Effect of added metal chelating organosilane on mesoporous titanosilicate formation properties

Michael A. Markowitz; Shalini Jayasundera; Joel B. Miller; John Klaehn; Mark C. Burleigh; Mark S. Spector; Stephen L. Golledge; David G. Castner; Bruce P. Gaber

doi:10.1039/b306114k

Effect of added metal chelating organosilane on mesoporous titanosilicate formation properties

Michael A. Markowitz, Shalini Jayasundera, Joel B. Miller, John Klaehn, Mark C. Burleigh, Mark S. Spector, Stephen L. Golledge, David G. Castner, Bruce P. Gaber

Energy & Environmental Science & Technology

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

4 Scopus citations

Abstract

We describe the effects of adding the organosilane n-(trimethoxysilylpropyl)ethylenediaminetriacetic acid (EDATAS) during hydrothermal synthesis on the formation properties of titanium containing SBA-15 mesoporous silica. X-ray photoelectron spectroscopy revealed that the Si/Ti atomic ratio decreased significantly with the addition of the organosilane compared to the non-funtionalized silicates, showing that the EDATAS silicates contained more surface titanium. X-ray powder diffraction and nitrogen gas adsorption analysis revealed that the functionalized titanosilicates were ordered mesoporous materials with narrow pore size distributions with a BJH pore size of 92–96 Å. Solid state CP/MAS NMR experiments demonstrated that addition of EDATAS during hydrothermal synthesis produced a mesoporous silica with 6-coordinated Ti(iv) coordination. Using the same synthesis without the EDATAS, mesoporous silicas with 4-coordinated Ti(iv) were produced.

Original language	English
Pages (from-to)	3398-3403
Number of pages	6
Journal	Journal of the Chemical Society. Dalton Transactions
Volume	3
Issue number	17
DOIs	https://doi.org/10.1039/b306114k
State	Published - Aug 19 2003

Keywords

Chemical bonding
Nanochemistry
Nmr spectroscopy
Sol-gel processing
Template synthesis

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title = "Effect of added metal chelating organosilane on mesoporous titanosilicate formation properties",

abstract = "We describe the effects of adding the organosilane n-(trimethoxysilylpropyl)ethylenediaminetriacetic acid (EDATAS) during hydrothermal synthesis on the formation properties of titanium containing SBA-15 mesoporous silica. X-ray photoelectron spectroscopy revealed that the Si/Ti atomic ratio decreased significantly with the addition of the organosilane compared to the non-funtionalized silicates, showing that the EDATAS silicates contained more surface titanium. X-ray powder diffraction and nitrogen gas adsorption analysis revealed that the functionalized titanosilicates were ordered mesoporous materials with narrow pore size distributions with a BJH pore size of 92–96 {\AA}. Solid state CP/MAS NMR experiments demonstrated that addition of EDATAS during hydrothermal synthesis produced a mesoporous silica with 6-coordinated Ti(iv) coordination. Using the same synthesis without the EDATAS, mesoporous silicas with 4-coordinated Ti(iv) were produced.",

keywords = "Chemical bonding, Nanochemistry, Nmr spectroscopy, Sol-gel processing, Template synthesis",

author = "Markowitz, {Michael A.} and Shalini Jayasundera and Miller, {Joel B.} and John Klaehn and Burleigh, {Mark C.} and Spector, {Mark S.} and Golledge, {Stephen L.} and Castner, {David G.} and Gaber, {Bruce P.}",

year = "2003",

month = aug,

day = "19",

doi = "10.1039/b306114k",

language = "English",

volume = "3",

pages = "3398--3403",

journal = "Journal of the Chemical Society. Dalton Transactions",

issn = "1477-9226",

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T1 - Effect of added metal chelating organosilane on mesoporous titanosilicate formation properties

AU - Markowitz, Michael A.

AU - Jayasundera, Shalini

AU - Miller, Joel B.

AU - Klaehn, John

AU - Burleigh, Mark C.

AU - Spector, Mark S.

AU - Golledge, Stephen L.

AU - Castner, David G.

AU - Gaber, Bruce P.

PY - 2003/8/19

Y1 - 2003/8/19

N2 - We describe the effects of adding the organosilane n-(trimethoxysilylpropyl)ethylenediaminetriacetic acid (EDATAS) during hydrothermal synthesis on the formation properties of titanium containing SBA-15 mesoporous silica. X-ray photoelectron spectroscopy revealed that the Si/Ti atomic ratio decreased significantly with the addition of the organosilane compared to the non-funtionalized silicates, showing that the EDATAS silicates contained more surface titanium. X-ray powder diffraction and nitrogen gas adsorption analysis revealed that the functionalized titanosilicates were ordered mesoporous materials with narrow pore size distributions with a BJH pore size of 92–96 Å. Solid state CP/MAS NMR experiments demonstrated that addition of EDATAS during hydrothermal synthesis produced a mesoporous silica with 6-coordinated Ti(iv) coordination. Using the same synthesis without the EDATAS, mesoporous silicas with 4-coordinated Ti(iv) were produced.

AB - We describe the effects of adding the organosilane n-(trimethoxysilylpropyl)ethylenediaminetriacetic acid (EDATAS) during hydrothermal synthesis on the formation properties of titanium containing SBA-15 mesoporous silica. X-ray photoelectron spectroscopy revealed that the Si/Ti atomic ratio decreased significantly with the addition of the organosilane compared to the non-funtionalized silicates, showing that the EDATAS silicates contained more surface titanium. X-ray powder diffraction and nitrogen gas adsorption analysis revealed that the functionalized titanosilicates were ordered mesoporous materials with narrow pore size distributions with a BJH pore size of 92–96 Å. Solid state CP/MAS NMR experiments demonstrated that addition of EDATAS during hydrothermal synthesis produced a mesoporous silica with 6-coordinated Ti(iv) coordination. Using the same synthesis without the EDATAS, mesoporous silicas with 4-coordinated Ti(iv) were produced.

KW - Chemical bonding

KW - Nanochemistry

KW - Nmr spectroscopy

KW - Sol-gel processing

KW - Template synthesis

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U2 - 10.1039/b306114k

DO - 10.1039/b306114k

M3 - Article

AN - SCOPUS:0141853296

SN - 1477-9226

VL - 3

SP - 3398

EP - 3403

JO - Journal of the Chemical Society. Dalton Transactions

JF - Journal of the Chemical Society. Dalton Transactions

IS - 17

ER -

Effect of added metal chelating organosilane on mesoporous titanosilicate formation properties

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Keywords

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