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Catalytic Steam Reforming of Natural Gas over a New Ni Exsolved Ruddlesden‐Popper Manganite in SOFC Anode Conditions
ChemCatChem ( IF 3.8 ) Pub Date : 2020-01-21 , DOI: 10.1002/cctc.201902306 Sebastián Vecino‐Mantilla 1, 2 , Erika Quintero 1 , Camilo Fonseca 1 , Gilles H. Gauthier 1 , Paola Gauthier‐Maradei 1
ChemCatChem ( IF 3.8 ) Pub Date : 2020-01-21 , DOI: 10.1002/cctc.201902306 Sebastián Vecino‐Mantilla 1, 2 , Erika Quintero 1 , Camilo Fonseca 1 , Gilles H. Gauthier 1 , Paola Gauthier‐Maradei 1
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The catalytic behavior of the new Ni exsolved Ruddlesden‐Popper (RP) manganite (La1.5Sr1.5Mn1.5Ni0.5O7) for the reforming reaction was studied. The material was synthesized by the Pechini method and reduced to induce the formation of two phases: n=1 RP structure LaSrMnO4 decorated with Ni nanoparticles. Ni impregnation on (La,Sr)2MnO4 ceramic support of similar composition was also prepared for comparison. The catalytic measurements were carried out in a reduction‐reaction process with low steam to carbon content (S/C=0.15) at 700, 800 and 850 °C. The exsolved material exhibits a better performance than the impregnated for the methane steam reforming reaction, especially at 850 °C with higher conversion and H2 production rate. However, in light alkane gas mixtures (CH4−C2H6 and CH4−C3H8), the behavior is affected due to the competition between reactions and low available metallic active sites, without affecting the H2 production. The exceptional overall results considering this new material as a promising anode material in a SOFC fed with Colombian natural gas.
中文翻译：
SOFC阳极条件下新型Ni溶解的Ruddlesden-Pop锰铁上天然气的催化蒸汽重整
研究了新的Ni溶解的Ruddlesden-Popper（RP）锰铁矿（La 1.5 Sr 1.5 Mn 1.5 Ni 0.5 O 7）对重整反应的催化行为。该材料通过Pechini方法合成并还原以诱导两个相的形成：n = 1的具有Ni纳米粒子修饰的RP结构LaSrMnO 4。Ni浸渍在（La，Sr）2 MnO 4上还准备了类似组成的陶瓷载体用于比较。催化测量是在700、800和850°C的低蒸汽至碳含量（S / C = 0.15）的还原反应过程中进行的。溶解的材料表现出比浸渍甲烷蒸汽重整反应更好的性能，尤其是在850°C时具有更高的转化率和H 2生成速率。但是，在轻烷烃气体混合物（CH 4 -C 2 H 6和CH 4 -C 3 H 8）中，反应和低有效金属活性位之间的竞争会影响其行为，而不会影响H 2。生产。在将这种新材料用作哥伦比亚天然气供料的SOFC中极有希望的阳极材料时，获得了非凡的总体结果。
更新日期：2020-01-22
中文翻译：
SOFC阳极条件下新型Ni溶解的Ruddlesden-Pop锰铁上天然气的催化蒸汽重整
研究了新的Ni溶解的Ruddlesden-Popper（RP）锰铁矿（La 1.5 Sr 1.5 Mn 1.5 Ni 0.5 O 7）对重整反应的催化行为。该材料通过Pechini方法合成并还原以诱导两个相的形成：n = 1的具有Ni纳米粒子修饰的RP结构LaSrMnO 4。Ni浸渍在（La，Sr）2 MnO 4上还准备了类似组成的陶瓷载体用于比较。催化测量是在700、800和850°C的低蒸汽至碳含量（S / C = 0.15）的还原反应过程中进行的。溶解的材料表现出比浸渍甲烷蒸汽重整反应更好的性能，尤其是在850°C时具有更高的转化率和H 2生成速率。但是，在轻烷烃气体混合物（CH 4 -C 2 H 6和CH 4 -C 3 H 8）中，反应和低有效金属活性位之间的竞争会影响其行为，而不会影响H 2。生产。在将这种新材料用作哥伦比亚天然气供料的SOFC中极有希望的阳极材料时，获得了非凡的总体结果。
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