Publications
331 results found
Lu L, Wang S, Muller EA, et al., 2013, Adsorption and separation of CO2/CH4 mixtures using nanoporous adsorbents by molecular simulation, Fluid Phase Equilibria, Vol: 362, Pages: 227-234, ISSN: 0378-3812
A grand canonical Monte Carlo-simulation (GCMC) study is presented focussing on the adsorption of CO2/CH4 mixtures in different nanopore models, including pristine mesoporous carbons, carbon foams, carbon nanotubes (CNTs), and nanopore models modified with hydrophilic carboxylic groups. We also report and discuss the selectivity of the different adsorbent surfaces under a wide range of temperature and pressure. Our results show that foam structures have the highest adsorption capacity of all the pristine structures studied because of its special architecture. The selectivity markedly enhanced after modification, especially at low pressures, and modified CNTs are found to have the highest selectivity among all the models tested. The effect of temperature and pressure is evaluated and the change in the selectivity trends of modified nanopore models are in contrast to that of the pristine models. The results suggest that the separation performance in carbon nanopores is greatly affected by the nature of the architecture and the heterogeneity of the materials. These findings could be beneficial in conventional pressure swing adsorption processes and the nanoporous structures could be used as parts of mixed polymer membranes. The results of this work present some guidelines for the designing nanoporous structures in order to achieve optimal separation of CO2/CH4 mixtures.
Long Y, Palmer JC, Coasne B, et al., 2013, On the molecular origin of high-pressure effects in nanoconfinement: The role of surface chemistry and roughness, JOURNAL OF CHEMICAL PHYSICS, Vol: 139, ISSN: 0021-9606
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- Citations: 58
Horton RM, Haslam AJ, Galindo A, et al., 2013, New methods for calculating the free energy of charged defects in solid electrolytes, JOURNAL OF PHYSICS-CONDENSED MATTER, Vol: 25, ISSN: 0953-8984
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- Citations: 2
Dominguez H, Haslam AJ, Jackson G, et al., 2013, Modelling and understanding of the vapour-liquid and liquid-liquid interfacial properties for the binary mixture of <i>n</i>-heptane and perfluoro-<i>n</i>-hexane, JOURNAL OF MOLECULAR LIQUIDS, Vol: 185, Pages: 36-43, ISSN: 0167-7322
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- Citations: 9
Brand CV, Rodriguez J, Galindo A, et al., 2013, Validation of a process model of CO2 capture in an aqueous solvent, using an implicit molecular based treatment of the reactions, Energy Procedia, Vol: 37, Pages: 1566-1571, ISSN: 1876-6102
A model of a desorber for the recovery of aqueous monoethanolamine (MEA) solvent following the separation of carbon dioxide (CO2) from flue gas from a fossil fuel power plant is presented. This model is derived from a previously developed absorber model, by using the same rate-based stage and physical property models. The novelty of this modeling framework lies in the integration into a rate-based process model of the state-of-the-art SAFT-VR thermodynamic model, in which the physical and chemical interactions are treated simultaneously, assuming that the chemical reactions are at equilibrium. Such an approach reduces the amount of experimental data needed to model the interactions of the solvent with CO2. The implicit treatment of the chemical reactions in this formalism obviates the need to incorporate an enhancement factor or to use experimental data for the rate of reaction. The gPROMS software is employed to implement the desorber model and pilot plant data are used for the validation, without adjusting any model parameters. Very good predictions are obtained over a wide range of operating conditions.
Wu L, Jackson G, Mueller EA, 2013, Liquid Crystal Phase Behaviour of Attractive Disc-Like Particles, INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, Vol: 14, Pages: 16414-16442, ISSN: 1661-6596
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- Citations: 10
Jackson G, 2013, "Electrokinetics: insights from simulation on the microscopic scale" - Benjamin Rotenberg & Ignacio Pagonabarraga, MOLECULAR PHYSICS, Vol: 111, Pages: 825-826, ISSN: 0026-8976
Avendano C, Lafitte T, Adjiman CS, et al., 2013, SAFT-γ Force Field for the Simulation of Molecular Fluids: 2. Coarse-Grained Models of Greenhouse Gases, Refrigerants, and Long Alkanes, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 117, Pages: 2717-2733, ISSN: 1520-6106
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- Citations: 116
Rahman S, Braga C, Lobanova O, et al., 2013, The importance of intra-and inter-molecular interactions in the development of coarse-grained models for chain fluids using SAFT-γ mie in molecular simulations, Pages: 1131-1132
Lobanova O, Herdes C, Jackson G, et al., 2013, Development of a coarse-grained force field for aqueous non-ionic surfactant systems using a molecular based equation of state, Pages: 1133-1135
Chremos A, Forte E, Papaioannou V, et al., 2013, Modelling the Fluid Phase Behaviour of Multifunctional Alkanolamines and Carbon Dioxide Using the SAFT-γ Approach, 16TH INTERNATIONAL CONFERENCE ON PROCESS INTEGRATION, MODELLING AND OPTIMISATION FOR ENERGY SAVING AND POLLUTION REDUCTION (PRES'13), Vol: 35, Pages: 427-432, ISSN: 1974-9791
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- Citations: 10
Llovell F, Mac Dowell N, Bias FJ, et al., 2012, Application of the SAFT-VR density functional theory to the prediction of the interfacial properties of mixtures of relevance to reservoir engineering, FLUID PHASE EQUILIBRIA, Vol: 336, Pages: 137-150, ISSN: 0378-3812
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- Citations: 58
Avaullee L, Adjiman CS, Calado F, et al., 2012, Gsaft: Application of the SAFT-γ mie group contribution EoS in the Oil/Gas Industry - From academic research to industrial deployment, AIChE 2012 - 2012 AIChE Annual Meeting, Conference Proceedings
SAFT-γ Mie is a new equation of state recently developed by the Molecular Systems Engineering group at Imperial College London. It is an advanced group-contribution form of the SAFT equation of state making use of the Mie potential for a more accurate and flexible description of the dispersive/repulsive interactions between segments. One of its key characteristics is the accurate description of vapour/liquid phase equilibria, including the region of the critical point, as well as the second-derivative thermodynamic properties such as the thermal expansivity, isothermal compressibility, heat capacity, Joule-Thomson coefficient, and speed of sound. In 2009, Process Systems Enterprise (PSE) acquired the exclusive intellectual property rights associated with SAFT-γ Mie and related work, for the purpose of incorporating these developments within its gSAFT advanced thermodynamics technology for process modelling. In late 2010, TOTAL, PSE and Imperial College embarked on a joint project aimed at exploring in detail the applicability, benefits and limitations of this technology on a wide range of mixtures of interest to the oil & gas industry. The current phase of the project is primarily focused on mixtures of hydrocarbons (alkanes and aromatics), carbon dioxide, water and methanol. The main output is a single, consistent set of group parameters capable of accurately describing the behaviour of these generic mixtures within the SAFT-γ Mie framework. Starting with a brief overview of the SAFT-γ Mie equation of state, this paper primarily focuses on the systematic methodology employed in developing the corresponding like and unlike group parameters. This comprises a sequence of steps including the choice of representative components and mixtures, the definition of an appropriate set of groups required to describe them, the collection of the necessary experimental data, a streamlined set of software tools and workflows employed for the accurate, ef
Malijevsky A, Jackson G, 2012, A perspective on the interfacial properties of nanoscopic liquid drops, JOURNAL OF PHYSICS-CONDENSED MATTER, Vol: 24, ISSN: 0953-8984
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- Citations: 83
Jover J, Haslam AJ, Galindo A, et al., 2012, Pseudo hard-sphere potential for use in continuous molecular-dynamics simulation of spherical and chain molecules, JOURNAL OF CHEMICAL PHYSICS, Vol: 137, ISSN: 0021-9606
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- Citations: 80
Horsch M, Hasse H, Shchekin AK, et al., 2012, Excess equimolar radius of liquid drops, PHYSICAL REVIEW E, Vol: 85, ISSN: 1539-3755
de Wijn AS, Riesco N, Jackson G, et al., 2012, Viscosity of liquid mixtures: The Vesovic-Wakeham method for chain molecules, JOURNAL OF CHEMICAL PHYSICS, Vol: 136, ISSN: 0021-9606
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- Citations: 27
Pereira FE, Jackson G, Galindo A, et al., 2012, The HELD algorithm for multicomponent, multiphase equilibrium calculations with generic equations of state, COMPUTERS & CHEMICAL ENGINEERING, Vol: 36, Pages: 99-118, ISSN: 0098-1354
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- Citations: 23
Lafitte T, Avendano C, Papaioannou V, et al., 2012, SAFT-gamma force field for the simulation of molecular fluids: 3. Coarse-grained models of benzene and hetero-group models of n-decylbenzene, MOLECULAR PHYSICS, Vol: 110, Pages: 1189-1203, ISSN: 0026-8976
Brand CV, Rodriguez J, Galindo A, et al., 2012, Validation of an absorber model of carbon dioxide capture in an aqueous amine solvent developed based on the SAFT-VR framework, 11TH INTERNATIONAL SYMPOSIUM ON PROCESS SYSTEMS ENGINEERING, PTS A AND B, Vol: 31, Pages: 930-934, ISSN: 1570-7946
Wu L, Wensink HH, Jackson G, et al., 2012, A generic equation of state for liquid crystalline phases of hard-oblate particles, MOLECULAR PHYSICS, Vol: 110, Pages: 1269-1288, ISSN: 0026-8976
Franco-Melgar M, Haslam AJ, Jackson G, 2012, A generalisation of the Onsager trial function approach: Describing nematic liquid crystals with an algebraic equation of state (vol 106, pg 649, 2008), MOLECULAR PHYSICS, Vol: 110, Pages: 3107-3107, ISSN: 0026-8976
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- Citations: 4
Jackson G, Economou IG, 2012, Thermodynamics 2011 Conference Athens, Greece, 31 August-3 September 2011 http://www.thermodynamics2011.org/ FOREWORD, MOLECULAR PHYSICS, Vol: 110, Pages: 1053-1056, ISSN: 0026-8976
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- Citations: 4
Dufal S, Galindo A, Jackson G, et al., 2012, Modelling the effect of methanol, glycol inhibitors and electrolytes on the equilibrium stability of hydrates with the SAFT-VR approach, MOLECULAR PHYSICS, Vol: 110, Pages: 1223-1240, ISSN: 0026-8976
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- Citations: 23
Rodriguez J, Mac Dowell N, Llovell F, et al., 2012, Modelling the fluid phase behaviour of aqueous mixtures of multifunctional alkanolamines and carbon dioxide using transferable parameters with the SAFT-VR approach, MOLECULAR PHYSICS, Vol: 110, Pages: 1325-1348, ISSN: 0026-8976
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- Citations: 77
Avendano C, Lafitte T, Galindo A, et al., 2011, SAFT-γ Force Field for the Simulation of Molecular Fluids. 1. A Single-Site Coarse Grained Model of Carbon Dioxide, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 115, Pages: 11154-11169, ISSN: 1520-6106
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- Citations: 178
Artola P-A, Pereira FE, Adjiman CS, et al., 2011, Understanding the fluid phase behaviour of crude oil: Asphaltene precipitation, FLUID PHASE EQUILIBRIA, Vol: 306, Pages: 129-136, ISSN: 0378-3812
Vega LF, Jackson G, 2011, 20 Years of the SAFT equation of state-Recent advances and challenges Symposium held in Bellaterra, Barcelona, 19-21 September 2010 Foreword, FLUID PHASE EQUILIBRIA, Vol: 306, Pages: 1-3, ISSN: 0378-3812
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- Citations: 18
Papaioannou V, Adjiman CS, Jackson G, et al., 2011, Simultaneous prediction of vapour-liquid and liquid-liquid equilibria (VLE and LLE) of aqueous mixtures with the SAFT-γ group contribution approach, FLUID PHASE EQUILIBRIA, Vol: 306, Pages: 82-96, ISSN: 0378-3812
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- Citations: 55
Mac Dowell N, Pereira FE, Llovell F, et al., 2011, Transferable SAFT-VR Models for the Calculation of the Fluid Phase Equilibria in Reactive Mixtures of Carbon Dioxide, Water, and <i>n</i>-Alkylamines in the Context of Carbon Capture, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 115, Pages: 8155-8168, ISSN: 1520-6106
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- Citations: 68
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