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首页> 外文期刊>Journal of Ceramic Processing Research. (Text in English) >H2 permeable nanoporous SiC membrane for an IGCC application
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H2 permeable nanoporous SiC membrane for an IGCC application

机译：用于IGCC的H2渗透性纳米多孔SiC膜

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摘要

Ceramic membranes having less than lnm size pores have great potential for gas separation at high temperature due to their good thermal stability. Moreover,nanoporous silicon carbide membranes have a potential application under hydrothermal conditions at high temperatures since they are highly stable at high temperature. In this research,a nanoporous SiC membrane has been developed on a porous alumina support using a preceramic polymer. For a gradual pore size distribution,γ-Al2O3 interlayer was introduced in between the nanoporous SiC membrane and porous alumina support. The SiC membrane having a controlled pore size was characterized by SEM and pore size measurements. The hydrogen permeability and selectivity towards nitrogen gas of the membrane developed were 0.16 × 10~(-6) mole/m~2·s·pa and 42.5,respectively. The nanoporous hydrogen selective SiC membrane shows a promising application in hydrogen separation from coal gasification such as in the integrated gasification combined cycle (IGCC).
机译：具有小于1nm尺寸的孔的陶瓷膜由于其良好的热稳定性而具有在高温下进行气体分离的巨大潜力。此外，由于纳米多孔碳化硅膜在高温下高度稳定，因此在高温水热条件下具有潜在的应用前景。在这项研究中，已经使用陶瓷前聚合物在多孔氧化铝载体上开发了纳米多孔SiC膜。为了逐渐形成孔径分布，在纳米多孔SiC膜和多孔氧化铝载体之间引入了γ-Al2O3中间层。通过SEM和孔径测量来表征具有受控孔径的SiC膜。所形成的膜的氢渗透性和对氮气的选择性分别为0.16×10〜（-6）mole / m〜2·s·pa和42.5。纳米多孔氢选择性SiC膜在煤气化的氢气分离中，例如在整体气化联合循环（IGCC）中显示出有希望的应用。

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