Pd supported on N-doped-ordered mesoporous carbons’ catalysts for selective hydrodechlorination of 4-chlorophenol
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Pd catalysts supported on N-doped-ordered mesoporous carbons (NOMC) have been prepared and tested for selective hydrogenation of 4-chlorophenol (4-CP) with H2. The difference from the previous methods is that the NOMC was synthesized using urea as nitrogen source via one-pot route. The rate constant of Pd/NOMC for hydrodechlorination of 4-CP was about 135.9 h−1 which were higher than Pd/OMC (65.6 h−1) and Pd/AC (20.8 h−1). It could be attributed to the synergetic effects of mesoporous structure, N-doped supports, and the stabilized small PdNPs. The conversion changed from 100 to 90.2% after the sixth reaction using Pd/NOMC which could be caused by the palladium leaching.
KeywordsMesoporous carbon N-doped Pd 4-chlorophenol Hydrogenation
N-doped-ordered mesoporous carbons
Small-angle X-ray diffraction
Transmission electron microscopy
The project was supported by the National Natural Science Foundation, China (21506138), and the Natural Science Foundation of Zhejiang Province, China (LQ15B060001).
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