Neutron scattering studies of CO2-based gels
Lead Research Organisation:
University of Bristol
Department Name: Chemistry
Abstract
The project will deliver complex fluids based on dense CO2, incorporating designed self-assembly structures for modifying viscosity and surface tension of CO2. In the medium term, these systems have potential to improve carbon capture technologies, as well as to enhance industrial processing applications of CO2 as a solvent. Small-angle neutron scattering (SANS) is the method of choice for determining shapes and sizes in these complex fluids systems, since it is sensitive to the appropriate colloidal and molecular length scales relevant for optimizing viscous properties of the bulk liquid. Therefore, access to world-class SANS facilities is essential for the programme. The approach is to generate CO2-philic surfactants that will form worm-like micelles in CO2. The strategy is to marry up recent breakthroughs in CO2 surfactant design [1], with the ability of certain organic additives and inorganic counterions to induce entangled system-spanning thread-like micelles [2]. Feasibility for this approach has been demonstrated by previous SANS experiments on LOQ at ISIS.The student will be trained in relevant chemical techniques for sample preparation and in SANS methodology at ISIS. The self-assembly structures will be investigated by High-Pressure SANS at ISIS (LOQ and SANS 2d on TSII) using existing, and soon to be commissioned, dedicated HP-SANS high-pressure cells. High-pressure viscosity properties will be studied by collaborators Professors Enick and Beckman of the University of Pittsburgh (Appendix 1). 1) Designed CO2-philes Stabilize Water-in-Carbon Dioxide MicroemulsionsJ. Eastoe, S. Gold, S.Rogers, P. Wyatt, D. C. Steytler, A.Gurgel, R.K. Heenan, X. Fan, E.J. Beckman and R.M. Enick, Angewandte Chemie, 2006, 45, 3675-3677.2) Viscoelastic worm-like micelles and their applicationsJ. Yang, Current Opinion in Colloid and Interface Science, 2002, 7, 276-281.
People |
ORCID iD |
| Julian Eastoe (Principal Investigator) |
Publications
Brown P
(2013)
Stimuli-responsive surfactants
in Soft Matter
Brown P
(2012)
Microemulsions as tunable nanomagnets
in Soft Matter
Cummings S
(2011)
CO2: a wild solvent, tamed.
in Physical chemistry chemical physics : PCCP
Cummings S
(2012)
Design principles for supercritical CO2 viscosifiers
in Soft Matter
Cummings S
(2012)
Amphiphiles for supercritical CO2.
in Biochimie
Hollamby M
(2009)
Tri-Chain Hydrocarbon Surfactants as Designed Micellar Modifiers for Supercritical CO 2
in Angewandte Chemie
Hollamby MJ
(2009)
Tri-chain hydrocarbon surfactants as designed micellar modifiers for supercritical CO2.
in Angewandte Chemie (International ed. in English)
Mohamed A
(2012)
Hybrid CO 2 -philic Surfactants with Low Fluorine Content
in Langmuir
Mohamed A
(2011)
Low fluorine content CO2-philic surfactants.
in Langmuir : the ACS journal of surfaces and colloids
Mohamed A
(2015)
Economical and Efficient Hybrid Surfactant with Low Fluorine Content for the Stabilisation of Water-in-CO2 Microemulsions
in The Journal of Supercritical Fluids
Mohamed A
(2016)
Effect of surfactant headgroup on low-fluorine-content CO2-philic hybrid surfactants
in The Journal of Supercritical Fluids
Mohamed A
(2010)
Universal surfactant for water, oils, and CO2.
in Langmuir : the ACS journal of surfaces and colloids
Peach J
(2017)
Tuning Micellar Structures in Supercritical CO2 Using Surfactant and Amphiphile Mixtures.
in Langmuir : the ACS journal of surfaces and colloids
Sagisaka M
(2014)
Hyperbranched hydrocarbon surfactants give fluorocarbon-like low surface energies.
in Langmuir : the ACS journal of surfaces and colloids
Sagisaka M
(2015)
Periodic Formation/Breakdown of Lamellar Aggregates with Anionic Cyanobiphenyl Surfactants.
in Langmuir : the ACS journal of surfaces and colloids
Sagisaka M
(2012)
Effective and efficient surfactant for CO2 having only short fluorocarbon chains.
in Langmuir : the ACS journal of surfaces and colloids
Sagisaka M
(2011)
Super-efficient surfactant for stabilizing water-in-carbon dioxide microemulsions.
in Langmuir : the ACS journal of surfaces and colloids
Sagisaka M
(2015)
Effect of Fluorocarbon and Hydrocarbon Chain Lengths in Hybrid Surfactants for Supercritical CO2.
in Langmuir : the ACS journal of surfaces and colloids
Sagisaka M
(2016)
New Class of Amphiphiles Designed for Use in Water-in-Supercritical CO2 Microemulsions.
in Langmuir : the ACS journal of surfaces and colloids
Smith GN
(2014)
Magnetically-responsive electrophoretic silica organosols.
in Journal of colloid and interface science
Trickett K
(2010)
Microemulsion-based organogels containing inorganic nanoparticles
in Soft Matter
Trickett K
(2010)
Rod-like micelles thicken CO(2).
in Langmuir : the ACS journal of surfaces and colloids
Trickett K
(2010)
Hydrocarbon metallosurfactants for CO2.
in Langmuir : the ACS journal of surfaces and colloids
Xing D
(2012)
CO2-Soluble, Nonionic, Water-Soluble Surfactants That Stabilize CO2-in-Brine Foams
in SPE Journal
Yan C
(2014)
Properties of surfactant films in water-in-CO2 microemulsions obtained by small-angle neutron scattering
in Journal of Colloid and Interface Science
Yan C
(2016)
Shape Modification of Water-in-CO2 Microemulsion Droplets through Mixing of Hydrocarbon and Fluorocarbon Amphiphiles.
in Langmuir : the ACS journal of surfaces and colloids
Yan C
(2015)
Action of hydrotropes in water-in-CO2 microemulsions
in Colloids and Surfaces A: Physicochemical and Engineering Aspects
| Description | New surfactants were developed to enhance and control viscosity of supercritical CO2 |
| Exploitation Route | The results are being used to assess the designed thickeners by US DOE. The results are being used to assess the designed thickeners by US DOE |
| Sectors | Chemicals,Environment |
| Description | Concentrated emulsions as proxy CO2 thickeners |
| Amount | £2,000 (GBP) |
| Funding ID | RB1110012 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2008 |
| End | 09/2009 |
| Description | Dispersed lamellar phases in dense CO2 |
| Amount | £40,000 (GBP) |
| Funding ID | RB1210010 |
| Organisation | University of Oxford |
| Department | Oxford University Innovation |
| Sector | Private |
| Country | United Kingdom |
| Start | 10/2011 |
| End | 01/2012 |
| Description | Dispersed lamellar phases in dense CO2 |
| Amount | £40,000 (GBP) |
| Funding ID | RB1210010 |
| Organisation | University of Oxford |
| Department | Oxford University Innovation |
| Sector | Private |
| Country | United Kingdom |
| Start | 10/2011 |
| End | 01/2012 |
| Description | High internal phase emulsions in CO2 |
| Amount | £30,000 (GBP) |
| Funding ID | RB1110033 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2008 |
| End | 08/2009 |
| Description | Hyperbranched CO2-phillic surfactants |
| Amount | £30,000 (GBP) |
| Funding ID | RB1110019 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2008 |
| End | 08/2009 |
| Description | Mixing CO2-philc surfactants and hydrotropes as a new approach to control viscosity of CO2 |
| Amount | £1,000 (GBP) |
| Funding ID | RB1220028 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 02/2006 |
| End | 03/2012 |
| Description | New low surface energy materials |
| Amount | £255,655 (GBP) |
| Funding ID | EP/K020676/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 01/2013 |
| End | 12/2016 |
| Description | Optimizing surfactants for CO2 |
| Amount | £60,000 (GBP) |
| Funding ID | RB1110017 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2008 |
| End | 08/2009 |
| Description | Surfactant mixtures in CO2 |
| Amount | £10,000 (GBP) |
| Funding ID | RB1220032 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2011 |
| End | 01/2012 |
| Description | Thickeners for CO2 |
| Amount | £100,000 (GBP) |
| Funding ID | US-DOE NETL IAES 8.2.14 |
| Organisation | U.S. Department of Energy |
| Sector | Public |
| Country | United States |
| Start | 08/2008 |
| End | 01/2011 |
| Description | Thickeners for CO2 |
| Amount | £100,000 (GBP) |
| Funding ID | US-DOE NETL IAES 8.2.14 |
| Organisation | U.S. Department of Energy |
| Sector | Public |
| Country | United States |
| Start | 08/2008 |
| End | 01/2011 |