Title
Zeolites as coating materials for Fiber Bragg Grating chemical sensors for extreme conditions
Author
Snelders, D.J.M.
Valega Mackenzie, F.O.
Boersma, A.
Peeters, R.H.M.
Publication year
2016
Abstract
Important progress has been made towards the expanding of the limits of applicability of Fiber Bragg Grating (FBG) optical sensors. The development of new inorganic coatings consisting of MFI zeolite crystals (silicalite and ZSM-5) has opened up the possibility towards the use of this technology at high temperatures and pressures. Using two different, purposely-built experimental setups, it was shown that zeolite-coated FBG sensors can be used for chemical gas sensing, both at ambient as well as at extreme conditions, i.e. at temperatures of up to 260 °C and pressures of up to 200 bar. The sensors are selective for linear alkanes, show no significant cross-sensitivity towards H2O and CO2, are thermally and chemically robust and have response times of 5 min or less. Additionally, molecular simulations are used to bring insight into the underlying nature of the sensing mechanism.
Subject
Nano Technology
MAS - Materials Solutions
TS - Technical Sciences
Materials
Industrial Innovation
Chemical sensor
Extreme conditions
Fiber Bragg Grating
Gas sensing
Zeolite
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http://resolver.tudelft.nl/uuid:8d9a3ae1-5d44-48b2-b1fa-485dc5bbcda6
DOI
https://doi.org/10.1016/j.snb.2016.05.133
TNO identifier
546238
Publisher
Elsevier
ISSN
0925-4005
Source
Sensors and Actuators, B: Chemical, 235, 698-706
Document type
article