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Preparation and Application of the Bifunctional Pd/ZrHP Catalyst for Selective Hydrogenation of Phenol
Author NameAffiliationE-mail
WANG Zi-Xuan Department of Chemistry, Zhejiang University, Hangzhou 310028, China  
JIANG Yuan-Yuan Department of Chemistry, Zhejiang University, Hangzhou 310028, China  
ZHOU Ru-Ru Department of Chemistry, Zhejiang University, Hangzhou 310028, China  
CHEN Ping Department of Chemistry, Zhejiang University, Hangzhou 310028, China zyhou@zju.edu.cn 
HOU Zhao-Yin Department of Chemistry, Zhejiang University, Hangzhou 310028, China c224@zju.edu.cn 
Abstract: Hydrogenation of phenol to cyclohexanone is a vital step in the production of synthetic fiber (nylon). In this work, a layered-structured solid acid (zirconium hydrogen phosphate, ZrHP) supported Pd catalyst was synthesized in a microwave method. The structure and property of Pd/ZrHP catalyst were characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), nitrogen adsorption-desorption, X-ray photoelectron spectroscopy (XPS), and temperature-programmed desorption (TPD) technologies. It was found that Pd/ZrHP catalyst exhibited better performance than the Pd-based catalysts supported by traditional oxide (Al2O3, SiO2, MgO), molecular sieve (H-Beta), and active carbon (XC-72) under the mild condition (100℃, 1.0 MPa H2). The specific activity of the surface Pd atom in Pd/ZrHP reached 612.2 h-1, and it could be recycled five times without obvious deactivation. The synergistic effect between Pd metal and the acidic sites on ZrHP surface might be the main reason for the selective formation of cyclohexanone.
Keywords: phenol  cyclohexanone  hydrogenation  zirconium phosphate  Pd
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WANG Zi-Xuan,JIANG Yuan-Yuan,ZHOU Ru-Ru,CHEN Ping,HOU Zhao-Yin.Preparation and Application of the Bifunctional Pd/ZrHP Catalyst for Selective Hydrogenation of Phenol[J].Chinese Journal of Inorganic Chemistry,2022,38(5):812-820.
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Chinese Journal of Inorganic Chemistry