Prof. Ankur Jain
Suresh Gyan Vihar University, India
Title: Catalytic Tuning of Hydrides using Perovskite type oxide Materials
Abstract:
The world is moving towards a hydrogen-based
economy; large-scale realization has been made possible by developing
solid-state hydrogen storage. Magnesium hydride (MgH2) exhibits
superior hydrogen storage properties but has certain flaws like sluggish
kinetics and high thermodynamic stability. Numerous investigations have
demonstrated that doping with appropriate catalysts is an effective technique
for enhancing the sorption kinetics1. This talk focuses on the
sorption behavior of MgH2 catalyzed with perovskite structured Nb-based
bimetallic oxide as NaNbO3 and KNbO3 with different concentrations2.
The apparent activation energy for dehydrogenation can significantly be reduced
for catalyzed MgH2 i.e. more than 50% decrement in the kinetic
barrier is rather a remarkable result. The catalyzed MgH2 starts
affecting the rate of absorption even at room temperature whereas milled MgH2 absorbs a little amount throughout the experiment. The catalytic mechanism
reveals the synergistic effect between alkali metal (Na, K) and Nb in addition
to explaining the high valent state of Nb creates a multielement environment that
improves the sorption kinetics.
References:
1. Recent
advances in designing metal oxide-based catalysts to enhance the sorption
kinetics of magnesium hydride, B Rathi, S Agarwal, K Shrivastava, M Kumar, A
Jain, International Journal of Hydrogen Energy 2024, 53, 131-162.
2. An
insight into the catalytic mechanism of perovskite ternary oxide for enhancing
the hydrogen sorption kinetics of MgH2, B Rathi, S Agarwal, K
Shrivastava, H Miyaoka, T Ichikawa, M Kumar, A Jain, Journal of Alloys &
Compounds 2024, 970, 172616
Biography:
Professor (Dr.) Ankur Jain is currently heading the Centre for Renewable Energy & Storage, Suresh Gyan Vihar University, Jaipur, India. He is also associated with Hiroshima University, Japan as visiting Professor. He obtained his Ph.D. in 2007 from University of Rajasthan-Jaipur, India. He has 15 years of teaching / research experience at various Universities including University of Rajasthan, Jaipur (2007-2011), Hiroshima University, Japan (2011-2020). His research interest focuses on the development of energy storage materials with a particular attention on Hydrogen Energy, Ammonia, and anode/electrolytes material for all solid-state Li-ion battery. He has published more than 100 research papers in reputed Journals and authored more than 15 books/book chapters. He has delivered more than 30 invited lectures/talks at various platforms. He has been recipient of several prestigious fellowships and awards including ICTP-TRIL fellowship, Italy; Dr. D.S. Kothari Postdoctoral Fellow, UGC, India; Young Scientist Award, DST, India; Visiting Scientist Award under Indo-Swiss Joint research programme; JSPS-Postdoctoral fellowship, Japan; Young Scientist Award from young division of International Association of Hydrogen Energy, Canada; DST-INSPIRE Award, India.