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Influence of Metal Precursors and Reduction Protocols on the Chloride‐Free Preparation of Catalysts for the Direct Synthesis of Hydrogen Peroxide without Selectivity Enhancers
Author(s) -
Sterchele Stefano,
Biasi Pierdomenico,
Centomo Paolo,
Shchukarev Andrey,
Kordás Krisztián,
Rautio AnneRiikka,
Mikkola JyriPekka,
Salmi Tapio,
Canton Patrizia,
Zecca Marco
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201600021
Subject(s) - catalysis , hydrogen peroxide , selectivity , reducing agent , chemistry , nanoparticle , metal , inorganic chemistry , combinatorial chemistry , organic chemistry , materials science , nanotechnology
Different metal precursors and reducing agents were applied in the preparation of 1 wt % Pd catalysts supported on commercial ion‐exchange resin (Lewatit K2621) and used in the direct synthesis of H 2 O 2 . The catalysts were characterized by using TEM and their performance was evaluated in the direct synthesis of H 2 O 2 (in a batch and semi‐batch reactor) to investigate the relationship between the catalyst preparation methods, morphology, and catalytic performance. As expected, both the choice of the Pd precursor and the reduction conditions had a strong influence on the size and size distribution of the resulting supported nanostructured metal nanoparticles and, consequently, on the catalytic performance. The best combination of metal precursor and reduction agent was [Pd(NH 3 ) 4 ]SO 4 reduced with hydrogen. This catalyst had the largest average size of the Pd nanoparticles and the broadest size distribution.