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This study proposes a nickel hollow fiber membrane reactor for methane catalytic partial oxidation (CPOX) to enhance hydrogen production coupled with in-situ hydrogen separation. Replacing costly palladium membranes, nickel membranes exhibit comparable hydrogen permeability (one order lower) at 800 °C alongside superior cost-effectiveness and thermal stability. Experiments under two operation modes were conducted: Operation I validated hydrogen permeation performance via Sieverts’ law; Operation II integrated CPOX using Ni-based catalysts at 900 °C, achieving simultaneous syngas generation and hydrogen separation. Simulations revealed that hydrogen permeation is diffusion-limited within the nickel membrane, where reducing thickness by two orders of magnitude increased hydrogen concentration to 44%. Optimizing fiber length (reducible by two-thirds) lowered costs. The reactor directly delivers PEMFC-compatible hydrogen (>15% concentration), significantly simplifying hydrogen production.

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Experimental and Simulation on Nickel Hollow Fiber Membrane Hydrogen Separation Enhanced Methane Catalytic Partial Oxidation Reforming

  • 会议论文

  • 发表日期：

    2026年

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  • Yurui Wang,
  • Fuhua Xu,
  • Shuang Li,
  • Yixiang Shi

摘要

This study proposes a nickel hollow fiber membrane reactor for methane catalytic partial oxidation (CPOX) to enhance hydrogen production coupled with in-situ hydrogen separation. Replacing costly palladium membranes, nickel membranes exhibit comparable hydrogen permeability (one order lower) at 800 °C alongside superior cost-effectiveness and thermal stability. Experiments under two operation modes were conducted: Operation I validated hydrogen permeation performance via Sieverts’ law; Operation II integrated CPOX using Ni-based catalysts at 900 °C, achieving simultaneous syngas generation and hydrogen separation. Simulations revealed that hydrogen permeation is diffusion-limited within the nickel membrane, where reducing thickness by two orders of magnitude increased hydrogen concentration to 44%. Optimizing fiber length (reducible by two-thirds) lowered costs. The reactor directly delivers PEMFC-compatible hydrogen (>15% concentration), significantly simplifying hydrogen production.