Membranes are the simplest and most efficient means to selectively remove hydrogen (H₂) from syngas to achieve a specific H₂/carbon monoxide (CO) ratio. Syngas produced during gasification typically contains a higher than desired concentration of hydrogen and a non-optimal H₂/CO ratio. Air Liquide Advanced Separations’ (ALaS) industry leading, high selectivity membranes adjust the ratio of H₂ and CO to an optimal value by selectively removing hydrogen from feed gas until the ratio is sufficient for customer needs. Hydrogen permeates ALaS' high-selectivity membrane much quicker than carbon monoxide, alowing the amount of hydrogen removed to be controlled. This results in an optimized ratio and high quality hydrogen stream that can be achieved at a low pressure.