Acid sites modulation of siliceous-based mesoporous material by post synthesis methods

Cristina Pizzolitto; Elena Ghedini; Somayeh Taghavi; Federica Menegazzo; Giuseppe Cruciani; Markus Peurla; Kari Eränen; Ivo Heinmaa; Atte Aho; Narendra Kumar; Dmitry Yu Murzin; Tapio Salmi; Michela Signoretto

doi:10.1016/j.micromeso.2021.111459

Acid sites modulation of siliceous-based mesoporous material by post synthesis methods

Cristina Pizzolitto, Elena Ghedini, Somayeh Taghavi, Federica Menegazzo, Giuseppe Cruciani, Markus Peurla, Kari Eränen, Ivo Heinmaa, Atte Aho, Narendra Kumar, Dmitry Yu Murzin, Tapio Salmi, Michela Signoretto^*

^*Corresponding author for this work

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

3 Citations (Scopus)

31 Downloads (Pure)

Abstract

The present work is focused on the improvement of an effective approach to tailor the acidity of silica alumina composite. SBA-15 was selected based on high surface area, uniform porosity and large mesopores. Modification of SBA-15 was performed to improve both Lewis and Brønsted acidities and hence catalyst activity. Therefore, introduction of alumina as a co-catalyst was carried out to enhance Lewis acid sites through its incorporation into the silica network. Evaporation impregnation method was evaluated for incorporation of aluminium to SBA-15 and materials with different SiO₂/Al₂O₃ ratios were prepared. Acidity and morphological features of the materials were assessed using XRD, EDX, SEM, TEM, N₂-physisorption, ²⁷Al MAS-NMR and FTIR with pyridine. Brønsted acidity was attained by the introduction of sulfonic acid groups in the final catalyst via the post-synthesis grafting method. Therefore, the balanced Lewis and Brønsted acidities and proper porosity of modified SBA-15 led to its efficient performance in the conversion of glucose as a biomass-based model component to levulinic acid.

Original language	English
Article number	111459
Journal	Microporous and Mesoporous Materials
Volume	328
DOIs	https://doi.org/10.1016/j.micromeso.2021.111459
Publication status	Published - Dec 2021
MoE publication type	A1 Journal article-refereed

Keywords

Acid site modification
Brønsted acidity
Lewis acidity
Porosity
Promoted SBA-15

Access to Document

10.1016/j.micromeso.2021.111459

revised manuscript acceptedAccepted author manuscript, 1.24 MBLicence: CC BY-NC-ND

https://urn.fi/URN:NBN:fi-fe20231201150585

Cite this

Pizzolitto, C., Ghedini, E., Taghavi, S., Menegazzo, F., Cruciani, G., Peurla, M., Eränen, K., Heinmaa, I., Aho, A., Kumar, N., Murzin, D. Y., Salmi, T., & Signoretto, M. (2021). Acid sites modulation of siliceous-based mesoporous material by post synthesis methods. Microporous and Mesoporous Materials, 328, Article 111459. https://doi.org/10.1016/j.micromeso.2021.111459

@article{99fe501aad1f40a4a7b40123ca231eee,

title = "Acid sites modulation of siliceous-based mesoporous material by post synthesis methods",

abstract = "The present work is focused on the improvement of an effective approach to tailor the acidity of silica alumina composite. SBA-15 was selected based on high surface area, uniform porosity and large mesopores. Modification of SBA-15 was performed to improve both Lewis and Br{\o}nsted acidities and hence catalyst activity. Therefore, introduction of alumina as a co-catalyst was carried out to enhance Lewis acid sites through its incorporation into the silica network. Evaporation impregnation method was evaluated for incorporation of aluminium to SBA-15 and materials with different SiO2/Al2O3 ratios were prepared. Acidity and morphological features of the materials were assessed using XRD, EDX, SEM, TEM, N2-physisorption, 27Al MAS-NMR and FTIR with pyridine. Br{\o}nsted acidity was attained by the introduction of sulfonic acid groups in the final catalyst via the post-synthesis grafting method. Therefore, the balanced Lewis and Br{\o}nsted acidities and proper porosity of modified SBA-15 led to its efficient performance in the conversion of glucose as a biomass-based model component to levulinic acid.",

keywords = "Acid site modification, Br{\o}nsted acidity, Lewis acidity, Porosity, Promoted SBA-15",

author = "Cristina Pizzolitto and Elena Ghedini and Somayeh Taghavi and Federica Menegazzo and Giuseppe Cruciani and Markus Peurla and Kari Er{\"a}nen and Ivo Heinmaa and Atte Aho and Narendra Kumar and Murzin, {Dmitry Yu} and Tapio Salmi and Michela Signoretto",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = dec,

doi = "10.1016/j.micromeso.2021.111459",

language = "English",

volume = "328",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier",

}

TY - JOUR

T1 - Acid sites modulation of siliceous-based mesoporous material by post synthesis methods

AU - Pizzolitto, Cristina

AU - Ghedini, Elena

AU - Taghavi, Somayeh

AU - Menegazzo, Federica

AU - Cruciani, Giuseppe

AU - Peurla, Markus

AU - Eränen, Kari

AU - Heinmaa, Ivo

AU - Aho, Atte

AU - Kumar, Narendra

AU - Murzin, Dmitry Yu

AU - Salmi, Tapio

AU - Signoretto, Michela

PY - 2021/12

Y1 - 2021/12

N2 - The present work is focused on the improvement of an effective approach to tailor the acidity of silica alumina composite. SBA-15 was selected based on high surface area, uniform porosity and large mesopores. Modification of SBA-15 was performed to improve both Lewis and Brønsted acidities and hence catalyst activity. Therefore, introduction of alumina as a co-catalyst was carried out to enhance Lewis acid sites through its incorporation into the silica network. Evaporation impregnation method was evaluated for incorporation of aluminium to SBA-15 and materials with different SiO2/Al2O3 ratios were prepared. Acidity and morphological features of the materials were assessed using XRD, EDX, SEM, TEM, N2-physisorption, 27Al MAS-NMR and FTIR with pyridine. Brønsted acidity was attained by the introduction of sulfonic acid groups in the final catalyst via the post-synthesis grafting method. Therefore, the balanced Lewis and Brønsted acidities and proper porosity of modified SBA-15 led to its efficient performance in the conversion of glucose as a biomass-based model component to levulinic acid.

AB - The present work is focused on the improvement of an effective approach to tailor the acidity of silica alumina composite. SBA-15 was selected based on high surface area, uniform porosity and large mesopores. Modification of SBA-15 was performed to improve both Lewis and Brønsted acidities and hence catalyst activity. Therefore, introduction of alumina as a co-catalyst was carried out to enhance Lewis acid sites through its incorporation into the silica network. Evaporation impregnation method was evaluated for incorporation of aluminium to SBA-15 and materials with different SiO2/Al2O3 ratios were prepared. Acidity and morphological features of the materials were assessed using XRD, EDX, SEM, TEM, N2-physisorption, 27Al MAS-NMR and FTIR with pyridine. Brønsted acidity was attained by the introduction of sulfonic acid groups in the final catalyst via the post-synthesis grafting method. Therefore, the balanced Lewis and Brønsted acidities and proper porosity of modified SBA-15 led to its efficient performance in the conversion of glucose as a biomass-based model component to levulinic acid.

KW - Acid site modification

KW - Brønsted acidity

KW - Lewis acidity

KW - Porosity

KW - Promoted SBA-15

UR - http://www.scopus.com/inward/record.url?scp=85116388891&partnerID=8YFLogxK

U2 - 10.1016/j.micromeso.2021.111459

DO - 10.1016/j.micromeso.2021.111459

M3 - Article

AN - SCOPUS:85116388891

SN - 1387-1811

VL - 328

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

M1 - 111459

ER -

Acid sites modulation of siliceous-based mesoporous material by post synthesis methods

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this