Imperial College London
Alternate

ProfessorDarylWilliams

Faculty of Engineering, Department of Chemical Engineering

Professor of Particle Science
 
 
 
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Contact

 

+44 (0)20 7594 5611d.r.williams Website

 
 
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Location

 

439ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yu:2016:10.1016/j.ijggc.2016.10.012,
author = {Yu, LCY and Campbell, KLS and Williams, DR},
doi = {10.1016/j.ijggc.2016.10.012},
journal = {International Journal of Greenhouse Gas Control},
pages = {144--152},
title = {Carbon steel corrosion in piperazine-promoted blends under CO2 capture conditions},
url = {http://dx.doi.org/10.1016/j.ijggc.2016.10.012},
volume = {55},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Aqueous amine promoter blends have improved CO2 absorption capacity and uptake. Tertiary (3°) and sterically-hindered (SH) amines are favoured for their molar absorption ratio, (i.e. CO2 absorption capacity). With a promoter, namely piperazine (PZ), the ordinarily slow reaction kinetics of a 3°/SH amine is accelerated. Amine blends of 30 and 50% by weight, MDEA + PZ and AMP + PZ, were tested using immersion corrosion techniques at 120 °C. In all cases, a siderite (FeCO3) product layer was formed on the surface of the carbon steel coupons. Aqueous PZ solutions produced thin layers with comparatively lower Fe ion concentrations than blended solutions. The fast CO2 capture kinetics of PZ, and therefore carbonate formation, makes the rapid reaction possible due to readily available Fe ions oxidised on the surface. The replacement of PZ content in a blend, by MDEA or AMP, resulted in slower formation of siderite and variably poorer corrosion protection. Critically, the use of AMP in the blend offers better protection against corrosion, shown by lower concentration of Fe ions in the bulk solution than parallel MDEA solutions. This can be attributed to the faster formation of carbonate species by AMP, as a SH amine, which also results in more imperfect crystals.
AU  - Yu,LCY
AU  - Campbell,KLS
AU  - Williams,DR
DO  - 10.1016/j.ijggc.2016.10.012
EP  - 152
PY  - 2016///
SN  - 1750-5836
SP  - 144
TI  - Carbon steel corrosion in piperazine-promoted blends under CO2 capture conditions
T2  - International Journal of Greenhouse Gas Control
UR  - http://dx.doi.org/10.1016/j.ijggc.2016.10.012
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000389144600013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S1750583616304467
UR  - http://hdl.handle.net/10044/1/44114
VL  - 55
ER  -
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