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Advancing global decarbonization using Power-to-X
Advancing global decarbonization using Power-to-X
Global decarbonization efforts are shifting research focus to sustainable fuels in facilitating transition to reduce greenhouse gas emissions for a low-carbon future and limit global warning. In this regard, I find the intersection of fundamental science and applied research will be advantageous, as it allows for the exploration of novel materials that can address pressing global energy needs. Hence, my future research goals focus on design and development of suitable catalysts for facilitating sustainable fuel production to empower Power-to-X (PtX) technologies for global decarbonization. PtX technologies hold immense potential in generating naturally abundant molecules such as CO2, H2, N2, etc., which can be further utilized to produce green NH3, CH4, syngas (which can be converted to useful products such as kerosene blends for sustainable aviation fuels (SAF))
Figure 1: Utilization of abundant molecules produced from renewable resources to generate fuels such as CH4, kerosene (SAF), NH3, etc.
(diagram under preparation)
Previous Research Experience -
Figure 2: Rh enrichment in a Pt/Rh gauze wire treated under NH3 oxidation conditions for 100 h, visualized due to composition study using resonant X-ray tomography
Catalyst degradation during oxidation of NH3 to nitric acid (Ostwald Process)
Catalyst degradation during oxidation of NH3 to nitric acid (Ostwald Process)
Morphological and compositional study in industrial Pt/Rh gauzes used for NH3, oxidation process were performed
spatially-resolved chemical changes using ex situ resonant X-ray tomography methods around the Rh K-edge
revealing 3D elemental segregation and distribution within the gauze wires as a function of reaction time to develop an understanding of metal loss mechanism
S. Das et al. J Phys. Chem. C. 2024, 128, 5053-5063. doi.org/10.1021/acs.jpcc.4c00041.
Project Collaborators - KIT and TUHH (Germany)
Figure 3: (top) 2D X-ray nanoreactor - adapted MEMS-based commercial TEM setup for correlation in situ X-ray and electron microscopy.
(bottom) Morphological changes observed within Ag catalyst under oxidising reaction condition.
Ag catalysts used for industrial methanol to formaldehyde conversion
Ag catalysts used for industrial methanol to formaldehyde conversion
2D X-ray imaging of Ag catalysts during restructuring under methanol to formaldehyde conditions
using in situ coherent diffraction X-ray imaging at 10 keV and complementary post-mortem electron microscopy
assessment of catalyst restructuring and dynamic pore formation to understand the influence of temperature, time, and gas environment (even for inert gas system)
Adaptation of the in situ MEMS-based nanoreactor for in situ X-ray microscopy at synchrotron radiation sources (experiment validated at the DESY, Germany and MAX IV laboratory, Sweden)
S. Das et al. Catal. Sci. Technol. 2024, 14, 5885-5898. doi.org/10.1039/D4CY00770K
Project Collaborators - KIT, DESY (Germany), NTNU (Norway), MAX IV Laboratory (Sweden)
Figure 4: Chemical gradient study in dual-layer ammonia slip catalysts under operando conditions
Dual-layer ammonia slip catalysts used for emissions control
Dual-layer ammonia slip catalysts used for emissions control
3D spatially-resolved study of changes in chemical gradient within dual-layer washcoated ammonia slip catalysts, here used for catalytic converters
using operando spectrotomography around the Cu K edge
facilitated understanding structure-activity relationships for bifunctional catalysts for examination of the effect of different washcoat configurations under reaction conditions
S. Das et al. under preparation.
Project Collaborators - KIT
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