Synthesis of p-aminophenol by transfer hydrogenation of nitrobenzene using formic acid as hydrogen source

被引：0
|
作者：
Wang, Yufei [1 ]
Jia, Yu [1 ]
Zhang, Yisheng [1 ]
Xue, Wei [1 ,2 ]
Li, Fang [1 ,2 ]
Wang, Yanji [1 ,2 ,3 ]
机构：
[1] Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin,300400, China
[2] Tianjin Key Laboratory of Chemical Process Safety, Tianjin,300400, China
[3] Hebei Industrial Technology Research Institute, Green Chemical Industry, Hebei, Cangzhou,061000, China
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2024年 / 43卷 / 08期
关键词：
Catalysis - Catalyst selectivity - Chemical industry - Hydrogenation - Nitrobenzene;
D O I：
10.16085/j.issn.1000-6613.2023-1200
中图分类号：
学科分类号：
摘要：
With UiO-66 as the precursor, ZrO2@C was prepared by calcination in N2 atmosphere. Then, Pd/ZrO2@C was prepared by impregnation method. In this paper, the catalytic transfer hydrogenation of nitrobenzene (NB) to p-aminophenol (PAP) over Pd/ZrO2@C+SO42-/ZrO2 was studied with formic acid (FA) as hydrogen source. Characterization results showed that tetragonal ZrO2 was present in ZrO2@C and was embedded in amorphous C. With the increase of calcination temperature and time in the air, the C content and specific surface area of ZrO2@C decreased accordingly, while the Pd particle size became larger. Pd in the Pd/ZrO2@C catalyst was in the form of Pd0 and Pd2+. The content of Pd2+ decreased with C content, While the content of Pd0 increased. When the content of Pd0 was higher than that of Pd2+, PAP selectivity decreased obviously. Pd/ZrO2@C-200-4+SO42-/ZrO2 exhibited good catalytic activity at 140℃ for 6h. The conversion of NB was 63.7% and the selectivity of PAP was 42.3%. © 2024 Chemical Industry Press Co., Ltd.. All rights reserved.
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页码：4421 / 4431
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