Overcoming carbon deactivation in biogas reforming using a hydrothermally synthesised nickel perovskite catalyst
Overcoming carbon deactivation in biogas reforming using a hydrothermally synthesised nickel perovskite catalyst
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DOI：
10.1039/c4ra00846d
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发表时间：
2014-07
期刊：
影响因子：
3.9
通讯作者：
S. E. Evans;O. Good;J. Staniforth;R. Mark Ormerod;R. Darton
中科院分区：
文献类型：
--
作者：
S. E. Evans;O. Good;J. Staniforth;R. Mark Ormerod;R. Darton
水热合成的锆酸镍锶钙钛矿显示出对沼气重整具有优异的选择性，而不会由于碳的形成而失活。实验表明，这种材料能够在相对低的温度下非常有效地将甲烷和二氧化碳转化为合成气，即氢气和一氧化碳的混合物，特别重要的是，甲烷含量高。在这些条件下，我们发现碳产量极低，更重要的是，即使在连续重整活动10天后，碳产量也没有随时间增加。使用通过低温水热方法制备的催化剂的可再生产品的这种转化提供了一种未来可持续的氢气和碳氢化合物以及更高级的碳氢化合物生产的途径，同时降低了一些温室气体排放。
A hydrothermally synthesised nickel-strontium zirconate perovskite is shown to have excellent selectivity towards biogas reforming without suffering from deactivation due to carbon formation. Experiments reveal that this material is capable of very efficiently converting methane and carbon dioxide to synthesis gas, a mixture of hydrogen and carbon monoxide, at relatively low temperatures and, particularly importantly, high methane contents. Under these conditions we find that carbon production is extremely low and more importantly shows no increase over time, even after 10 days of continuous reforming activity. This conversion of a renewable product, using a catalyst prepared by low temperature hydrothermal methods, provides a route to future sustainable hydrogen, and oxygenate and higher hydrocarbon, production whilst lowering some greenhouse gas emissions.