Catalytic properties of a pure Ni coil catalyst for methane steam reforming
Catalytic properties of a pure Ni coil catalyst for methane steam reforming
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DOI：
10.1016/j.ijhydene.2017.10.135
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发表时间：
2017-12
影响因子：
7.2
通讯作者：
T. Hirano;Ya Xu
中科院分区：
文献类型：
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作者：
T. Hirano;Ya Xu
为了在较宽的甲烷水蒸气重整反应条件下保持稳定的催化性能，组装了一种卷紧的纯镍催化剂。线圈催化剂具有88.1 cm 2/cm 3的高几何比表面积，在空速范围内达到了本研究的目的（455-2800 h−1），蒸汽/碳比（0.62-2.48），温度（973-1073 K），这在我们先前开发的具有59.4 cm 2/cm 3的几何比表面积的Ni蜂窝状催化剂上难以实现。甲烷水蒸气重整反应略有加速的反应物流，因为传质增强的H2，CO和CO2。作为上述条件的函数，评价产物的转化率、选择性和产率。单位催化剂体积的高产氢率表明镍线圈催化剂在小规模制氢系统中具有很高的应用潜力。
A tightly rolled pure Ni coil catalyst was assembled to ensure a stable catalytic performance in a wide range of conditions for methane steam reforming. With a high geometric specific surface area of 88.1 cm2/cm3, the coil catalyst achieved the objective of this study in the range of the space velocity (455-2800 h−1), steam-to-carbon ratio (0.62–2.48), and temperature (973–1073 K), which was hard to achieve on our previously developed Ni honeycomb catalyst with a geometric specific surface area of 59.4 cm2/cm3. Methane steam reforming reaction was slightly accelerated by the reactant flow because of the mass transfer enhancement of H2, CO, and CO2. The conversion, selectivity, and yield of the products were evaluated as a function of the conditions mentioned above. The high H2production rate per unit catalyst volume demonstrated the high potential of the Ni coil catalyst for applications to small-scale hydrogen production system.