An efficient noble-metal-free supported copper catalyst for selective nitrocyclohexane hydrogenation to cyclohexanone
Qian-Qian Zhang1, Jing Dong2, Yong-Mei Liu1
1Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China. ymliu@fudan.edu.cn.
Chemical Communications (Cambridge, England)
|February 22, 2017
Summary
Researchers developed a novel method for selectively producing cyclohexanone oxime (CHO) from nitrocyclohexane (NC) using copper catalysts. This heterogeneous catalysis offers a unique and efficient pathway for CHO synthesis.
Area of Science:
- Catalysis
- Organic Chemistry
- Materials Science
Background:
- Nitrocyclohexane (NC) is a precursor that can be transformed into valuable chemical intermediates.
- Selective synthesis of cyclohexanone oxime (CHO) is crucial for various industrial applications.
- Heterogeneous catalysis offers advantages in terms of separation and reusability.
Purpose of the Study:
- To investigate the selective production of cyclohexanone oxime (CHO) via the hydrogenative transformation of nitrocyclohexane (NC).
- To explore the role of copper catalysts and support interactions in this transformation.
Main Methods:
- Utilizing heterogeneous copper catalysts (Cu 0 and Cu + ) supported on weakly acidic SiO 2 .
- Performing the hydrogenation of nitrocyclohexane (NC) under specific reaction conditions.
- Analyzing the catalytic activity and selectivity towards cyclohexanone oxime (CHO).
Main Results:
- Demonstrated the first-time selective production of cyclohexanone oxime (CHO) from nitrocyclohexane (NC).
- Observed unique and highly selective catalysis attributed to the cooperative interaction between Cu 0 /Cu + and SiO 2 support.
- Achieved efficient hydrogenation of NC to CHO.
Conclusions:
- Heterogeneous copper catalysis, particularly the combination of Cu 0 and Cu + with SiO 2 , provides an effective route for selective CHO synthesis.
- The synergistic effect between the copper species and the acidic support is key to the observed selectivity.
- This method presents a promising alternative for the industrial production of cyclohexanone oxime.
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