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Highly Efficient Liquid-Phase Hydrogenation of Naringin Using a Recyclable Pd/C Catalyst
Jiamin Zhao1, Ying Yuan2, Xiuhong Meng3
1Department of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China. zhaojiamin08031223@163.com.
Materials (Basel, Switzerland)
|December 28, 2018
Summary
This study optimized naringin to dihydrochalcone hydrogenation using a palladium on carbon (Pd/C) catalyst. Water proved the best solvent, preventing catalyst deactivation by sodium hydroxide (NaOH).
Area of Science:
- Chemical Engineering
- Catalysis
- Organic Chemistry
Background:
- Naringin, a flavonoid, can be converted to dihydrochalcones.
- Efficient catalytic methods are needed for this transformation.
- Palladium on carbon (Pd/C) is a common hydrogenation catalyst.
Purpose of the Study:
- To develop an efficient liquid-phase hydrogenation for naringin conversion.
- To investigate the impact of solvents and additives on catalyst performance.
- To understand catalyst deactivation mechanisms.
Main Methods:
- Liquid-phase hydrogenation of naringin using a recyclable Pd/C catalyst.
- Screening of various solvents to identify optimal reaction conditions.
- Analysis of catalyst surface and solution composition.
Main Results:
- Water was identified as the optimal solvent for the hydrogenation reaction.
- Sodium hydroxide (NaOH) accumulation on the Pd/C surface inactivated the catalyst in alcoholic solvents.
- NaOH remained soluble in water, preserving catalyst activity and stability.
Conclusions:
- Water is a superior solvent for naringin hydrogenation with Pd/C catalysts.
- Understanding solvent effects is crucial for preventing catalyst deactivation.
- This method offers a stable and recyclable approach for dihydrochalcone synthesis.
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