Imperial College London
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Professor Geoffrey Maitland CBE FREng

Faculty of Engineering, Department of Chemical Engineering

Professor of Energy Engineering
 
 
 
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Contact

 

+44 (0)20 7594 1830g.maitland Website CV

 
 
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Assistant

 

Mrs Sarah Payne +44 (0)20 7594 5567

 
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Location

 

401ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bian:2021:10.3390/cryst11020201,
author = {Bian, H and Ai, L and Hellgardt, K and Maitland, GC and Heng, JYY},
doi = {10.3390/cryst11020201},
journal = {Crystals},
pages = {1--16},
title = {Phase behaviour of methane hydrates in confined media},
url = {http://dx.doi.org/10.3390/cryst11020201},
volume = {11},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In a study designed to investigate the melting behaviour of natural gas hydrates which are usually formed in porous mineral sediments rather than in bulk, hydrate phase equilibria for binary methane and water mixtures were studied using high-pressure differential scanning calorimetry in mesoporous and macroporous silica particles having controlled pore sizes ranging from 8.5 nm to 195.7 nm. A dynamic oscillating temperature method was used to form methane hydrates reproducibly and then determine their decomposition behaviour—melting points and enthalpies of melting. Significant decreases in dissociation temperature were observed as the pore size decreased (over 6 K for 8.5 nm pores). This behaviour is consistent with the Gibbs–Thomson equation, which was used to determine hydrate–water interfacial energies. The melting data up to 50 MPa indicated a strong, essentially logarithmic, dependence on pressure, which here has been ascribed to the pressure dependence of the interfacial energy in the confined media. An empirical modification of the Gibbs–Thomson equation is proposed to include this effect.
AU  - Bian,H
AU  - Ai,L
AU  - Hellgardt,K
AU  - Maitland,GC
AU  - Heng,JYY
DO  - 10.3390/cryst11020201
EP  - 16
PY  - 2021///
SN  - 2073-4352
SP  - 1
TI  - Phase behaviour of methane hydrates in confined media
T2  - Crystals
UR  - http://dx.doi.org/10.3390/cryst11020201
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000622457300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.mdpi.com/2073-4352/11/2/201
UR  - http://hdl.handle.net/10044/1/87604
VL  - 11
ER  -
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