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Au‐ and Ag‐loaded MnO 2 nanostructures supported on nitrogen‐ and nitrogen–sulfur‐doped pyroproteins: Synthesis and catalytic activity in organic transformations
Author(s) -
Hezarkhani Zeinab,
Shaabani Ahmad
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3624
Subject(s) - chemistry , catalysis , sulfur , nitrogen , oxidizing agent , carbonization , inorganic chemistry , reagent , organic chemistry , polymer chemistry , nuclear chemistry , adsorption
Four novel Au‐ and Ag‐loaded MnO 2 nanostructures supported on nitrogen‐doped pyroprotein of natural silk (Au–MnO 2 @PPNS and Ag–MnO 2 @PPNS) and nitrogen–sulfur‐doped pyroprotein of natural wool (Au–MnO 2 @PPNW and Ag–MnO 2 @PPNW) have been synthesized. Nitrogen‐ and nitrogen–sulfur‐doped pyroproteins were prepared by carbonization of natural silk and wool proteins, respectively. The catalysts were investigated for the aerobic oxidation of aromatic hydrocarbons of petroleum naphtha and the aerobic oxidative synthesis of 2‐phenylbenzo[ d ]thiazoles, 2‐phenyl‐1 H ‐benzo[ d ]imidazoles and 2‐phenyl‐4‐quinazolinones in the absence of any co‐promoter and additional oxidizing reagent. The prepared catalytic systems showed higher catalytic activity in comparison to aggregated catalysts.