Preparation and characterisation of chemisorbents based on heteropolyacids supported on synthetic mesoporous carbons and silica
Lapkin, Alexei ; Bozkaya, Bengü ; Mays, Tim ; Borello, Luisa ; Edler, Karen LU
and Crittenden, Barry
(2003)
In Catalysis Today
81(4).
p.611-621
- Abstract
The preparation of chemisorbents based on tungsto- and molybdophosphoric acids supported on two types of synthetic mesoporous carbons and two types of mesoporous silica is described. Strong solid acids with good accessibility to acid sites may potentially be effective adsorbents for the removal of basic molecular impurities, such as amines, from ultrapure manufacturing environments. Prepared materials were characterised by scanning electron microscopy, nitrogen adsorption, Fourier-transform infrared spectroscopy, powder X-ray diffraction, and equilibrium ammonia uptake. Composites of SBA-15 with heteropolyacids were synthesised. It was shown that the inclusion of HPAs into SBA-15 results in the loss of long range order. Adsorbents based... (More)
The preparation of chemisorbents based on tungsto- and molybdophosphoric acids supported on two types of synthetic mesoporous carbons and two types of mesoporous silica is described. Strong solid acids with good accessibility to acid sites may potentially be effective adsorbents for the removal of basic molecular impurities, such as amines, from ultrapure manufacturing environments. Prepared materials were characterised by scanning electron microscopy, nitrogen adsorption, Fourier-transform infrared spectroscopy, powder X-ray diffraction, and equilibrium ammonia uptake. Composites of SBA-15 with heteropolyacids were synthesised. It was shown that the inclusion of HPAs into SBA-15 results in the loss of long range order. Adsorbents based on the HPAs impregnated into the supports with the open-pore morphology (Novacarb and SBA-15) were found to be promising materials. A composite of tungstophosphoric acid with sol-gel SiO2 was found to have the highest ammonia uptake.
(Less)
- author
- Lapkin, Alexei
; Bozkaya, Bengü
; Mays, Tim
; Borello, Luisa
; Edler, Karen
LU
and Crittenden, Barry
- publishing date
- 2003-07-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Chemisorption, Clean room, Heteropolyacids, Mesoporous materials, Synthetic carbons
- in
- Catalysis Today
- volume
- 81
- issue
- 4
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:0038825105
- ISSN
- 0920-5861
- DOI
- 10.1016/S0920-5861(03)00159-7
- language
- English
- LU publication?
- no
- id
- a580a871-f9d2-4151-ae00-507be9bbeb14
- date added to LUP
- 2023-05-04 18:43:02
- date last changed
- 2023-06-13 12:23:40
@article{a580a871-f9d2-4151-ae00-507be9bbeb14,
abstract = {{<p>The preparation of chemisorbents based on tungsto- and molybdophosphoric acids supported on two types of synthetic mesoporous carbons and two types of mesoporous silica is described. Strong solid acids with good accessibility to acid sites may potentially be effective adsorbents for the removal of basic molecular impurities, such as amines, from ultrapure manufacturing environments. Prepared materials were characterised by scanning electron microscopy, nitrogen adsorption, Fourier-transform infrared spectroscopy, powder X-ray diffraction, and equilibrium ammonia uptake. Composites of SBA-15 with heteropolyacids were synthesised. It was shown that the inclusion of HPAs into SBA-15 results in the loss of long range order. Adsorbents based on the HPAs impregnated into the supports with the open-pore morphology (Novacarb and SBA-15) were found to be promising materials. A composite of tungstophosphoric acid with sol-gel SiO<sub>2</sub> was found to have the highest ammonia uptake.</p>}},
author = {{Lapkin, Alexei and Bozkaya, Bengü and Mays, Tim and Borello, Luisa and Edler, Karen and Crittenden, Barry}},
issn = {{0920-5861}},
keywords = {{Chemisorption; Clean room; Heteropolyacids; Mesoporous materials; Synthetic carbons}},
language = {{eng}},
month = {{07}},
number = {{4}},
pages = {{611--621}},
publisher = {{Elsevier}},
series = {{Catalysis Today}},
title = {{Preparation and characterisation of chemisorbents based on heteropolyacids supported on synthetic mesoporous carbons and silica}},
url = {{http://dx.doi.org/10.1016/S0920-5861(03)00159-7}},
doi = {{10.1016/S0920-5861(03)00159-7}},
volume = {{81}},
year = {{2003}},
}