Reduced perovskite LaNiO 3 catalysts modified with Co and Mn for low coke formation in dry reforming of methane
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- Reduced perovskite LaNiO 3 catalysts modified with Co and Mn for low coke formation in dry reforming of methane
- Kim, Won Yong; Jang, Jum Suk; Ra, Eun Cheol; Kim, Kwang Young; Kim, Eun Hyup; Lee, Jae Sung
- Issue Date
- Elsevier B.V.
- APPLIED CATALYSIS A-GENERAL, v.575, pp.198 - 203
- In dry reforming of methane (DRM), coke deposition on the Ni-based catalyst is the main cause of instability of the process. Perovskite LaNiO 3 is a well-known highly active catalyst precursor for DRM, but the La-Ni catalyst derived from it is susceptible to severe coke deposition and thus difficult for practical applications. To improve its stability and activity, Co and Mn are introduced to develop a tri-metallic LaNi 0.34 Co 0.33 Mn 0.33 O 3 catalyst precursor. The role of Mn is to improve the stability of the catalyst, whereas Co is an additional active component to increase the reaction rates. A strong metal and support interaction mediated by MnO is noted in the tri-metallic catalyst, which contributes to a synergistic effect of the tri-metals to sustain the high activity and stability under the harsh conditions of DRM.
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