Si NMR relaxation of silicated nanoparticles in tetraethoxysilane- tetrapropylammonium hydroxide-water system (TEOS-TPAOH-H2O)

Mohamed Haouas; David P. Petry; Michael W. Anderson; Francis Taulelle

doi:10.1021/jp903454f

Si NMR relaxation of silicated nanoparticles in tetraethoxysilane- tetrapropylammonium hydroxide-water system (TEOS-TPAOH-H2O)

Mohamed Haouas, David P. Petry, Michael W. Anderson, Francis Taulelle

Research output: Contribution to journal › Article › peer-review

Abstract

Silicon-29 longitudinal (T1) and transverse (T2) NMR relaxation times have been measured in the clear solution precursor of silicalite-1 of composition 25 TEOS -5 TPAOH-400 H2O. The nanoparticles as well as the silicate oligomers are giving rise to observable resonances. An unusually long T1 relaxation time of 126 s is observed for Q4 in nanoparticles. Proper care for acquisition is therefore required for quantifying the distribution of Qn of the nanoparticles, an essential measurement to follow the nanoparticles connectivity evolution. © 2009 American Chemical Society.

Original language	English
Pages (from-to)	10838-10841
Number of pages	3
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	25
DOIs	https://doi.org/10.1021/jp903454f
Publication status	Published - 25 Jun 2009

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title = "Si NMR relaxation of silicated nanoparticles in tetraethoxysilane- tetrapropylammonium hydroxide-water system (TEOS-TPAOH-H2O)",

abstract = "Silicon-29 longitudinal (T1) and transverse (T2) NMR relaxation times have been measured in the clear solution precursor of silicalite-1 of composition 25 TEOS -5 TPAOH-400 H2O. The nanoparticles as well as the silicate oligomers are giving rise to observable resonances. An unusually long T1 relaxation time of 126 s is observed for Q4 in nanoparticles. Proper care for acquisition is therefore required for quantifying the distribution of Qn of the nanoparticles, an essential measurement to follow the nanoparticles connectivity evolution. {\textcopyright} 2009 American Chemical Society.",

author = "Mohamed Haouas and Petry, {David P.} and Anderson, {Michael W.} and Francis Taulelle",

year = "2009",

month = jun,

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doi = "10.1021/jp903454f",

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journal = "Journal of Physical Chemistry C",

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T1 - Si NMR relaxation of silicated nanoparticles in tetraethoxysilane- tetrapropylammonium hydroxide-water system (TEOS-TPAOH-H2O)

AU - Haouas, Mohamed

AU - Petry, David P.

AU - Anderson, Michael W.

AU - Taulelle, Francis

PY - 2009/6/25

Y1 - 2009/6/25

N2 - Silicon-29 longitudinal (T1) and transverse (T2) NMR relaxation times have been measured in the clear solution precursor of silicalite-1 of composition 25 TEOS -5 TPAOH-400 H2O. The nanoparticles as well as the silicate oligomers are giving rise to observable resonances. An unusually long T1 relaxation time of 126 s is observed for Q4 in nanoparticles. Proper care for acquisition is therefore required for quantifying the distribution of Qn of the nanoparticles, an essential measurement to follow the nanoparticles connectivity evolution. © 2009 American Chemical Society.

AB - Silicon-29 longitudinal (T1) and transverse (T2) NMR relaxation times have been measured in the clear solution precursor of silicalite-1 of composition 25 TEOS -5 TPAOH-400 H2O. The nanoparticles as well as the silicate oligomers are giving rise to observable resonances. An unusually long T1 relaxation time of 126 s is observed for Q4 in nanoparticles. Proper care for acquisition is therefore required for quantifying the distribution of Qn of the nanoparticles, an essential measurement to follow the nanoparticles connectivity evolution. © 2009 American Chemical Society.

U2 - 10.1021/jp903454f

DO - 10.1021/jp903454f

M3 - Article

SN - 1932-7447

VL - 113

SP - 10838

EP - 10841

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 25

ER -

Si NMR relaxation of silicated nanoparticles in tetraethoxysilane- tetrapropylammonium hydroxide-water system (TEOS-TPAOH-H2O)

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