Synthesis of mesoporous carbons using silica templates impregnated with mineral acids

Yongbeom Seo; Kyoungsoo Kim; Younjae Jung; Ryong Ryoo

doi:10.1016/j.micromeso.2015.01.021

Synthesis of mesoporous carbons using silica templates impregnated with mineral acids

Yongbeom Seo
, Kyoungsoo Kim
, Younjae Jung
, Ryong Ryoo^*

^*Corresponding author for this work

Department of Chemistry

Korea Advanced Institute of Science and Technology
Institute for Basic Science

Research output: Contribution to journal › Journal article › peer-review

23 Scopus citations

Abstract

The pore walls of SBA-15, SBA-16 and KIT-6 mesoporous silica were acidified via the impregnation of phosphoric acid or sulfuric acid prior to their use as a template for mesoporous carbon synthesis with furfuryl alcohol. The effect of acid functionalization on carbon synthesis was investigated using X-ray powder diffraction, Ninf2/inf adsorption, transmission electron microscopy, and solid-state sup13/supC and sup31/supP NMR spectroscopy. The results indicated that a significant portion of the impregnated mineral acid formed an ester with the surface silanol group. Therefore, the impregnated acid could lead to the selective formation of carbon frameworks inside the template pores, preventing external carbon deposition even when furfuryl alcohol was used excessively. The mineral acid impregnation yielded highly faithful carbon replicas of the mesoporous silica.

Original language	English
Pages (from-to)	156-162
Number of pages	7
Journal	Microporous and Mesoporous Materials
Volume	207
DOIs	https://doi.org/10.1016/j.micromeso.2015.01.021
State	Published - 2015.05.1

Keywords

Mesoporous material
Mineral acid
NMR
Ordered mesoporous carbon
Solid-state
Template synthesis

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10.1016/j.micromeso.2015.01.021

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title = "Synthesis of mesoporous carbons using silica templates impregnated with mineral acids",

abstract = "The pore walls of SBA-15, SBA-16 and KIT-6 mesoporous silica were acidified via the impregnation of phosphoric acid or sulfuric acid prior to their use as a template for mesoporous carbon synthesis with furfuryl alcohol. The effect of acid functionalization on carbon synthesis was investigated using X-ray powder diffraction, Ninf2/inf adsorption, transmission electron microscopy, and solid-state sup13/supC and sup31/supP NMR spectroscopy. The results indicated that a significant portion of the impregnated mineral acid formed an ester with the surface silanol group. Therefore, the impregnated acid could lead to the selective formation of carbon frameworks inside the template pores, preventing external carbon deposition even when furfuryl alcohol was used excessively. The mineral acid impregnation yielded highly faithful carbon replicas of the mesoporous silica.",

keywords = "Mesoporous material, Mineral acid, NMR, Ordered mesoporous carbon, Solid-state, Template synthesis",

author = "Yongbeom Seo and Kyoungsoo Kim and Younjae Jung and Ryong Ryoo",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Inc.",

year = "2015",

month = may,

day = "1",

doi = "10.1016/j.micromeso.2015.01.021",

language = "English",

volume = "207",

pages = "156--162",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

}

TY - JOUR

T1 - Synthesis of mesoporous carbons using silica templates impregnated with mineral acids

AU - Seo, Yongbeom

AU - Kim, Kyoungsoo

AU - Jung, Younjae

AU - Ryoo, Ryong

PY - 2015/5/1

Y1 - 2015/5/1

N2 - The pore walls of SBA-15, SBA-16 and KIT-6 mesoporous silica were acidified via the impregnation of phosphoric acid or sulfuric acid prior to their use as a template for mesoporous carbon synthesis with furfuryl alcohol. The effect of acid functionalization on carbon synthesis was investigated using X-ray powder diffraction, Ninf2/inf adsorption, transmission electron microscopy, and solid-state sup13/supC and sup31/supP NMR spectroscopy. The results indicated that a significant portion of the impregnated mineral acid formed an ester with the surface silanol group. Therefore, the impregnated acid could lead to the selective formation of carbon frameworks inside the template pores, preventing external carbon deposition even when furfuryl alcohol was used excessively. The mineral acid impregnation yielded highly faithful carbon replicas of the mesoporous silica.

AB - The pore walls of SBA-15, SBA-16 and KIT-6 mesoporous silica were acidified via the impregnation of phosphoric acid or sulfuric acid prior to their use as a template for mesoporous carbon synthesis with furfuryl alcohol. The effect of acid functionalization on carbon synthesis was investigated using X-ray powder diffraction, Ninf2/inf adsorption, transmission electron microscopy, and solid-state sup13/supC and sup31/supP NMR spectroscopy. The results indicated that a significant portion of the impregnated mineral acid formed an ester with the surface silanol group. Therefore, the impregnated acid could lead to the selective formation of carbon frameworks inside the template pores, preventing external carbon deposition even when furfuryl alcohol was used excessively. The mineral acid impregnation yielded highly faithful carbon replicas of the mesoporous silica.

KW - Mesoporous material

KW - Mineral acid

KW - NMR

KW - Ordered mesoporous carbon

KW - Solid-state

KW - Template synthesis

UR - https://www.scopus.com/pages/publications/84922462749

U2 - 10.1016/j.micromeso.2015.01.021

DO - 10.1016/j.micromeso.2015.01.021

M3 - Journal article

AN - SCOPUS:84922462749

SN - 1387-1811

VL - 207

SP - 156

EP - 162

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

ER -

Synthesis of mesoporous carbons using silica templates impregnated with mineral acids

Abstract

Keywords

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