Technologies to produce hydrogen from coal gasification address issues of security of energy supply whilst providing a path to a decarbonized-energy economy. Coal is an abundant fossil fuel in Australia and is responsible for over 80% of electrical power generated. A part of the cLET project in Queensland, Australia, is aimed at proof-of-concept of silica membranes to process syngas. The project has objectives in membrane scale-up, computational flow dynamics and membrane reactor. Membranes meeting project requirements have been developed and experimental results validated using computational fluid dynamics (CFD) for membrane units. Flux targets on the formed membranes were achieved at 375°C. By coupling the phenomenological equations of gas transport with bulk transport, CFD was able to predict mixture separation, assisting with the next scale up steps.