- Chemical Thermodynamics and Phase Equilibria of pure and multi component liquid mixtures.
- Synthesis, purification, thermophysical properties study and mutual solubilities study of novel solvents (Ionic Liquids) and their mixtures with organic solvents.
- Development of Group Contribution Methods, QSPR, and Correlating Equations for the prediction of Thermophysical properties of pure liquids and their mixtures.
(1) (PI) Project Title: “Thermodynamic studies of ionic interactions in pure ionic liquids and their mixtures with organic solvents”
Funding Agency: IIT Madras (New Faculty Scheme) Amount: Rs. 19.0 Lakhs
Duration: 2 years (Oct. 2010 – Oct. 2012)
(2) (PI) Project Title: “Thermodynamic studies of model electrolyte and non-electrolyte solutes in “protic ionic liquids” and their mixtures with the parent Brönsted acids and bases”
Funding Agency: CSIR, India Amount: Rs. 20.8 Lakhs
Duration: 3 years (Jan 2012 – Dec 2014)
(3) (PI) Project Title: “High Temperature and High Pressure Thermodynamic Properties of Energetic Nitrogen-rich Ionic Liquids and their Mixtures with Organic Solvents”
Funding Agency: DST (Fast Track Proposals for Young Scientists), India
Duration: 3 years (June 2012 – May 2015) Amount: Rs. 29.16 Lakhs
(4) (Co-PI) Project Title: “Solar absorption refrigeration systems operating with Ionic Liquids as absorbents and ammonia as refrigerant”
Funding Agency: Indo-Spanish Research Cooperation: DST (India) – MICINN (Spain)
Duration: 3 years (May 2012 – April 2015) Amount: Rs. 49.0 Lakhs
(5) (PI) Project Title: “Experimental measurements and prediction of thermo physical and electrochemical properties of ionic liquids useful for metal ions separation”
Funding Agency: UGC-DAE CSR, Kalpakkam Node, Tamilnadu. Amount: Rs. 7.0 Lakhs
Duration: 2 years (December 2012 – November 2015)
(6) (Co-PI) Consultancy Project: “Development of differentiated Gel Ink that can deliver better writing smoothness with controlled Ink flow than existing Gel Inks”
Funding Agency: ITC Limited. Amount: Rs. 31.9 Lakhs
Duration: 2 years (June 2012 – May 2014)
(7) (Co-PI) Consultancy Project: “Enhanced Oil Recovery Using Environment Friendly Ionic Liquids”
Funding Agency: Oil India Limited. Amount: Rs. 38.61 Lakhs
Duration: 2 years (January 2013 – December 2014)
(8) (Co-PI) Project Title: “Synthesis, Fabrication and Performance Evaluation of Dye Sensitized Solar Cell (DSSC) with ionic liquid as Electrolyte and carbon Rich, Fractal type Molecular Assembly as Photon Absorbing Species: A Novel Approach to Enhance the Efficiency of DSSC”
Funding Agency: DST (SERI) Amount: Rs. 407.5 Lakhs
Duration: 3 years (November 2013 – November 2016)
Highlights of Research Contributions :
During last 16 years (4 years pre-PhD + 12 years post-PhD), I have gained considerable experience in the field of solution thermodynamics, fluid phase equilibria, measuring and predicting of physico-chemical properties, structure-property relations and physical chemistry of ionic liquids.
- Thermodynamic and transport properties of several pure liquids and liquid mixtures of non-electrolyte compounds have been measured. Experimental data were used to get the insight into intermolecular forces and microscopic structure of liquids, which are also useful in the process and product design calculations involving separations, heat transfer, mass transfer, and fluid flow.
- The Flory statistical theory and the ERAS (Extended Real Associated Solution) model were applied to estimate and interpret the volumetric properties of binary and ternary liquid mixtures.
- Contributed in building high pressure measurement set-up for the density measurement as a function of temperature and pressure (J. Chem. Eng. Data 52 (2007) 737-751).
- Earliest and timely study made on the high pressures density measurements for the series of ionic liquids in wide ranges of pressure and temperature and explained about the isothermal compressibility, isobaric expansivity and thermal pressure coefficient of ionic liquids. First paper of series of 5 papers on this work was published in J. Chem. Eng. Data in 2007 has been received more than 300 citations.
- A new model was developed based on a QSPR approach for describing the densities in wide ranges of pressures and temperatures (Fluid Phase Equilib. 263 (2008) 26-32, Citations: 200+). This model is now widely known and cited as “Gardas and Coutinho Model”.
- A number of other properties were also modelled with success such as viscosity, surface tension, speed of sound, heat capacity and parachor and papers on these subjects have been published in various journals with a success that can be measured by the number of citations these works achieved.
- The mutual solubilities of water/organic liquid and ionic liquids have been studied, and with partition coefficients, in particular developing a new approach to the measurements of octanol-water partition coefficients that can produce, not only this most relevant information for the environmental fate of ionic liquids, but also relevant information on their ionization in organic solvents.