A sticky solution could improve carbon capture materials
Is glue the answer to climate change? Researchers at the Energy Safety Research Institute (ESRI) at Swansea University have proven that it could certainly help.
They have developed a new material capable of capturing the greenhouse gas carbon dioxide (CO2) with the key ingredient being a common epoxy resin you probably have at home.
Carbon capture materials are a crucial part of a range of technologies, alongside renewables and energy efficiency solutions, that can help reduce the amount of CO2 we release into the atmosphere.
“We show that small epoxy molecules typically found in glues can stick larger ones together to make effective carbon capture materials potentially useful to tackle climate change,” said Dr Enrico Andreoli, lead of the research study now subject of a paper published in Chemistry of Materials.
Dr Louise Hamdy, first author of the paper, added “We’ve developed a new approach to making an effective CO2 capture material from a widely studied CO2-reactive polyamine by reaction with an industrially mass-produced epoxy resin. This material shows very high CO2 uptake and could potentially be used to capture CO2 from industrial flue gas streams or from the air, relieving us from some of the worst effects of global warming.”
Current CO2 capture technologies need to be significantly advanced. Major challenges include materials cost, capacity, CO2-selectivity, regeneration, robustness and stability to water. Solid CO2 capture materials composed of polyamines supported on alumina or silica have emerged as promising carbon capture materials.
However, rather than follow suit, the researchers at ESRI cross-linked the polyamine into a solid by using epoxy resin – constituting just one-tenth of the mass of the material – maximising the CO2-reactive component and avoiding the use of a support. “This confirms the validity of my original idea of using cross-linking as an alternative to bulky supports,” said Andreoli.
The cross-linked material modified with a hydrophobic additive captured almost 20% of its weight in pure CO2 at 90 °C. This finding confirmed a previous hypothesis that the introduction hydrophobic groups can disrupt the internal structure of the material to promote CO2 uptake by the polyamine.
The additive not only increased the amount of captured CO2 but did so at a lower temperature. Hamdy commented, “This finding is significant as it proves that through the introduction of additives, we can fine tune these materials for optimum performance at specific working temperatures.”
Experiments revealed the functionalised sample to be highly selective for CO2 over nitrogen (N2), showing negligible uptake of N2. Selectivity was further explored by testing the material performance under flue gas-like conditions. This revealed that the sample could capture 9.5% of its weight in CO2 under a dilute CO2 stream of 10% CO2/90% N2 at 90 °C in only 15 minutes.
On subjecting the material to repetitive capture cycles, increasing the temperature to 155 °C under pure CO2 for 5 minutes to regenerate, the material showed no loss of capacity for 29 cycles, testament to the robustness of the material.
The functionalised material also performed exceptionally well under humid conditions – often a huge challenge for many CO2 sorbent solids. At 25 °C, in pure CO2, the pre-hydrated material was able to capture an impressive 23.5%. This opens up the possibility of this material being developed for capture of CO2 directly from the air.
“This research is defining a new and promising direction to economical and effective carbon capture materials. Our institute has a strong focus on developing and deploying new technologies in the field of carbon capture, utilisation, and storage. This paper is evidence of the level of our expertise,” said Professor Andrew Barron, founder and director of ESRI.
Learn more: Is glue the answer to climate change?
The Latest on: Carbon capture materials
via Google News
The Latest on: Carbon capture materials
- Nanoporous material nets contaminant from wateron July 3, 2019 at 4:14 am
“We are excited to find a MOF that showed excellent capture capabilities ... that allow the material to hold PFAS compounds.” Both MOFs worked much better than existing technology, which consists ... […]
- New carbon capture technology helps Drax, ag sector decarbonizeon July 2, 2019 at 2:53 pm
Under optimal conditions, up to 70 per cent of the material produced is protein. The benefits of this process over other carbon capture technologies is that the CO 2 does not need to be separated from ... […]
- Materials-Soft drink scienceon July 1, 2019 at 6:15 am
The unconventional approach follows interest in other low-cost feedstocks, such as banana peels and coffee grounds, for adsorbents to capture carbon dioxide emitted ... Transforming discarded sodas ... […]
- Glue could be the magic ingredient for cheap and efficient CO₂ captureon June 28, 2019 at 7:45 am
Carbon capture and storage is a hot topic among researchers striving to save the planet from climate change. Scientists are constantly trying to develop and improve materials which can capture ... […]
- Plans confirmed for UK industrial CCU plant: Has carbon capture's time finally come?on June 28, 2019 at 6:29 am
TCE claims the project will "help pave the way" for other industrial applications of CO2 capture. "The CCU demonstration plant will enable us to reduce our carbon emissions, whilst securing supplies ... […]
- The world needs to get serious about combating carbon emissionson June 27, 2019 at 12:15 pm
Carbon capture Reducing emissions from the more challenging sectors ... Innovation can also help reduce emissions with designs for cars and buildings that contain less material with a high carbon ... […]
- Tata Chemicals plans first UK industrial carbon capture demo planton June 26, 2019 at 4:08 pm
whilst securing supplies of a critical raw material, helping to grow the export of our products across the world,” TCE managing director Martin Ashcroft said in a statement. Carbon capture, storage ... […]
- Tata to build UK’s biggest carbon capture projecton June 26, 2019 at 4:01 pm
Liquid CO2 is a key raw material used to make sodium bicarbonate. The government will contribute £4.2m to the scheme after creating two funding programmes, collectively worth £44m, to encourage ... […]
- UK's biggest carbon capture project is step-change on emissionson June 26, 2019 at 4:01 pm
Carbon capture effectively traps the emissions from power plants ... whilst securing supplies of a critical raw material”. Tata also owns one of India’s biggest energy companies and has promised to ... […]
- First snapshots of trapped CO2 molecules shed new light on carbon captureon June 26, 2019 at 8:06 am
Tiny specks with enormous surfaces MOFs have the largest surface areas of any known material ... degrees Celsius will require some form of carbon capture technology," said Yuzhang Li, a Stanford ... […]
via Bing News