Mixed-Phase Oxide Catalyst Based on Mn-Mullite (Sm, Gd)Mn 2 O 5 for NO Oxidation in Diesel Exhaust-Reference-Cited by-同舟云学术

Mixed-Phase Oxide Catalyst Based on Mn-Mullite (Sm, Gd)Mn 2 O 5 for NO Oxidation in Diesel Exhaust

Published:2012-08-17 Issue:6096 Volume:337 Page:832-835
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Wang Weichao¹,McCool Geoffrey¹,Kapur Neeti¹,Yuan Guang¹,Shan Bin¹²,Nguyen Matt¹,Graham Uschi M.³,Davis Burtron H.³,Jacobs Gary³,Cho Kyeongjae¹⁴⁵,Hao Xianghong (Kelly)¹

Affiliation:

1. Nanostellar Inc., 3696 Haven Avenue, Redwood City, CA94063, USA.

2. State Key Laboratory of Materials Processing and Die and Mould Technology and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.

3. Center for Applied Energy Research, University of Kentucky, 2540 Research Park Drive, Lexington, KY 40511, USA.

4. Department of Materials Science and Engineering and Department of Physics, University of Texas at Dallas, Richardson, TX 75080, USA.

5. WCU Multiscale Mechanical Design Division, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Republic of Korea.

Abstract

Cleaning Diesel Exhaust One strategy for removing pollutants from diesel engine exhaust is to trap the unburned carbon soot and then to combust the soot with the NO 2 that is generated from NO; the two pollutants are then converted to N 2 and CO 2 . Diesel exhaust is relatively cold, compared to gasoline engine exhaust, and conversion of NO to NO 2 has required the use of platinum catalysts. W. Wang et al. (p. 832 ) now report that a more earth-abundant catalyst, based on Mn-mullite (Sm, Gd)Mn 2 O 5 metal oxides was able to oxidize NO in simulated diesel exhaust at temperatures as low as 75°C. Spectroscopic studies and quantum chemical modeling suggested that Mn-nitrates formed on Mn-Mn dimer sites were the key intermediates responsible for NO 2 formation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference19 articles.

1. C. H. Bartholomoew R. J. Farrauto Fundamentals of Industrial Catalytic Process (Wiley Hoboken NJ ed. 2 2006).

2. The influence of ethene on the conversion of in a dielectric barrier discharge

3. NO and NO2 Adsorption on Barium Oxide: Model Study of the Trapping Stage of NOx Conversion via Lean NOx Traps

4. Strontium-Doped Perovskites Rival Platinum Catalysts for Treating NO x in Simulated Diesel Exhaust

Cited by 294 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Investigation of the Dual‐Regulatory Mechanism of Zr in MnRE_1‐xZr_xO_2+δ Oxide Catalysts for NO Oxidation;Small;2024-09-06

2. Enhancing Soot Catalytic Combustion Performance of SmMn₂O₅ via Surface Etching;Energy & Fuels;2024-09-05

3. Exploring the dynamic evolution of lattice oxygen on exsolved-Mn2O3@SmMn2O5 interfaces for NO Oxidation;Nature Communications;2024-09-02

4. Advancements in rare earth mullite oxides (AMn2O5) for catalytic oxidation: Structure, activity and design strategies;Applied Catalysis A: General;2024-09

5. Catalytic performances of SmCoO3 perovskite-type catalysts supported on cordierite in volatile organic pollutant oxidation;Journal of the Taiwan Institute of Chemical Engineers;2024-08