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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents

ID: 439434.0, Fritz-Haber-Institut / Inorganic Chemistry
Pd nanoparticles supported on N-doped nanocarbon for the direct synthesis of H2O2 from H2 and O2
Authors:Abate, Salvatore; Arrigo, Rosa; Schuster, Manfred E.; Perathoner, Sieglinda; Centi, Gabriele; Villa, Alberto; Su, Dang Sheng; Schlögl, Robert
Date of Publication (YYYY-MM-DD):2010-02
Title of Journal:Catalysis Today
Journal Abbrev.:Catal. Today
Start Page:280
End Page:285
Copyright:© 2010 Elsevier B.V. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The behavior of Pd nanoparticles deposited by sol-immobilization on N-doped nanocarbon (carbon nanotube-like from Pyrograf Products; N-CNT-like) is studied in the direct synthesis of H2O2 and compared with those of the undoped catalysts or prepared by the same Pd deposition method on active carbon (Vulcan XC-72) as the support. The catalytic tests were carried out using a slurry batch- or semi-continuous reactor at room temperature and a total pressure of 10 bar using CO2-expanded methanol as the solvent. The Pd on N-CNT-like gives high productivities to H2O2, comparable to the best literature results, while the selectivity to H2O2 is low due to the low oxygen partial pressure and likely low oxygen coverage on Pd particles. The introducing of nitrogen in the CNT-like material favors not only the dispersion of Pd (with a consequent improvement of the activity), but also the specific turnover, due to probably the electronic effect of pyridine-like nitrogen sites present in the N-CNT-like support favoring the O2 surface coverage. However, the introduction of these N functionalities on the surface has also a negative effect on the rate of H2O2 consecutive conversion to water.
Free Keywords:hydrogen peroxide; Pd; nanocarbon; CNT-like; H2O2 direct synthesis
Research Context: Carbon
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Micro- and Nanostructure / Carbon
Fritz-Haber-Institut/Inorganic Chemistry/Inorganic Chemistry
External Affiliations:Dipartimento di Chimica Industriale ed Ingegneria dei Materiali (INSTM – UdR Messina and ELCASS), University of Messina (Italy)
Identifiers:URL:http://dx.doi.org/10.1016/j.cattod.2010.01.027 [only for subscriber]
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