Methane reforming on Ni/zirconia SOFC anodes
Methane reforming on Ni/zirconia SOFC anodes
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镍/氧化锆 SOFC 阳极上的甲烷重整
DOI：
10.1149/199501.0810pv
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
H. Karoliussen
中科院分区：
文献类型：
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作者：
R. Oedegaard;E. Johnsen;H. Karoliussen
在1,173~1,273K温度范围内，研究了p{subH{sub2}O}/P{subCH{sub4}}在1,173~1,273K温度范围内，甲烷水蒸气在Ni-YSZ阳极(体积分数为60%Ni)上的甲烷水蒸气重整反应。R{subCH{sub4}}=k{Prime}exp({-}{Delta}H{subact}/Rt)(p{subCH{sub4}}){sup 1.20}，其中r{subCH{sub4}}以摩尔CH{sub4}/(h{次}g{subNi})给出，k{Prime}通常为6,300摩尔/(h{次}g{次镍}{次}atm{sup 1.20})和激活能，{Delta}H{subact}，58kJ/摩尔CH{sub4}。重整速率与p{subH{sub2}O}之间没有明显的依赖关系。在假设重整反应生成的所有H{sub2}都参与与O{sup2{-}}的电化学反应的情况下，在入口处形成的H{sub2}的量对应于大约10A/cm{sup2}的电流密度。
Methane steam reforming on Ni-YSZ anodes (60 vol-% Ni) was studied with p{sub H{sub 2}O}/P{sub CH{sub 4}} between 1.5 and 2.5 at temperatures between 1,173 K and 1,273 K. The following expression for the rate of methane reforming was found; r{sub CH{sub 4}} = k{prime}exp({minus}{Delta}H{sub act}/RT)(p{sub CH{sub 4}}){sup 1.20}, where r{sub CH{sub 4}} is given in moles CH{sub 4}/(h{times}g{sub Ni}), k{prime} is typically 6,300 mol/(h{times}g{sub Ni}{times}atm{sup 1.20}) and the activation energy, {Delta}H{sub act}, 58 kJ/mole CH{sub 4}. No significant dependence between the reforming rate and p{sub H{sub 2}O} could be found. The amount of H{sub 2} formed corresponded to a current density of approximately 10 A/cm{sup 2} at the inlet (under the assumption that all H{sub 2} formed by the reforming reaction takes part in the electrochemical reaction with O{sup 2{minus}}).