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- Title
Selective O-Methylation of Phenol with Dimethyl Carbonate over Catalysts Supported on CaO.
- Authors
Zhang, Zhifang; Xu, Zhongying; Li, Shaoying; Chen, Shijun; Tang, Ying
- Abstract
In this work CaO-based catalysts were found to be efficient heterogeneous catalysts for the methylation of phenol with dimethyl carbonate (DMC) in a closed high pressure reactor. The optimization experiments have been carried out to obtain best phenol conversion and the results showed that CaO catalyst modified with KCl had the best catalytic performance. When the reaction was carried out at 200°C, with phenol to dimethyl carbonate molar ratio of 1 : 2, 15% KCl/CaO catalyst dosage of 3%, reaction time 9 h, 100% conversion of phenol and 95% selectivity towards anisole have been achieved. The structure and properties of the materials were thoroughly characterized by Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET). The close correlation was found between surface basicity of the catalysts and their catalytic performance for phenol conversion and anisole selectivity.
- Subjects
CATALYST supports; PHENOL; ETHANES; INFRARED spectroscopy; HETEROGENEOUS catalysts
- Publication
Kinetics & Catalysis, 2021, Vol 62, Issue 4, p496
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158421040145