Carbon dioxide reforming of methane to synthesis gas over hexaaluminate ANiAl 11 O 19-delta (A = Ca, Sr, Ba and La) catalysts
作者： Zhanlin Xu , Ming Zhen , Yingli Bi , Kaiji Zhen
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摘要: A series of A‐modified hexaaluminates, ANiAl11O19-δ (A = Ca, Sr, Ba and La) as new catalysts for carbon dioxide reforming methane to synthesis gas, were prepared by decomposition nitrates calcination at high temperature. Nickel ions active component inlayed in the hexaaluminate lattices substitute part Al ions. The structure properties these samples characterized using XRD, XPS, TPR TGA techniques. hexaaluminates exhibited significantly catalytic activity stability temperature, instance 780°C 18 h, conversion CH4 CO2 was kept over 91.0 93.7%, respectively, meanwhile no Ni sintering, phase transformation catalyst deactivation due deposition found. Besides, modifier mirror plane layer showed different effects on reducibility transition metal lattices.
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