Raja  Thirumalaiswamy

Thirumalaiswamy Dr. R.

Principal Scientist : Catalysis And Inorganic Chemistry

Dr. Thirumalaiswamy's Home Page
+91-20-25902006
+91-20-25902633


MY AREAS OF EXPERTISE
Biofuels, Catalysis, Chemical and Reactor Engineering, Materials Chemistry

MY RESEARCH INTERESTS
 

Reforming

Aqueous phase reforming (APR) of renewable oxygenates, of biomass origin, to get H2 was carried out. A series of highly stable Ru supported catalysts with controlled metal nanoparticle sizes have been prepared and used for APR of glycerol to produce H2. Nitrogen-doped mesoporous carbons (NMCs) were utilized as supports and found to have a strong influence on the catalytic performance of the catalysts. Notably, the catalyst (5 wt% Ru-NMC-3) with optimal N content (10.9 wt%) demonstrated improved stability and H2 selectivity, which are better than the many states of the art catalysts. Nitrogen in the carbon framework has a dual relationship with the activity of the catalyst; (i) it creates a primary environment over the catalysts support and (ii) it acts as an anchoring site for metal nanoparticles. Anchoring of metal nanoparticles has helped to curb their sintering, thus leading to better stability of the catalysts under APR reaction conditions. Various characterization techniques were employed to understand the nature of active catalytic sites responsible for higher H2 production while minimizing CO formation. In-situ CO-FTIR studies showed that the higher catalytic activity of 5wt% Ru-NMC-3 catalyst was attributed to enhanced WGS activity over this catalyst. Density functional theory (DFT) calculations were performed to understand the stabilization of metal nanoparticles by different types of N present on the support and provide insights into the preferred sites of glycerol adsorption on NMC support. Since 5wt% Ru-NMC-3 was the relatively best catalyst, it was selected for the preparation of bimetallic catalysts. Accordingly addition of Pt to this system helped to increase the stability of the catalyst. This bimetallic catalyst may, therefore, find application for extensive use in APR of biomass oxygenates.

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ACADEMIC QUALIFICATION
 
JSPS-Post doctoral fellow Heterogeneous Catalysis ,  (2002)
Faculty Of Engineering,Dept.Of Materials Science And Technology, Gifu-University, Japan

Post doctoral fellow Zeolite , Mesoporous Materials And Catalysis,  (2000)
Laboratoire De Matériaux Catalytiques Et Catalyse, Umr 5618, Enscm, Montpellier, France

PROFESSIONAL EXPERIENCE
 
JSPS –Japan Society for the Promotion of ScienceGifu
Post Doctoral Fellow
2001-Present

PUBLICATIONS
 
Role of Nanointerfaces in Cu- and Cu plus Au-Based Near-Ambient-Temperature CO Oxidation Catalysts
ChemCatChem  (2014)
Raja T., Gnanakumar, ES, Gopinath, CS, Manikandan, M, Naik, JM

Phase Transfer Ceria-Supported Nanocatalyst for Nitrile Hydration Reaction
ACS National Meeting Book of Abstracts  (2019)
Nikitra N. Gupta*, Raja T.

Note:   # For First Author, * For Corresponding Author
AWARDS & HONORS
 
NCL- Research Foundation Cipla Hamied - Award for the best process of the year 2019 2019

NCL- Research Foundation Award on technology development, commercialization and process development 2017

RESEARCH GROUP

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