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Synthesis and characteristics of novel layered silicate HUS-7 using benzyltrimethylammonium hydroxide and its unique and selective phenol adsorption behavior
Ist Teil von
Journal of materials chemistry. A, Materials for energy and sustainability, 2014-01, Vol.2 (10), p.3372-3380
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A new layered silicate, HUS-7, was synthesized using amorphous silica, sodium hydroxide, biphenyl, and benzyltrimethylammonium hydroxide as a structure-directing agent (SDA). Structural analyses by powder X-ray diffractometry and solid-state magic-angle-spinning (MAS) NMR spectroscopy revealed that HUS-7 had a layered structure, which was composed of four-, five-, and six-membered rings. Its framework topology was partially similar to that of a HEU-type zeolite including the bre(10T)-type composite building unit. Structural refinement by the Rietveld method showed that the benzyltrimethylammonium cations used as the SDAs were incorporated into the interlayers. The presence of hydrogen bonding between adjacent terminal O atoms was clearly revealed by super(1)H MAS NMR spectroscopy and the electron-density distribution obtained by the maximum entropy method. HUS-7 selectively and effectively adsorbed phenol from acetonitrile solution containing benzene and phenol. The adsorption of phenol occurred through the exchange of water molecules in the interlayers with phenol.
Sprache
Englisch
Identifikatoren
ISSN: 2050-7488
eISSN: 2050-7496
DOI: 10.1039/c3ta14848c
Titel-ID: cdi_proquest_miscellaneous_1520942018
Format
–
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