Effect of Partial Substitution of Ni by Cu in LaNiO3 Perovskite Catalyst for Dry Methane Reforming

doi:10.1016/S1872-2067(11)60378-1

催化学报 ›› 2012, Vol. 33 ›› Issue (5): 797-801.DOI: 10.1016/S1872-2067(11)60378-1

Effect of Partial Substitution of Ni by Cu in LaNiO₃ Perovskite Catalyst for Dry Methane Reforming

G. R. MORADI*, F. KHOSRAVIAN, M. RAHMANZADEH

Catalyst Research Center, Chemical Engineering Department, Faculty of Engineering, Razi University, Kermanshah 67149-67346, Iran

收稿日期:2011-10-25 修回日期:2012-02-27 出版日期:2012-05-09 发布日期:2012-05-09

Effect of Partial Substitution of Ni by Cu in LaNiO₃ Perovskite Catalyst for Dry Methane Reforming

G. R. MORADI*, F. KHOSRAVIAN, M. RAHMANZADEH

Catalyst Research Center, Chemical Engineering Department, Faculty of Engineering, Razi University, Kermanshah 67149-67346, Iran

Received:2011-10-25 Revised:2012-02-27 Online:2012-05-09 Published:2012-05-09

摘要/Abstract

摘要： A series of ternary perovskite type oxides LaNi_1-xCu_xO₃ (x = 0.2, 0.4, 0.6, 0.8, and 1.0) were synthesized via the sol-gel method in propionic acid. Partial substitution of Ni by Cu showed higher activities and selectivities towards syngas products. LaNi_0.8Cu_0.2O₃was the most active toward the CH₄ and CO₂ conversions, and was selective for syngas products. Temperature-programmed reduction results showed that the addition of Cu facilitates the reduction of Ni³⁺ to Ni⁰, which is the main reason for the higher performance of this catalyst.

关键词: dry reforming of methane, perovskite, lanthanun, nickel, sol-gel method

Abstract: A series of ternary perovskite type oxides LaNi_1-xCu_xO₃ (x = 0.2, 0.4, 0.6, 0.8, and 1.0) were synthesized via the sol-gel method in propionic acid. Partial substitution of Ni by Cu showed higher activities and selectivities towards syngas products. LaNi_0.8Cu_0.2O₃was the most active toward the CH₄ and CO₂ conversions, and was selective for syngas products. Temperature-programmed reduction results showed that the addition of Cu facilitates the reduction of Ni³⁺ to Ni⁰, which is the main reason for the higher performance of this catalyst.

Key words: dry reforming of methane, perovskite, lanthanun, nickel, sol-gel method

G. R. MORADI*, F. KHOSRAVIAN, M. RAHMANZADEH. Effect of Partial Substitution of Ni by Cu in LaNiO₃ Perovskite Catalyst for Dry Methane Reforming[J]. 催化学报, 2012, 33(5): 797-801.

G. R. MORADI*, F. KHOSRAVIAN, M. RAHMANZADEH. Effect of Partial Substitution of Ni by Cu in LaNiO₃ Perovskite Catalyst for Dry Methane Reforming[J]. Chinese Journal of Catalysis, 2012, 33(5): 797-801.

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Effect of Partial Substitution of Ni by Cu in LaNiO₃ Perovskite Catalyst for Dry Methane Reforming

Effect of Partial Substitution of Ni by Cu in LaNiO₃ Perovskite Catalyst for Dry Methane Reforming

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