Preparation of Phosphoric Acid-functionalized Pd/C Catalyst by Coordination Reduction and Its Application

doi:10.7503/cjcu20170092

Abstract

Abstract:

We presented a one-step reduction approach to the synthesis of highly dispersed and ultrafine phosphonate functionalized Pd nanoparticles supported by carbon(Pd/C) using XC-72 as the catalyst support, ethylenediamine tetramethylene phosphonic acid(EDTMPA) as both coordination agent and stabilizer, palladium chloride(PdCl₂) as the precursor and sodium borohydride(NaBH₄) as the reducing agent, respectively. Transmission electron microscopy(TEM) and X-ray diffraction(XRD) analysis results indicated that the average particle size and the dispersion degree in the Pd/C catalysts are 2.7 nm and 37.1%, respectively, much higher than those of the commercial catalysts. The activation energy of catalytic hydrogenation for rhodamine(RhB) and p-nitrophenol(4-NP) for the obtained catalyst are calculated to be 27.1 and 16.9 kJ/mol, respectively, obviously lower than those in the commercial Pd/C catalyst(57.2 and 55.7 kJ/mol).

Key words: Pd/C catalyst, Ethylenediamine tetramethylene phosphonic acid(EDTMPA), Complex, Catalytic degradation

CLC Number:

O643

TrendMD:

YAN Xiaohong, GE Xia, ZHANG Lin, QI Lijuan, LIU Yang, WEI Shaohua, ZHU Xiaoshu, TANG Yawen. Preparation of Phosphoric Acid-functionalized Pd/C Catalyst by Coordination Reduction and Its Application[J]. Chem. J. Chinese Universities, 2017, 38(9): 1619.

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