Anubhi Semwal

PhD Candidate
Employed since: 01-15-2026
Phone: +31684314298
Email: a.semwal@uu.nl
Room: DDW 4th floor open office

Research

Research

Operando Raman spectroscopy is a viable, but not commonly explored technique to measure the local temperature of a catalyst within a chemical reactor. Although Raman spectroscopy could enable such measurements, aspects associated with changing optical and physicochemical catalyst properties, as well as geometric aspects of the measurement setup complicate its implementation for complex, multicomponent powders and catalyst bodies. In this project, we develop a robust methodology based on operando Raman thermometry for R&D applications. This will be accomplished by exploring its potential for three showcases, namely cobalt-based Fischer-Tropsch synthesis, silver-based ethylene oxidation, and chromium-based alkane dehydrogenation as examples of exothermic and endothermic reactions. By using reducible (e.g., TiO2 and CeO2) and non-reducible (e.g., SiO2 and Al2O3) supports with different chemical and phase purity, we study the suitability of the intensities, positions, and widths of the Raman lines – or a combination thereof – of the metals (oxides) and supports to investigate its applicability, viablility, local temperature gradients, hotspots as well as potential temperature oscillations.

CV

CV

2026-Present,

Ph.D. Candidate,

Inorganic Chemistry & Catalysis, Utrecht University

 

2024-2026,

Project Associate,

CSIR-Indian Institute of Petroleum, Uttarakhand, India

 

2022-2024,

M.Sc. Chemistry (Gold Medalist),

Doon University, Uttarakhand, India

 

2019-2022,

B.Sc. Honors (Chemistry),

Doon University, Uttarakhand, India