Multicomponent Pt-based catalyst for highly efficient chemoselective hydrogenation of 4-carboxybenzaldehyde

[Display omitted] •It is the first time to use the metals@carbon composites in the hydrogenation of 4-carboxybenzaldehyde.•Pt-FeNi@C catalyst has unique bipyramidal structure and porous graphene core-shell structure.•The Pt-FeNi@C catalyst shows the best catalytic performance and stability than the...

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Bibliographic Details
Published in:Journal of catalysis 2021-09, Vol.401, p.174-182
Main Authors: Fang, Xu, Fan, Aixin, Wang, Zhen, Wang, Yao, Li, Yunrui, Li, Shuna, Wang, Yinghao, Dong, Chenglong, Sun, Haixiao, Liu, Yuanyuan, Zhang, Xin, Han, Yehua, Dai, Xiaoping
Format: Article
Language:English
Subjects:
4-Carboxybenzaldehyde
Hydrogenation
Metals@carbon
MOF-derived
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Summary:[Display omitted] •It is the first time to use the metals@carbon composites in the hydrogenation of 4-carboxybenzaldehyde.•Pt-FeNi@C catalyst has unique bipyramidal structure and porous graphene core-shell structure.•The Pt-FeNi@C catalyst shows the best catalytic performance and stability than the Pt/C and Pd/C catalysts in the hydrogenation of 4-carboxybenzaldehyde.•The Pt-FeNi@C catalyst can effectively inhibit decarbonylation reaction. The design of efficient nanostructured catalysts is highly desirable for promoting the hydrogenation of 4-carboxybenzaldehyde (4-CBA), which are the key process of hydrorefining of crude terephthalic acid (CTA) to pure terephthalic acid (PTA). Herein, the Pt-FeNi@C, Pt-Fe@C and Pt-Ni@C catalysts were developed and proved to be active for the selective hydrogenation of 4-CBA. As a result, the excellent 4-hydroxymethylbenzoic acid (4-HMBA) selectivity (85%) and benzoic acid (BA) selectivity (88%) were achieved on Pt-FeNi@C and Pt/C, respectively. In comparison with the commercial Pd/C catalyst, the Pt-FeNi@C catalyst exhibits excellent activity (97%) and reduces the occurrence of decarbonylation. Moreover, the Pt-FeNi@C catalyst exhibits excellent recyclability: the catalytic activity did not decrease significantly after four reaction cycles. In combination with detailed characterization, the Pt-FeNi@C catalyst has porous graphene core-shell architecture and remarkable electron transfer capacity. This work may provide some inspirations for the exploration of new PTA hydrofining catalysts.
ISSN:0021-9517
1090-2694
DOI:10.1016/j.jcat.2021.07.019