Metallic nickel hollow fiber membranes for hydrogen separation at high temperatures
MetadataShow full item record
Metallic nickel dense hollow fiber membranes were fabricated by a combined spinning and high-temperature sintering technique. Hydrogen permeation through the nickel hollow fiber membranes was measured at high temperatures up to 1000 °C using H2-containing gas mixtures fed on the shell side and N2 as the sweep gas in the fiber lumen. The experimental results indicated the sintering should be carried out at around 1400 °C for 3 h, under a hydrogen-containing atmosphere so as to reach the required densification of the nickel hollow fiber membranes. Hydrogen permeation through the dense nickel hollow fiber membranes is controlled by H-atom diffusion through the membrane bulk, and can be well described by the Sieverts' equation with the activation energy of 51.07 kJ mol-1. For the hollow fiber with wall thickness of 256 µm, the hydrogen permeation flux value reached up to 7.66×10-3 mol m-2 s-1 at 1000 °C with 100% H2-permselectivity. The Ni hollow membrane exhibits high stability in CO2, CO or steam containing atmospheres, and demonstrates a potential use in hydrogen production by high temperature hydrocarbon reforming reactions.
Showing items related by title, author, creator and subject.
Nickel hollow fiber membranes for hydrogen separation from reformate gases and water gas shift reactions operated at high temperaturesWang, M.; Zhou, Y.; Tan, X.; Gao, J.; Liu, Shaomin (2019)© 2019 Elsevier B.V. High temperature H2-selective membranes can be applied as the membrane reactor for pure hydrogen production by catalytic reforming of alcohols or hydrocarbons. Conventional Pd-based membranes are ...
Wang, M.; Song, J.; Li, Y.; Tan, X.; Chu, Y.; Liu, Shaomin (2017)Nickel is a cheaper metallic material compared to palladium membranes for H2 separation. In this work, metallic Ni hollow fiber membranes were fabricated by a combined phase inversion and atmospheric sintering method. The ...
H2/CH4/CO2-tolerant properties of SrCo0.8Fe0.1Ga0.1O3 − δ hollow fiber membrane reactors for methane partial oxidation to syngasMeng, X.; Bi, X.; Meng, B.; Yang, N.; Tan, X.; Liu, Lihong; Liu, Shaomin (2015)Oxygen permeable ceramic membranes have potential applications as the high temperature membrane reactors for cost-effective syngas production from methane partial oxidation. The prerequisite to realize this potential is ...