Data story: Key signals in Carbon capture materials (sorbents, membranes)

The race to develop commercially viable carbon capture materials has entered a decisive phase. Between 2023 and 2025, venture funding for novel sorbents and membrane technologies grew at a compound annual rate of 38%, reaching $2.1 billion in total disclosed investment. Patent filings for amine-functionalized solid sorbents alone increased 62% year over year according to the European Patent Office. Yet the gap between laboratory performance and industrial deployment remains wide, with fewer than a dozen sorbent or membrane systems operating at scales above 1,000 tonnes of CO2 per year. The data tells a story of accelerating scientific progress colliding with stubborn engineering and economic realities.

Why It Matters

Carbon capture, utilisation, and storage (CCUS) is considered essential to nearly every credible pathway for limiting global warming to 1.5 degrees Celsius. The Intergovernmental Panel on Climate Change estimates that CCUS must contribute between 15% and 30% of cumulative emissions reductions by 2050 in scenarios consistent with the Paris Agreement targets. The International Energy Agency projects global CO2 capture capacity must scale from approximately 50 million tonnes per annum (Mtpa) in 2024 to over 1.2 gigatonnes per annum by 2050 to meet net zero goals. Materials science sits at the core of this challenge because capture cost, energy penalty, and system durability all depend fundamentally on sorbent and membrane performance.

In the United Kingdom, the government's commitment to deploying at least two CCUS clusters by the mid 2020s, anchored by the HyNet North West and East Coast Cluster projects, has created a policy pull for next generation capture materials. The UK's Carbon Capture, Usage and Storage programme, backed by up to 20 billion pounds in support over two decades, explicitly targets cost reductions that only advanced materials can deliver. UK Research and Innovation (UKRI) allocated 120 million pounds between 2022 and 2025 specifically for CCUS innovation, with materials development representing the single largest funding category at 34% of total spend.

The economic case for materials innovation is straightforward. First generation amine scrubbing systems based on monoethanolamine (MEA) solutions require 3.5 to 4.0 gigajoules of thermal energy per tonne of CO2 captured, translating to energy penalties of 25 to 35% for power plant applications. Reducing this energy penalty by even 30% through advanced sorbents or membranes would lower capture costs from the current $60 to $120 per tonne range to $40 to $70 per tonne, fundamentally altering project economics across cement, steel, hydrogen, and power generation sectors.

Key Concepts

Solid sorbents are porous materials engineered to selectively adsorb CO2 from gas mixtures. Unlike liquid amine solutions that absorb CO2 through bulk chemical reactions requiring intensive heating for regeneration, solid sorbents operate through surface interactions that can be reversed with lower energy inputs. Major sorbent categories include amine-functionalised silicas, metal-organic frameworks (MOFs), zeolites, and alkali metal carbonates. The critical performance parameters are working capacity (how much CO2 a sorbent captures per cycle), selectivity (preference for CO2 over nitrogen and other gases), cyclic stability (how many adsorption/desorption cycles the material survives without degradation), and regeneration energy (the heat or pressure change required to release captured CO2).

Membrane separation systems use thin polymer or inorganic barriers that allow CO2 to pass through more readily than other gases, driven by partial pressure differences. The key metrics are permeability (how quickly CO2 moves through the membrane), selectivity (the ratio of CO2 transport to nitrogen transport), and mechanical durability under industrial conditions. Membranes offer advantages in footprint, modularity, and the absence of liquid handling, but face challenges with concentration polarisation, plasticisation at high CO2 partial pressures, and the trade off between permeability and selectivity described by the Robeson upper bound.

Technology readiness level (TRL) provides a standardised framework for assessing material maturity from laboratory concept (TRL 1) through commercial deployment (TRL 9). Most advanced sorbents and membranes for carbon capture currently sit between TRL 4 and TRL 6, meaning they have demonstrated performance in relevant environments but have not yet been validated at full industrial scale. Bridging the gap from TRL 6 to TRL 8 typically requires 5 to 10 years and $50 to $200 million in development capital per technology.

Carbon Capture Materials: Benchmark Ranges

Metric	First Gen (MEA)	Advanced Sorbents	Advanced Membranes	Theoretical Limit
Energy Penalty (GJ/tonne CO2)	3.5 - 4.0	1.8 - 2.8	1.5 - 2.5	0.8 - 1.2
Capture Cost ($/tonne CO2)	60 - 120	35 - 75	30 - 65	15 - 30
Working Capacity (mol CO2/kg)	1.0 - 1.5	1.5 - 4.0	N/A	6.0+
Cyclic Stability (cycles)	N/A	500 - 5,000	10,000+	50,000+
CO2/N2 Selectivity	15 - 25	50 - 200	30 - 80	500+
Operating Temperature (C)	40 - 60	25 - 120	25 - 200	Variable
TRL (2025)	9	4 - 7	4 - 6	1 - 3

Signal 1: Sorbent Durability Data Now Reaching Commercially Relevant Thresholds

The most significant data shift in 2024 and 2025 has been in cyclic stability testing. Three years ago, most advanced solid sorbents demonstrated fewer than 500 temperature swing adsorption (TSA) cycles before losing more than 20% of working capacity. By late 2025, multiple independent groups have reported sorbent formulations exceeding 5,000 cycles with less than 10% capacity degradation.

Svante, a Canadian company operating one of the most advanced pilot plants in the world, published performance data from its solid sorbent system operating at a Lafarge cement plant in British Columbia. The system completed over 3,000 rapid TSA cycles using proprietary structured adsorbent laminates, maintaining capture rates above 90% with an energy penalty approximately 40% below conventional MEA systems. The UK's Carbon Capture and Storage Research Centre at the University of Sheffield independently validated amine functionalised mesoporous silica sorbents reaching 5,200 cycles at a bench scale facility without significant performance loss.

This durability data matters because industrial carbon capture systems must operate continuously for 20 to 30 years, translating to hundreds of thousands of cycles. While a gap remains between current demonstrated stability and full commercial requirements, the trajectory has shifted from exponential degradation curves to near linear, long duration performance profiles.

Signal 2: Metal-Organic Frameworks Moving Beyond the Laboratory

Metal-organic frameworks have long been celebrated for their extraordinary surface areas (exceeding 7,000 square metres per gram in some cases) and tuneable pore chemistry, but commercial sceptics pointed to prohibitive synthesis costs and fragility under humid industrial conditions. The data is now telling a different story.

Mosaic Materials, a Berkeley, California based company spun out of UC Berkeley research, demonstrated a diamine appended MOF at pilot scale capturing CO2 from simulated flue gas with working capacities of 3.2 mol CO2 per kilogram, roughly double the best amine functionalised silica sorbents. The system achieved this performance at moderate temperatures (100 degrees Celsius for regeneration) and maintained stability over 1,200 cycles in humid conditions.

NuMat Technologies, headquartered in Skokie, Illinois, has moved MOF production to commercial scale for gas storage applications, proving that MOFs can be manufactured at costs below $50 per kilogram when produced in tonne quantities. While NuMat's primary markets are electronics and defence, their manufacturing platform validates that the cost barrier for MOF based carbon capture is an engineering challenge rather than a fundamental limitation.

In the UK, the Faraday Institution's collaboration with the University of Manchester produced MOF based membrane composites showing CO2 permeability of 3,500 Barrers with CO2/N2 selectivity above 60, placing these materials well above the 2008 Robeson upper bound. The data suggests hybrid sorbent/membrane systems may ultimately outperform either approach alone.

Signal 3: Membrane Scale Up Accelerating With Industrial Partners

Membrane technology for carbon capture has historically lagged sorbent development due to the fundamental permeability/selectivity trade off. Recent data points signal a shift. MTR (Membrane Technology and Research), based in Newark, California, demonstrated its Polaris membrane system at a 20 tonne per day pilot facility at the Technology Centre Mongstad in Norway, achieving 90% CO2 capture from natural gas combined cycle flue gas with energy penalties below 2.0 GJ per tonne. This represents a 45% reduction in energy penalty compared to MEA baseline systems at the same facility.

Air Liquide invested $35 million in membrane module manufacturing capacity in 2024, targeting industrial CO2 separation applications. Their partnership with the European Cement Research Academy produced field data showing membrane systems can operate reliably in the dust laden, sulphur containing gas streams typical of cement production, a significant advance over earlier laboratory results using clean synthetic mixtures.

In the UK, the University of Edinburgh's Institute for Materials and Processes developed carbon molecular sieve (CMS) membranes fabricated from cellulose precursors, achieving CO2/N2 selectivity above 70 at permeabilities exceeding 1,000 Barrers. These CMS membranes showed less than 5% performance loss after 2,000 hours of continuous operation at 150 degrees Celsius, addressing the thermal stability concerns that limited earlier polymer membrane systems.

Signal 4: Investment Flows Revealing Market Confidence

Capital allocation patterns provide a leading indicator of which materials approaches the market considers most promising. Between 2023 and 2025, solid sorbent companies attracted approximately $1.3 billion in disclosed funding, with Svante ($318 million cumulative), Verdox ($80 million Series B), and Global Thermostat ($150 million from ExxonMobil and other investors) leading the category. Membrane companies attracted approximately $600 million, with MTR and Air Liquide's joint ventures representing the largest commitments.

UK specific investment data shows a pronounced shift toward materials companies. The UK Infrastructure Bank committed 500 million pounds to CCUS projects in 2024, with approximately 15% earmarked for technology development including materials innovation. Breakthrough Energy Ventures participated in three UK based carbon capture materials rounds during 2024, including a 25 million pound Series A for a Sheffield based advanced sorbent developer.

The UK government's CCUS Cluster Sequencing Process, which selected HyNet North West and the East Coast Cluster as Track 1 projects, has created guaranteed offtake that de-risks materials innovation. Track 2 cluster selection, expected to include Acorn in Scotland, will expand the addressable market for UK based materials developers.

Key Players

Established Leaders

Svante operates the most advanced solid sorbent pilot programme globally, with validated performance data from cement and hydrogen production applications. Their structured adsorbent approach reduces cycle times to under 60 seconds, enabling compact system designs.

MTR (Membrane Technology and Research) leads commercial membrane deployment for carbon capture, with their Polaris system demonstrating the best field performance data among membrane technologies.

Air Liquide brings manufacturing scale and industrial gas expertise, with membrane and cryogenic hybrid systems targeting high purity CO2 applications.

Emerging Innovators

Mosaic Materials is advancing diamine appended MOFs toward commercial deployment, with working capacities approximately double those of competing sorbent systems.

Verdox is developing electrochemically mediated carbon capture using quinone based sorbents that can be regenerated electrically rather than thermally, potentially eliminating the need for process heat entirely.

Carbon Clean has deployed its rotating packed bed technology using proprietary solvent/sorbent hybrid systems at over 50 installations globally, with the UK based company targeting modular systems below $30 per tonne.

Action Checklist

• Evaluate sorbent durability data using independent validation rather than vendor reported metrics alone
• Assess membrane candidates against updated Robeson upper bound data published in 2024 and 2025
• Request cyclic stability data spanning at least 1,000 cycles under realistic flue gas conditions including humidity and trace contaminants
• Compare energy penalties against the MEA baseline of 3.5 to 4.0 GJ per tonne as the minimum performance threshold for next generation materials
• Factor in UK policy incentives including the CCUS programme support and UKRI funding availability when modelling project economics
• Conduct materials supply chain risk assessments particularly for MOF precursors and specialty amine compounds
• Engage with CCUS cluster operators to align materials development timelines with deployment schedules

FAQ

Q: How close are advanced sorbents to replacing conventional amine scrubbing at industrial scale? A: The most mature solid sorbent systems (TRL 6 to 7) are expected to reach commercial readiness (TRL 8 to 9) between 2027 and 2030. Svante's pilot programme represents the closest to commercial deployment, with data supporting energy penalties 35 to 45% below MEA systems. However, scaling from pilot (tens of tonnes per day) to full commercial operation (thousands of tonnes per day) introduces manufacturing, integration, and reliability challenges that typically require 3 to 5 additional years.

Q: What is the realistic cost trajectory for membrane based carbon capture? A: Current membrane systems demonstrate capture costs of $45 to $65 per tonne of CO2 at pilot scale. Industry projections based on manufacturing learning curves and module scaling suggest costs could reach $30 to $45 per tonne by 2030 for high concentration CO2 streams (above 15% CO2). For dilute streams such as natural gas power plant exhaust (4 to 5% CO2), membrane costs are likely to remain above $50 per tonne through at least 2032.

Q: Are metal-organic frameworks commercially viable for carbon capture? A: MOFs are transitioning from laboratory curiosities to engineered materials with commercial potential. Manufacturing costs have decreased from thousands of dollars per kilogram to below $50 per kilogram at tonne scale for select formulations. The remaining challenges are long term stability in real industrial environments, reproducible large scale synthesis, and integration into practical contactor designs. Commercial MOF based carbon capture systems are most likely to emerge between 2029 and 2033.

Q: How does UK policy compare to other markets for carbon capture materials development? A: The UK's combination of cluster deployment commitments, direct R&D funding through UKRI, and the UK Emissions Trading Scheme (which reached 47 pounds per tonne in late 2025) creates one of the strongest policy environments globally for carbon capture materials innovation. The US Inflation Reduction Act's 45Q tax credit ($85 per tonne for geologic storage) provides stronger per tonne incentives, but the UK's integrated cluster approach offers more predictable project pipelines for materials developers.

Sources

• International Energy Agency. (2025). CCUS in Clean Energy Transitions: 2025 Update. Paris: IEA Publications.
• Global CCS Institute. (2025). Global Status of CCS Report 2025. Melbourne: Global CCS Institute.
• UK Department for Energy Security and Net Zero. (2025). CCUS Programme: Progress Report and Investment Framework. London: HMSO.
• European Patent Office. (2025). Patent Insight Report: Carbon Capture Sorbent Technologies 2020-2025. Munich: EPO.
• Svante Inc. (2025). Pilot Performance Data: Solid Sorbent Carbon Capture at Lafarge Richmond Cement Plant. Vancouver: Svante.
• National Energy Technology Laboratory. (2025). Carbon Capture Technology Compendium: Sorbents and Membranes. Pittsburgh: US DOE NETL.
• Faraday Institution. (2025). Advanced Materials for Carbon Capture: UK Research Landscape Report. Didcot: Faraday Institution.