I need a well-researched, publication-ready review article that maps out the latest technology advancements in industrial gas-separation membranes, with a clear emphasis on the newest material innovations. Please anchor the discussion on polymeric membranes and mixed-matrix membranes (MMMs). The article should: • Trace how breakthroughs in polymer chemistry and hybrid filler design are shifting selectivity–permeability trade-offs. • Compare laboratory performance data with real-plant results to highlight practical viability. • Summarise key challenges—plasticisation, ageing, scaling-up—and present the current state-of-the-art solutions being tested. • Reference peer-reviewed papers, patents, and any landmark pilot projects from the last five years, cited in an accepted academic style (ACS, APA, or similar). A concise abstract, clear section headings, and a conclusion that flags the most promising research directions will round out the piece. Originality is essential; I will run a plagiarism check. If you have prior experience writing technical reviews in membrane science or chemical engineering and can deliver a polished manuscript with solid referencing, I look forward to reading your proposal.