Manganese oxide OMS-2 as an effective catalyst for total oxidation of ethyl acetate

被引：147
作者：
Gandhe, Aditi R.
Rebello, Jeanette S.
Figueiredo, J. L.
Fernandes, J. B.
机构：
[1] Univ Porto, Fac Engn, Dept Engn Quim, Lab Catalise & Mat, P-4200465 Oporto, Portugal
[2] Goa Univ, Dept Chem, Talegao Plateau 403206, Goa, India
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2007年 / 72卷 / 1-2期
关键词：
VOCs; ethyl acetate; oxidation; manganese oxide OMS-2; mechanism;
D O I：
10.1016/j.apcatb.2006.10.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This investigation focuses mainly on the use of a synthetic cryptomelane type manganese octahedral molecular sieve, OMS-2, as a catalyst for the total oxidation of ethyl acetate. OMS-2 was found to be a highly efficient catalyst giving 100% conversion and selectivity to CO2, the final oxidation product. In addition, it was stable with time on stream and resistant to coking. A mechanism is proposed to explain the high selectivity. Presence of Mn4+-O2- Lewis acid-base pairs, ability of Mn to exist as a redox couple, viz. Mn4+/Mn3+ and availability of facile lattice oxygen, seem to facilitate the oxidation process. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：129 / 135
页数：7
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