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Syntheses of Hierarchical MnO 2 via H 2 O 2 Selectively Reducing KMnO 4 for Catalytic Combustion of Toluene
Author(s) -
Chen Jin,
Chen Xi,
Xu Zhen,
Xu WenJian,
Li JuanJuan,
Jia HongPeng,
Chen Jing
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600921
Subject(s) - toluene , catalysis , stoichiometry , molar ratio , catalytic combustion , redox , combustion , chemistry , oxidation state , degradation (telecommunications) , inorganic chemistry , nuclear chemistry , phase (matter) , materials science , organic chemistry , telecommunications , computer science
MnO 2 materials were facilely prepared via the rapid redox reactions of KMnO 4 and H 2 O 2 in acidic medium, which exhibit the significant improvement of catalytic activity in the degradation of gaseous toluene compared to commercial MnO 2 . It was found that the molar ratio of H 2 O 2 /KMnO 4 has a great influence on the crystalline phase, morphology and average oxidation state of the as‐prepared MnO 2 . The 3‐MnO 2 sample prepared by using three equivalents of stoichiometric H 2 O 2 displays the best catalytic activity for the total combustion of toluene (concentration is up to 1000 ppm) at 300 o C. The mechanism of the influence of different H 2 O 2 addition amount has also been discussed by catalytic performance and nature of materials.