The effect of hydrothermal temperature on the properties of SBA-15 materials
In present work, ordered mesoporous material SBA-15 was synthesized by using poly (alkylene oxide) block copolymer (Pluronic P123) as template and ethylsilicate as silica source in weak acid environment in a wide range of temperature. The focus of synthesis research was high hydrothermal temperature...
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doaj-c552d3495f514015baea43a6e6117c272020-11-25T03:24:39ZengElsevierHeliyon2405-84402020-08-0168e04436The effect of hydrothermal temperature on the properties of SBA-15 materialsKaiyu Bai0Junsheng Hao1Yongxing Yang2Aniu Qian3National Demonstration Center for Experimental Chemistry Education (Shanxi University), School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of ChinaNational Demonstration Center for Experimental Chemistry Education (Shanxi University), School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of ChinaNational Demonstration Center for Experimental Chemistry Education (Shanxi University), School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of China; Corresponding author.Institute of Resources and Environment Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of China; Corresponding author.In present work, ordered mesoporous material SBA-15 was synthesized by using poly (alkylene oxide) block copolymer (Pluronic P123) as template and ethylsilicate as silica source in weak acid environment in a wide range of temperature. The focus of synthesis research was high hydrothermal temperature. The obtained products were characterized by various techniques, including XRD, N2 sorption isotherms, FTIR spectroscopy and thermogravimetric. The effect of hydrothermal temperature on the specific surface area, pore volume and pore size of SBA-15 products was investigated systematically. As the hydrothermal temperature increases from the 100–120 °C, the specific surface area and the pore volume of the mesoporous molecular sieve increase greatly. When the hydrothermal temperature increase further, the pore volume of the mesoporous molecular sieve increase continually. But the specific surface area decrease significantly. When the hydrothermal temperature is too high (over 140 °C), the order degree begins to decrease, So the specific surface area and pore volume decrease significantly because the pores structure have significant destruction and collapse. Mechanism and structural characteristics of P123 block copolymer could explain in detail the effect of hydrothermal temperature on the property and structure of mesoporous molecular sieve SBA-15.http://www.sciencedirect.com/science/article/pii/S2405844020312809Materials chemistryTheoretical chemistrySBA-15SynthesisHydrothermalMesopore |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kaiyu Bai Junsheng Hao Yongxing Yang Aniu Qian |
spellingShingle |
Kaiyu Bai Junsheng Hao Yongxing Yang Aniu Qian The effect of hydrothermal temperature on the properties of SBA-15 materials Heliyon Materials chemistry Theoretical chemistry SBA-15 Synthesis Hydrothermal Mesopore |
author_facet |
Kaiyu Bai Junsheng Hao Yongxing Yang Aniu Qian |
author_sort |
Kaiyu Bai |
title |
The effect of hydrothermal temperature on the properties of SBA-15 materials |
title_short |
The effect of hydrothermal temperature on the properties of SBA-15 materials |
title_full |
The effect of hydrothermal temperature on the properties of SBA-15 materials |
title_fullStr |
The effect of hydrothermal temperature on the properties of SBA-15 materials |
title_full_unstemmed |
The effect of hydrothermal temperature on the properties of SBA-15 materials |
title_sort |
effect of hydrothermal temperature on the properties of sba-15 materials |
publisher |
Elsevier |
series |
Heliyon |
issn |
2405-8440 |
publishDate |
2020-08-01 |
description |
In present work, ordered mesoporous material SBA-15 was synthesized by using poly (alkylene oxide) block copolymer (Pluronic P123) as template and ethylsilicate as silica source in weak acid environment in a wide range of temperature. The focus of synthesis research was high hydrothermal temperature. The obtained products were characterized by various techniques, including XRD, N2 sorption isotherms, FTIR spectroscopy and thermogravimetric. The effect of hydrothermal temperature on the specific surface area, pore volume and pore size of SBA-15 products was investigated systematically. As the hydrothermal temperature increases from the 100–120 °C, the specific surface area and the pore volume of the mesoporous molecular sieve increase greatly. When the hydrothermal temperature increase further, the pore volume of the mesoporous molecular sieve increase continually. But the specific surface area decrease significantly. When the hydrothermal temperature is too high (over 140 °C), the order degree begins to decrease, So the specific surface area and pore volume decrease significantly because the pores structure have significant destruction and collapse. Mechanism and structural characteristics of P123 block copolymer could explain in detail the effect of hydrothermal temperature on the property and structure of mesoporous molecular sieve SBA-15. |
topic |
Materials chemistry Theoretical chemistry SBA-15 Synthesis Hydrothermal Mesopore |
url |
http://www.sciencedirect.com/science/article/pii/S2405844020312809 |
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