 2018 through 14 September 2018

ER -