biostudies-literatureUnknown16(1)Ullah IOne significant obstacle to the colonization of Mars is the high cost of excess launch mass required for long-term space travel and the establishment of a settlement. The Sabatier reaction provides a means for recycling water and rocket propellant that dramatically reduces the supplement. Herein, we introduce a membrane Sabatier system by integrating a catalytic reactor with an H₂O vapor permselective membrane tube. We achieve a substantial increase in CO₂ conversion, a high CH₄ yield and excellent long-term stability via highly efficient in-situ water removal. Furthermore, the system's robustness under intermittent power supplies, and its adaptability across a wide range of reaction conditions, makes it highly compatible with the electrolytic hydrogen prodNature communications8624https://www.ebi.ac.uk/biostudies/studies/S-EPMC12480640biostudies-literatureA membrane Sabatier system for water recovery and rocket propellant production.PMC12480640Ahmed SMRen JAbbasi ZUllah ILou HZeng FWu WWang ZfalseA membrane Sabatier system for water recovery and rocket propellant production.One significant obstacle to the colonization of Mars is the high cost of excess launch mass required for long-term space travel and the establishment of a settlement. The Sabatier reaction provides a means for recycling water and rocket propellant that dramatically reduces the supplement. Herein, we introduce a membrane Sabatier system by integrating a catalytic reactor with an H₂O vapor permselective membrane tube. We achieve a substantial increase in CO₂ conversion, a high CH₄ yield and excellent long-term stability via highly efficient in-situ water removal. Furthermore, the system's robustness under intermittent power supplies, and its adaptability across a wide range of reaction conditions, makes it highly compatible with the electrolytic hydrogen prod2025-01-01T00:00:00Z2025 Sep2026-06-03T23:19:55.542Z2026-05-03T03:10:29.693ZS-EPMC124806404102279610.1038/s41467-025-63667-w