Interfacially modified Si–Pd/carbon catalyst for selective pulegone (CC bond) hydrogenation to menthone-isomenthone

Prashant Kumar Thakur; Priyabrat Mohapatra; Chandan Singh Chanotiya; Bhavana R. Shivankar; Andrew Hung; Ylias Sabri; Prasant Kumar Rout

doi:10.1039/D5CC06835E

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Interfacially modified Si–Pd/carbon catalyst for selective pulegone (CC bond) hydrogenation to menthone-isomenthone

Prashant Kumar Thakur,

^abc Priyabrat Mohapatra,

^d Chandan Singh Chanotiya,

^ab Bhavana R. Shivankar,^be Andrew Hung,^e Ylias Sabri

*^c and Prasant Kumar Rout

*^ab

Author affiliations

* Corresponding authors

^a Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, India
E-mail: pkrout.cimap@csir.res.in

^b Academy of Scientific and Innovative Research (AcSIR), New Delhi-110025, India

^c Department of Chemical and Environmental Engineering, RMIT University, Melbourne, Victoria 3001, Australia

^d Department of Chemistry, Krupajal Engineering College, Bhubaneswar, Odisha 751002, India

^e School of Science, STEM College, RMIT University, Melbourne, Victoria 3001, Australia

Abstract

Chemoselective pulegone hydrogenation over Si–Pd/C affords 97.6% menthone-isomenthone yield at low H₂ pressure (10 psi), driven by Si–Pd interfacial synergism. The catalyst maintains >96% activity after five consecutive cycles, providing robust, industrially compatible strategy for DMO (dementholized oil) detoxification and precise monoterpenoid (pulegone) conversion to high value products.

This article is part of the themed collection: ChemComm Nanocatalysis

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DOI: https://doi.org/10.1039/D5CC06835E
Article type: Communication
Submitted: 10 Dec 2025
Accepted: 27 Feb 2026
First published: 03 Mar 2026

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Chem. Commun., 2026, Advance Article

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Interfacially modified Si–Pd/carbon catalyst for selective pulegone (CC bond) hydrogenation to menthone-isomenthone

P. K. Thakur, P. Mohapatra, C. S. Chanotiya, B. R. Shivankar, A. Hung, Y. Sabri and P. K. Rout, Chem. Commun., 2026, Advance Article , DOI: 10.1039/D5CC06835E

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Interfacially modified Si–Pd/carbon catalyst for selective pulegone (CC bond) hydrogenation to menthone-isomenthone

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Interfacially modified Si–Pd/carbon catalyst for selective pulegone (CC bond) hydrogenation to menthone-isomenthone

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