Synthesis, Annealing, and Performances of Pd–Au Asymmetric Composite Membranes for Hydrogen Purification
作者： Yi Hua Ma , Chao-Huang Chen , Jacopo Catalano , Federico Guazzone , E. Andrew Payzant
DOI: 10.1021/IE302740F
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摘要: Composite asymmetric Pd–Au membranes were prepared on porous Inconel and Hastelloy tubular supports by electroless deposition galvanic displacement techniques tested both before after Au in pure H2 atmosphere. The final with average bulk content up to 16.7 wt % 9–15 μm thick showed H2/He ideal selectivities excess of 900 for the entire period their characterization. annealing as-prepared was conducted through coating diffusion mechanism He atmospheres at 500 °C. conditions chosen nonisothermal isothermal HT-XRD studies carried out coupons same used fabrication. After formation layer, steady flux stable gradient membrane top layer. Comparisons between permeance Pd indicated that an 4.5 5.4 had...
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