Ecole Nationale Supérieure des Techniques Avancées

 

_The Department
 

 

_Chemical Engineering

 

 

Faculty, Staff, Students


Dr Patrice Paricaud
Lecturer
Unité de Chimie et Procédés,
ENSTA,
828 boulevard des Maréchaux,
91 762 Palaiseaux Cedex (France).
Tel: (33)1 81 87 20 26
Fax: (33)1 81 87 20 29
E-mail:
patrice.paricaud@ensta-paristech.fr

CVTeachingResearch Publications/Conferences

CV

Lecturer at ENSTA (2004 - )
Postdoc, Vanderbilt University, Nashville, USA (2003-2004).
Dudley Newitt prize, Imperial College, London (2003).
PhD in Chemical Engineering, Imperial College, London (2003). Title: ''Understanding the Fluid Phase Behaviour of Polymer Systems with the SAFT Theory''.
BSc and MSc in Chemical Engineering, ENSIC, Nancy (1999).

Teaching

  • IN103: Introduction to Matlab. Course + project: simulation of the bioethanol production process
  • CB203: Introduction to Molecular Simulation: Monte-Carlo and Molecular Dynamics.
  • A5-1: Introduction to Molecular Thermodynamics.
  • B3-1: Modelling and Simulation of Batch Processes.
  • C4-2: The hydrogen network: industrial production of hydrogen (steam methane reforming, biomas anc coal gasification, alkaline and HT electrolysis, thermochemical cycles).
  • Orgonaiser of a week of visists of chemical plants.
  • Master International "Renewable Energy Science and Technology (REST)", Ecole Polytechnique, Palaiseau. The hydrogen network: production processes.

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Research

Key words: thermodynamics, condensed matter, polymers, phase equilibria, SAFT equations of state, COSMO-RS, molecular simulation, electrolytes and reactive systems.

My research focuses on the study of the thermodynamic behavior and physical properties of complex mixtures such as polymeric systems and electrolyte solutions, by using both equations of state and molecular simulation. Thermodynamics is essential to chemical engineering, and is particularly important in the design and optimisation of chemical processes. The study of phase equilibria is crucial for the design of multiphasic reactors and separation processes such distillation columns. Some applications of thermodynamics are the depollution of water, the extraction of a compound by supercritical fluid or the study of the stability of a colloidal solution.

Molecular simulation and theories developped from statistical mechanics have become very useful tools to predict physical macroscopic properties (resistance, viscosity, density, surface tension, solubilities and phase equilibria ...) from the knowledge of microscopic properties (intermolecular potentials). They are particularly useful when an experimental study would be difficult or impossible, and they enable to understand complex behaviors at the molecular scale. Molecular simulation is more and more used in the development of nanotechnologies, as it allows for the determination of the physical properties of synthetized molecules which cannot be found in nature.

PhD Thesis (click to zoom)

Here are my main research activities:

  • Modeling of vapor-liquid and liquid-liquid phase equilibria in polymer+solvent systems. Development of a model to predict the solubility of gases in semi-crystalline polymer, taking elastic effects into account.

In the design of a gas phase polymerization process, it is necessary to know the solubility of the monomers in the polymer grains, as this solubility directly determines the rate of the polymerization reaction and the remaining quantity of gas after the reaction. We have developped a model predicting the solubility of gas in polyethylene, based the SAFT equation and the statistical mechanics of chain elsaticity, which takes the plasticizing effects (due to the crystallites) into account.

  • Solubility of organic compounds in water/alcohol mixtures.

We are developing a group contribution method based on thermodynamic models (SAFT, ...) to predict the solubility of organic compounds in these mixtures. There are three main applications: food, pharmaceutical and environemental industries.

  • Liquid-liquid phase equilibria in polymer+colloid mixtures.
Effect of the polydispersity of chain length and colloid diameter.
  • Molecular simulation of aqueous solutions.

Development of polarizable force field for water and polar compounds.

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Publications

24) E. El Ahmar, A. Valtz, P. Paricaud, C. Coquelet, L. Abbas, W. Rached, Vapour-liquid equilibrium of binary systems containing entafluorochemicals from 363 to 413 K: Measurement and modelling with Peng-Robinson and three SAFT-like equations of states, Int. J. Refrig., 35, 2297-2310 (2013).

23) M. Nala, E. Auger, I. Gedik, Nicolas Ferrando, Moussa Dicko, Patrice Paricaud, et al., “Vapour–liquid equilibrium (VLE) for the systems furan + n-hexane and furan + toluene. Measurements, data treatment and modeling using molecular models”, Fluid Phase Equilib., 337, 234-245 (2013).

22) J. Janecek, P. Paricaud, “Influence of cyclic dimer formation on the phase behavior of carboxylic acids.”, J. Phys. Chem. B., 116, 7874-7882 (2012).

21) J. L. Li, P. Paricaud, “Application of the Conduct-like Screening Models for Real Solvent and Segment Activity Coefficient for the Predictions of Partition Coefficients and Vapor-Liquid and Liquid-Liquid Equilibria of Bio-oil-Related Mixtures “, Energy & Fuels, 26, 3756-3768 (2012).

20) Paricaud, “Modeling of the dissociation conditions of salt hydrates and gas semiclathrate hydrates. Application to lithium bromide, hydrogen iodide, and tetra-n-butylammonium bromide + carbon dioxide systems”, J. Phys. Chem. B, 115, 288-299 (2011).

19) J. Li, C. He, C. Peng, H. Liu, Y. Hu, P. Paricaud, “Modeling of the thermodynamic properties of aqueous ionic liquid solutions with an equation of state for square well chain fluid with variable range”, Ind. Eng. Chem. Res., 50, 7027- 7040 (2011).

18) D. Fan, J. Li, J. Shi, C. Peng, H. Liu, Y. Hu, P. Paricaud “Vapor-Liquid Equilibria in the n-Propyl Acetate + Acetic Acid Binary System from 323.15 to 353.15K: Measurement with a Static Method and Modeling with NRTL, Wilson, UNIQUAC and COSMO-SAC”, J. Chem. Eng. Data, 56, 1323-1329 (2011).

17) P. Paricaud, L. Tazi, J.M. Borgard, " Modeling the phase equilibria of the HIx mixture using the SAFT-VRE equation of state: binary systems " Int. J. Hydrogen Energy, 35, 978-991 (2010) pdf-preprint

16) X. Courtial, C.-B Soo, C. Coquelet, P. Paricaud, D. Ramjugernath and D. Richon, " Vapor–liquid equilibrium in the n-butane + methanol system, measurement and modeling from 323.2 to 443.2 K ", Fluid Phase Equilibr., 277, 152-161 (2009).

15) P. Paricaud, "Phase equilibria in polydisperse nonadditive hard-sphere systems", Phys. Rev. E., 78, 021202 (2008). pdf-preprint

14) V. Athès, P. Paricaud, M. Ellaite, I. Souchon, W. Fürst, "Vapour–liquid equilibria of aroma compounds in hydroalcoholic solutions: Measurements with a recirculation method and modelling with the NRTL and COSMO-SAC approaches", Fluid Phase Equilib., 265, 139-154 (2008).

13) P. Paricaud, A. Galindo, G. Jackson, "Examining the effect of chain length polydispersity on the phase behavior of polymer solutions with the statistical associating fluid theory (Wertheim TPT1) using discrete and continuous distributions", J. Chem. Phys., 127, 154906 (2007).

12) J. L. Rivera, F. W. Starr, P. Paricaud, and P. T. Cummings, "Polarizable contributions to the surface tension of liquid water", J. Chem. Phys., 125, 094712 (2006).

11) A.J. Haslam, N. von Solms, C. S. Adjiman, A. Galindo, G. Jackson, P. Paricaud, M. L. Michelsen, G.. M.. Kontogeorgis, "Predicting enhanced absorption of light gases in polyethylene using simplified PC-SAFT and SAFT-VR", Fluid Phase Equilib., 243, 74 (2006).

10) P. Paricaud, "A General Perturbation Approach for Equation of State Development: Applications to Simple Fluids, Ab initio Potentials and Fullerenes.", J. Chem. Phys., 124, 154505 (2006).
Additional material (GEMC simulation data)
.

9) P. Paricaud, M. Predota, A. A. Chialvo, P. T. Cummings, "From dimer to condensed phases at extreme conditions: Accurate predictions of the properties of water by a Gaussian charge polarizable model", J. Chem. Phys., 122, 244511 (2005).

8) A. Valtz, A. Chapoy, C. Coquelet, P. Paricaud, D. Richon, "Vapour–liquid equilibria in the carbon dioxide–water system, measurement and modelling from 278.2 to 318.2K", Fluid Phase Equilibria, 226, 333 (2004).

7) P. Paricaud, S. Varga, P. T. Cummings, G. Jackson, "Effect of polymer chain-length polydispersity on the phase behavior of model athermal mixtures of colloids and flexible self-excluding polymers", Chem. Phys. Lett., 398, 489 (2004).

6) P. Paricaud, A. Galindo, G. Jackson, "Modeling the Cloud Curves and the Solubility of Gases in Amorphous and Semicrystalline Polyethylene with the SAFT-VR Approach and Flory Theory of Crystallization", Ind. Eng. Chem. Res., 43, 6871 (2004).

5) P. Paricaud, A. Galindo, G. Jackson, "Understanding liquid–liquid immiscibility and LCST behaviour in polymer solutions with a Wertheim TPT1 description", Mol. Phys., 101, 2575 (2003).

4) B. H. Patel, P. Paricaud, A. Galindo, and G. C. Maitland, ''Prediction of the salting out effect of strong electrolytes on water + oil systems'', Ind. Eng. Chem. Res., 42, 3809 (2003).

3) P. Paricaud, S. Varga, and G. Jackson, ''Study of the demixing transition in model athermal mixtures of colloids and flexible self-excluding polymers using the thermodynamic perturbation theory of Wertheim '', J. Chem. Phys,.118, 8525 (2003).

2) P. Paricaud, A. Galindo, and G. Jackson, ''Recent advances in the use of the SAFT approach in describing electrolytes, interfaces, liquid crystals and polymers'', Fluid Phase Equilibria, 194, 87 (2002).

1) J. N. Jaubert, R. Solimando, P. Paricaud, and A. Barreau, ''Use of distribution functions: A useful tool to calculate the properties of condensate gases'', Ind. Eng. Chem. Res., 39, 5029 (2000).

 

Conferences: pdf file

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ENSTA ParisTech, 828 boulevard des Maréchaux, 91762 PALAISEAU Cedex (FRANCE). Tel : 01 81 87 19 90, Fax : 01 81 87 20 29
Directeur : Walter Fürst - Secrétariat : Olivier Pellion
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