Fabrication of Pd/Mg2P2O7 via a Struvite‐Template Way from Wastewater and Application as Chemoselective Catalyst in Hydrogenation of Nitroarenes. Issue 41 (17th June 2021)

• Record Type: Journal Article
• Authors: Zhang, Peng; Xu, Shaonan; Wang, Yan; Zhang, Wei; Li, Wenqing; Wei, Cundi; Zhang, Peiping; Miao, Shiding
• Is Part Of: Chemistry. Volume 27:Issue 41(2021)
• Page Start: 10666
• Page End: 10676
• Publication Date: 2021-06-17
• Subjects: chemoselective catalysis -- heterogeneous catalysts -- mesoporous magnesium pyrophosphate -- nitroarene hydrogenation -- struvite synthesis; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202100684
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: A highly efficient heterogeneous catalyst Pd/Mg2 P2 O7 was fabricated by combining palladium nanoparticles (PdNPs) and mesoporous Mg2 P2 O7 fibers/rods. Mg2 P2 O7 fibers with ultra‐high specific surface area were prepared from struvite as templates, which were synthesized from waste water containing N‐ and P‐containing pollutants. This strategy provided a novel pathway for developing advanced catalysts from eutrophication‐polluted water. The composite Pd/Mg2 P2 O7 showed brilliant performance in selective hydrogenation of nitro aromatics to give anilines. As an example of nitrobenzene hydrogenation, the conversion to aniline and selectivity were found to reach almost 100 % at a temperature of T =90 °C and under a pressure of P H 2 =2.0 MPa. The superior performance was found to originate from PdNPs, which were boosted by electron transfer afforded by the nanofiber Mg2 P2 O7 supports. The favorable adsorption of withdrawing groups (−NO2 ) was realized by synergistic effects between Pd and oxygen vacancies provided by pyrolysis of struvite. The catalyst remained stable after cycles of reuse with little degradation in catalytic performance. Abstract : One man's trash is another man's treasure : A novel template strategy allows fibrous struvite—a composite Pd/Mg2 P2 O7 with a mesoporous structure and an ultrahigh surface area—to be synthesized from wastewater. The prepared Pd/Mg2 P2 O7 nanowires showed excellent performance in the selective hydrogenation of nitrobenzenes. This strategy provided a new pathway for synthesizing highly efficient catalysts as well as a solution for alleviate eutrophic pollution caused by N‐ and P‐containing substances in wastewater.