The deposition of coke during carbon dioxide reforming of methane over intermetallides
The deposition of coke during carbon dioxide reforming of methane over intermetallides
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DOI：
10.1016/j.cattod.2010.03.003
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发表时间：
2010-11
期刊：
影响因子：
5.3
通讯作者：
L. A. Arkatova
中科院分区：
文献类型：
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作者：
L. A. Arkatova
在600-900°C温度范围内，研究了Ni_3Al和Ni_3Al +5%Mo体系的甲烷干重整反应。采用自蔓延高温合成法制备了材料，并采用XRD（原位和非原位）、DTA-TG、SEM+EDX、HRTEM+EDS和XPS等手段对材料进行了表征。在中等Mo含量（5- 10 wt.%）下观察到Mo_2C相的形成，这对应于在苛刻的二氧化碳重整条件下大大改进的催化活性和稳定性。研究了Ni 3Al和Ni 3Al +5%Mo催化剂上不同类型积炭的结构和形貌。结果表明，在Ni 3Al合金中添加少量Mo，可减少合金的积碳。结果表明，Ni 3Al +5%Mo是一种很有前途的甲烷二氧化碳干重整催化剂。
Dry reforming of methane was studied over the systems on the base of Ni3Al and Ni3Al+5%Mo in the temperature range 600–900°C. The materials have been prepared by self-propagating high temperature synthesis and characterized by XRD (in situ and ex situ), DTA–TG, SEM+EDX, HRTEM+EDS and XPS. The formation of Mo2C phase was observed at moderate Mo content (5–10wt.%), which corresponds to a much improved catalytic activity and stability under the severe carbon dioxide reforming conditions. The structure and morphology of different types of carbon deposits obtained on Ni3Al and Ni3Al+5%Mo catalysts were investigated. The results indicated that the addition a low amount of Mo to Ni3Al led to a decrease in carbon deposition. It is shown that Ni3Al+5%Mo is promising catalyst for dry reforming of methane with carbon dioxide.