Research Interest

• Hydroprocessing of heavy crude oils, residues, and petroleum fractions
• Residue conversion by thermal processes (delayed coking and visbreaking)
• Viscosity reduction of heavy and extra heavy crude oils by aquathermolysis
• Residue and heavy oil conversion by fluid catalytic cracking (FCC)
• Preparation of novel catalytic support materials
• Catalyst preparation, physico-chemical characterisations and activity measurements
• Identification of catalytic sites and routes for catalyst deactivation
• Novel catalyst and process development

Work Experience

Awards and Honours

Patents

• Preparation method of slurry phase organic-inorganic fused hybrid catalysts use for residue
  hydroprocessing
  Ravindra Prajapati, Kirtika Kohli, Samir Kumar Maity and Madhukar O Garg
  US 2016/0288101 A1
• Catalyst for the hydrodesulfurization of Residua and Heavy Crudes
  Patricia Rayo Mayoral, Jorge Ancheyta Juárez, Mohan Singh, Jorge Ramírez Solís, Samir Kumar Maity and Fernando Alonso Martínez
  US 2011/0218097A1
• Catalyst for the first hydrodemetalization step in a hydroprocessing system with multiple reactors for the improvement of heavy and extra heavy crudes
  Mohan Singh, Jorge Ancheyta Juárez, Patricia Rayo Mayoral and Samir Kumar Maity
  US20100304963 A1
• Mild acidic catalyst for hydroprocessing of heavy crude oil and residue and its synthesis procedure
  Mohan Singh, Jorge Ancheyta Juárez, Zenaida Carolina Leyva Inzunza and Samir Kumar Maity
  US9387466 B2
• Carbon supported catalysts for demetalation of heavy crude oil and residue
  Samir Kumar Maity, Jorge Ancheyta Juárez, Fernando Alonso Martínez, Hidetsugu Fukuyama, Satoshi Terai and Masayuki Uchida
  US 20100224535 A1

Selected Publications

• Experimental methods for evaluation of hydrotreating catalyst
  S. K. Maity, G. Centeno, J. Ancheyta
  Chapter 5 in Experimental Methods for Evaluation of Hydrotreating Catalyst, edited by J. Ancheyta, John Wiley & Sons Ltd 2020 (ISBN 9781119517993)
• Coking propensity during hydroprocessing of vacuum residues, deasphalted oils and asphaltenes
  R Prajapati, K Kohli, S K Maity and M O Garg
  Fuel 2017, 203, 514-521
• Slurry-phase hydrocracking of residue with ultradispersed MoS₂ catalysts prepared by microemulsion methods
  R Prajapati, K Kohli and S K Maity
  Energy & Fuels 2017, 31, 3905-3912
• Evaluation of residue hydrotreating catalysts supported on mesoporousaluminas
  K Kohli, R Prajapati, S K Maity, M Sau and M O Garg
  Current Catalysis 2017, 3, 1-9
• Deactivation of hydrotreating catalyst by metals in resin and asphaltene parts of heavy oil and residues
  K Kohli, R Prajapati, S K Maity, M Sau and M O Garg
  Fuel 2016, 175,264-273
• Slurry phase hydrocracking of residue by phosphomolybdic and phosphotungstic acids
  R Prajapati, K Kohli, S K Maity and M O Garg
  J Pet Environ Biotechnol 2016, 7, 281
• Characterization of asphaltenic material obtained by treating of vacuum residue with different reactive molecules
  S K Maity, S Kumar, M Srivastava, A S Kharola, K K Maurya, S Konathala, A K Chatterjee, M O Garg
  Fuel 2015, 149, 8–14