Lakhya

Dr. Lakhya Jyoti Konwar

Sr. Scientist

Academic Qualifications

Ph.D. in Heterogeneous catalysis: Åbo Akademi University & Tezpur University (2011-2016), M.Sc. in Chemistry: Gauhati University (2008-2010)

Contact Details

Dr. Lakhya Jyoti Konwar

Sr. Scientist

Google scholar; Orcid; LinkedIn  

lakhyak@csmcri.res.in

7100 / 2567760

  1. Kachgunde H.G., Mariyaselvakumar M., Konwar L.J.*, Biradar A.V.*, Melamine paraformaldehyde polymer as an excellent support for hydroformylations of various alkenes, Appl. Catal. A: Gen, 2025, 700, 120281 (IF.4.7)
  2. Dinh V., Gorza G., Samikannu A., Konwar L.J., Tesfalidet S., Sarmad S., Canu P., Mikkola J-P., Synergistic catalyst Ru/NbOPO4/TiO2 for selective hydrodeoxygenation of phenolics towards unlocking lignin's potential. Mol. Catal., 2025, Mol. Catal., 2025, 582, 115177 (IF.3.9)
  3. Kadam G.G., Nayak S.K., Samikannu A., Mikkola J-P, Konwar L.J.*, Environmentally benign and continuous 5-hydroxymethylfurfural (HMF) production from concentrated sugars over NbOPO4 supported TiO2 catalyst in a dimethyl carbonate-water biphasic system, Appl. Catal. A: Gen, 2025, 691, 120087 (IF.4.7)
  4. Mani M., Mariyaselvakumar M., Tothadi S., Panda A.B., Kannan S., Konwar L.J.*, Base free HMF oxidation over Ru-MnO2 catalysts revisited: Evidence of Mn leaching to Mn-FDCA complexation and its implications on catalyst performance, Mol. Catal., 2024, 554, 113811 (IF.4.6)
  5. Barik M., Patel B., Dabas S., Rathour P., Padariya D.S., Konwar L.J., Kumar A., Srivastava R., Subramanian P.S., Subramanian S., The resurgence of old material: The impact of boehmite-derived catalytic material on the formation of dihydropyran compounds and its application to access fragrant derivatives, Chem. Eng. J., 2024, 485, 149798 (IF:  15.1)
  6. Mariyaselvakumar M., Kadam G.G., Saha A., Samikannu A., Mikkola J-P, Ganguly B.*, Srinivasan K.*, Konwar L.J.*, Halogenated melamine formaldehyde polymers: Efficient, robust and cost-effective bifunctional catalyst for continuous production of cyclic carbonates via. CO2-epoxide cycloaddition, Appl. Catal. A: Gen, 2024, 675,119634 (IF:  5.5)
  7. Mani M. & Konwar L.J.*, Ru/N-doped activated carbon/NbOPO4 composites as an efficient bi-functional catalyst for direct hydrolytic hydrogenation of cellobiose to sorbitol, Biomass Convers. Biorefin., 2024, 14, 15823–15835. (Accepted 2023 https://doi.org/10.1007/s13399-022-03720-6) (IF. 4.103)
  8. Mariyaselvakumar M., Kadam G.G., Mani M., Kannan S., Konwar L.J.*, Direct hydrogenation of CO2-rich scrubbing solvents to formate/formic acid over heterogeneous Ru catalysts: A sustainable approach towards continuous integrated CCU, J. CO2 Util., 2023, 67, 102326. (IF. 8.321)
  9. Vaghela P., Trivedi K., Vijay K. G.A., Brahmbhatt H., Nayak J., Khandediya K., Prasad K., Denish K., Moradiya, Konwar L.J., Veeragurunathan V., P.G. Grace, Ghosh A., Scientific basis for the use of minimally processed homogenates of Kappaphycus alvarezii (red) and Sargassum wightii (brown) seaweeds as crop biostimulants, Algal Res., 2023, 70, 102969. (I.F. 5.014)
  10. Mani M., Mariyselvkumar M., Samikannu A., Panda A.B., Konwar L.J.*, Mikkola J-P, Continuous hydrocyclization of aqueous levulinic acid to γ-valerolactone over bi-functional Ru/NbOPO4/SBA-15 catalyst under mild conditions, Appl. Catal. A: Gen, 2022, 643, 118744. (IF. 5.706)
  11. Mani M., Kadam G. G, Konwar L.J.* Panda A.B., Selective hydrogenation of aqueous 5‑Hydroxymethylfurfural to 2,5-bis-(hydroxymethyl)furan over Ru supported mesoporous melamine polymers, Biomass Convers. Biorefin., 2024, 14, 6267–6284. (Accepted 2022 https://doi.org/10.1007/s13399-022-02768-8) (IF. 4.987)
  12. Konwar L.J.*, Mikkola J-P, Carbon support effects on metal (Pd, Pt and Ru) catalyzed hydrothermal decarboxylation/deoxygenation of triglycerides, Appl. Catal. A: Gen, 2022, 638, 2022, 118611 (IF. 5.706)
  13. #Samikannu A.*, #Konwar L.J.*, Rajendran K., Lee C.C., Shchukarev A., Virtanen P., Mikkola J-P, Highly dispersed NbOPO4/SBA-15 as a versatile acid catalyst upon production of renewable jet-fuel from bio-based furanics via hydroxyalkylation-alkylation (HAA) and hydrodeoxygenation (HDO) reactions, Appl. Catal. B: Environ., 272, 2020, 118987. (#equal contribution)  (I.F. 19.503)
  14. Konwar L.J.*, Oliani B., Samikannu A., Canu P., Mikkola J-P, Efficient hydrothermal deoxygenation of tall oil fatty acids into n-paraffinic hydrocarbons and alcohols in the presence of aqueous formic acid, Biomass Convers. Biorefin., 2022, 12, 51–62. (invited article) (IF. 4.987)
  15. T. Q. Bui*, L.J. Konwar*, A. Samikannu, D. Nikjoo, J-P. Mikkola*, Mesoporous melamine-formaldehyde resins as efficient heterogeneous catalyst for continuous synthesis of cyclic carbonates from epoxides and gaseous CO2, ACS Sustain. Chem. Eng., 2020, 8, 34, 12852–12869. (I.F. 8.198)
  16. Konwar L.J.*, Mäki-Arvela P., Mikkola J-P, SO3H containing functional carbon materials: synthesis, structure and acid catalysis, Chem. Rev.,, 2019, 119, 22, 11576-11630. (I.F. 60.62) (Review)
  17. #Konwar L.J.*, #Samikannu A., Mäki-Arvela P., Mikkola J-P, Renewable N-doped active carbons as efficient catalysts for direct synthesis of cyclic carbonates from epoxides and CO2, Appl. Catal. B: Environ., 241, 41-51. 2019 (#equal contribution). (I.F. 19.503)
  18. Konwar L.J.*, Samikannu A., Mäki-Arvela P., Mikkola J-P, Efficient C−C Coupling of Bio-based Furanics and Carbonyl Compounds to Liquid Hydrocarbon Precursors over Lignosulfonate Derived Acidic Carbocatalysts, Catal. Sci. Technol., 2018,8, 2449-2459. (I.F. 6.119)
  19. Konwar L.J.*, Samikannu A., Mäki-Arvela P., Boström D, Mikkola J-P, Lignosulfonate-based macro/mesoporous solid protonic acids for acetalization of glycerol to bio-additive, Appl. Catal. B: Environ., 220, 314-323. 2018.(I.F. 19.503)
  20. Aslam, Md., Konwar, L.J., Kothiyal N.C., Sarma, A.K., An investigation of catalytic hydrocracking of high FFA vegetable oils to liquid hydrocarbons using biomass derived heterogeneous catalysts, J. Anal. Appl. Pyrolysis., 115, 401–409, 2015. (I.F. 5.541)
  21. Konwar, L.J., Mäki-Arvela, P., Kumar, N., Sarma A.K., Mikkola, J-P., Deka, D. Selective esterification of fatty acids with glycerol to monoglycerides over –SO3H functionalized carbon catalysts, Reac Kinet Mech Cat., 119: 121–138, 2016. (I.F. 2.081)
  22. Konwar, L.J., Sugano, Y., Chutia, R.S., Mäki-Arvela, P., Kataki, R, Mikkola, J-P. Sustainable synthesis of N and P co-doped porous amorphous carbon using oil seed processing wastes, Mater. Lett., 173, 145–148, 2016. (I.F. 3.423)
  23. Konwar, L.J., Mäki-Arvela, P., Thakur, A.J., Kumar, N., Mikkola, J-P. Sulfonated carbon as a new, reusable heterogeneous catalyst for solvent free synthesis of acetone soluble cellulose acetate, RSC Adv., 6, 8829-8837, 2016. (I.F. 3.36)
  24. Konwar, L.J.*, Wärnå, J., Mäki-Arvela, P., Kumar, N., Mikkola, J-P*. Reaction kinetics with catalyst deactivation in simultaneous esterification and transesterification of acid oils to biodiesel (FAME) over a mesoporous sulphonated carbon catalyst, Fuel, 166, 1-11, 2016. (I.F. 6.609)
  25. Konwar, L.J., Mäki-Arvela P., Begum, P., Kumar, N., Thakur, A.J., Mikkola, J-P., Deka, R.C., Deka, D. Shape selectivity and acidity effects in glycerol acetylation with acetic anhydride: Selective synthesis of triacetin over Y-Zeolite and sulfonated mesoporous carbons, J. Catal., 329, 237-247, 2015. (I.F. 7.92)
  26. Konwar, L.J., Mäki-Arvela P., Salminen, E., Kumar, N, Thakur, A.J., Mikkola, J-P., Deka D. Towards carbon efficient biorefining: Multifunctional mesoporous solid acids obtained from biodiesel production wastes for biomass conversion, Appl. Catal. B: Environ., 2015, 176–177, 20–35, (I.F. 19.503)
  27. Konwar, L.J., Das, R., Thakur, A.J., Salminen, E., Mäki-Arvela, P., Kumar, N., Mikkola, J.P., Deka, D. Biodiesel production from acid oils using sulfonated carbon catalyst derived from oil-cake waste, J. Mol. Catal. A Chem., 388–389, 167-176, 2014. (I.F. 3.83)
  28. Konwar, L.J.*, Boro, J., Deka, D. Review on latest developments in biodiesel production using carbon-based catalysts, Renew. Sust. Energ. Rev., 29, 546–564, 2014. (I.F. 14.98) (Review)
  29. Boro, J., Konwar, L.J., Thakur, A.J., Deka, D. Ba doped CaO derived from waste shells of T. Striatula (TS-CaO) as heterogeneous catalyst for biodiesel production, Fuel, 129, 182–187, 2014. (I.F. 6.609)
  30. *Boro, J., *Konwar, L.J., Deka, D. Transesterification of non-edible feedstock with lithium incorporated egg shell derived CaO as heterogeneous base catalyst for biodiesel production, Fuel Process. Technol., 122, 72-78, 2014. (*equal contribution) (I.F. 7.033)
  31. Boro, J., Konwar, L.J., Deka, D. Vigna radiata (mung bean) ash as heterogeneous base catalyst for biodiesel production, J. Bioprocess Eng. Biorefinery, 2, 54–60, 2013. (I.F. NA)
  32. Konwar, L.J., Boro, J., Deka, D. Activated Carbon Supported CaO from Waste Shells as a Catalyst for Biodiesel Production, Energy Sources A: Recovery Util. Environ. Eff., 2018, 601-607. (I.F. 3.447)
  33. P. Bora, L.J. Konwar, D. Deka, Microemulsion based hybrid biofuels using glycerol monooleate, Energy Convers. Manag., 117 (1), 185–192, 2016. (I.F. 9.709)
  34. Bora, P., Boro, J., Konwar, L.J. & Deka, D. Formulation of microemulsion based hybrid biofuel from waste cooking oil-a comparative study with biodiesel, J. Energy Inst., 89(4), 2016, 560-568. (I.F. 6.186)
  35. Kumar, H, Konwar, LJ., Aslam, M, Sarma, AK. Performance, combustion and emission characteristics of a direct injection VCR CI engine using a Jatropha curcas oil microemulsion: a comparative assessment with JCO B100, JCO B20 and Petrodiesel, RSC Adv., 6 (44), 37646-37655, 2016. (I.F. 3.36)
  36. Bora, P., Konwar, L.J., Phukan, M.M., Deka, D., Konwar, B.K. Microemulsion based hybrid biofuels from Thevetia peruviana seed oil: structural and dynamic investigations, Fuel, 157 (1), 208–218, 2015. (I.F. 6.609)
  37. *#Bora, P., *#Konwar, L.J., Boro, J., Phukan, M.M., Deka, D., Konwar, B.K. Microemulsion based hybrid biofuels from non-edible oils: a comparative standpoint with corresponding biodiesel, Appl. Energy, 135(15) (2014), 450–460. (#equal contribution) (I.F. 9.746)
  38. Bora, P., Boro, J., Konwar, L.J. & Deka, D. A comparative study of Mesua ferrea L. Based hybrid fuel with diesel fuel and biodiesel, Energy Sources A: Recovery Util. Environ. Eff., 38:9, 1279-1285, 2016. (I.F. 3.447)
  39. Konwar, L.J., Chutia, R.S., Boro, J., Kataki, R., Deka, D., Biochar supported CaO as heterogeneous catalyst for biodiesel production, Int. J. Innov. Res. Dev., 1(7), 186-195, 2012. (I.F. NA)
  40. J. Kaur, L.J. Konwar, M.K. Jha, A.K. Sarma. Downstream processing of crude glycerol into useful products and chemicals, Journal of Biofuels and Bioenergy, 1 (1), 21-27, 2015. (I.F. NA)
  41. Boro, J., Konwar, L.J., Das, S., Deka, D. Comparative study of CaO derived from waste shells of Turbonilla Striatula and commercial CaO for biodiesel synthesis, Journal of Assam Science Society, 52(2), 120-122, 2011. (I.F. NA)

 


  1. A process for the preparation of L-rhamnose and 5-methylfurfural from green seaweed ulva and a catalyst therefor, Pt. Appl. IN. 202511001318 (CSIR Ref. 0276NF2024) (Konwar L.J., Nayak S.K., Sundarraj D.K., Subramanian P.S., Veeragurunathan V.)
  2. Catalysts for selective 5-hydroxymethylfurfural production from carbohydrates and method for preparation thereof, Pt. Appl. IN. 202311074006 (CSIR Ref: 0136NF2023) (Konwar L.J., Kadam G.G.)
  3. Hydrothermal method for producing renewable paraffinic hydrocarbons, WO2020039031A1, EP3841186A1, EP3841186B1 EP19758399.0 (granted European patent), E14354002, 2019. (Mikkola J-P, Klint, K-V, Konwar L.J., Siljebo W., Samikannu A.)
  4. Process for continious hydrogenation of aqueous levulinic acid to γ-valerolactone and its tandem conversion to high octane gasoline range hydrocarbons, SE 2350094-5, SE546822 (granted Swedish patent) (Mikkola J-P, Samikannu A., Konwar L.J., Klint, K-V, Siljebo W.)

  1. Konwar, L.J., Kataki, R, Mikkola, J-P, Bordoloi, N, Saikia, R, & Chutia, R.S. Side-streams from bioenergy and biorefinery complexes as a resource for circular bio-economy, (Chapter 3) In Waste Biorefinery: Potential and Perspectives (Paperback ISBN: 9780444639929), 2018, Eds: A. Pandey, T. Bhaskar S.V. Mohan, D-J. Lee, S.K. Khanal. Elsevier.

Heterogeneous catalysis, catalytic utilization of circular feedstock’s (biomass including marine biomass, biomolecules and CO2), R & D activities also include investigation of reaction kinetics, surface mechanisms and catalyst deactivation as well as intensification using flow chemistry. Main motivation is to develop novel solid catalysts to address various process challenges associated with the conversion of circular feedstock’s (such as high catalyst cost, low activity/selectivity, low stability/fast deactivation) to enable efficient utilization of such resources/feedstocks under industrial setting.

Heterogeneous catalysis, catalyst characterization, chemisorption techniques, high pressure and high temperature catalysis, process intensification (batch to flow), biomass conversion and biofuels