Research output: Contribution to journal › Article › peer-review
Silicate Fiberglasses Modified with Quaternary Ammonium Base for Natural Gas Desulfurization. / Bal'zhinimaev, Bair S.; Kovalyov, Evgenii V.; Suknev, Alexei P. et al.
In: Industrial and Engineering Chemistry Research, Vol. 56, No. 37, 20.09.2017, p. 10318-10328.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Silicate Fiberglasses Modified with Quaternary Ammonium Base for Natural Gas Desulfurization
AU - Bal'zhinimaev, Bair S.
AU - Kovalyov, Evgenii V.
AU - Suknev, Alexei P.
AU - Paukshtis, Eugenii A.
AU - Khabibulin, Dzhalil F.
AU - Batueva, Irina S.
AU - Salanov, Aleksey N.
AU - Riley, Mark G.
PY - 2017/9/20
Y1 - 2017/9/20
N2 - A new gel-like film was generated on the surface of silicate fiberglass (FG) under hydrothermal treatment with tetramethylammonium hydroxide (TMAH) water solution. By means of scanning electron microscopy (SEM)/high resolution transmission electron microscopy (HRTEM), 1H NMR magic angle spinning (MAS), and diffuse reflectance infrared fourier transform spectroscopy (DRIFTS), we revealed this film is a phase with density less than pristine FG, where TMA species, as the H2S adsorption sites, are confined. Indeed, FGs modified in this way exhibited a rather high dynamic adsorption capacity which was proportional to concentration of TMA cations bonded with very basic oxygen of Broensted acid residue. The N-modified FG sorbents showed good regenerability when in the presence of water, and the adsorbed hydrogen sulfide on the TMA+--O-Si ion pair was easily desorbed at room temperature. This gives grounds to conclude that the process of hydrogen sulfide sorption on N-modified FGs is reversible and proceeds without a loss of adsorption capacity. Indeed, N-modified FGs remained stable during several adsorption-desorption cycles. (Figure Presented).
AB - A new gel-like film was generated on the surface of silicate fiberglass (FG) under hydrothermal treatment with tetramethylammonium hydroxide (TMAH) water solution. By means of scanning electron microscopy (SEM)/high resolution transmission electron microscopy (HRTEM), 1H NMR magic angle spinning (MAS), and diffuse reflectance infrared fourier transform spectroscopy (DRIFTS), we revealed this film is a phase with density less than pristine FG, where TMA species, as the H2S adsorption sites, are confined. Indeed, FGs modified in this way exhibited a rather high dynamic adsorption capacity which was proportional to concentration of TMA cations bonded with very basic oxygen of Broensted acid residue. The N-modified FG sorbents showed good regenerability when in the presence of water, and the adsorbed hydrogen sulfide on the TMA+--O-Si ion pair was easily desorbed at room temperature. This gives grounds to conclude that the process of hydrogen sulfide sorption on N-modified FGs is reversible and proceeds without a loss of adsorption capacity. Indeed, N-modified FGs remained stable during several adsorption-desorption cycles. (Figure Presented).
KW - HYDROGEN-SULFIDE ADSORPTION
KW - ROOM-TEMPERATURE
KW - H2S
KW - SORBENTS
KW - REMOVAL
KW - GLASS
KW - OXIDE
KW - OXIDATION
KW - CATALYSTS
KW - STREAMS
UR - http://www.scopus.com/inward/record.url?scp=85029767774&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.7b01389
DO - 10.1021/acs.iecr.7b01389
M3 - Article
AN - SCOPUS:85029767774
VL - 56
SP - 10318
EP - 10328
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
SN - 0888-5885
IS - 37
ER -
ID: 9907162