CO2 to SAF: A One-Step Solution
The title of this post is the same as that of this article on the Chemical Engineer.
This is the sub-heading,
Oxford spinout OXCCU has launched a demonstration plant at London Oxford Airport to trial its one-step process of turning CO2 into sustainable aviation fuel (SAF). Aniqah Majid visited the plant to investigate the benefits of its “novel” catalyst
One word in this sub-heading caught my eye.
When I was a young engineer in the Computer Techniques section in the Engineering Department at ICI Plastics Division, I did a small mathematical modelling project for this chemical engineer, using the section’s PACE 231-R analogue computer.
He was impressed and gave the 23-year-old self some advice. “You should apply that beast to catalysts.”
I have never had the chance to do any mathematically modelling of catalysts either at ICI Plastics or since, but I have invested small amounts of my own money in companies working with advanced catalysts.
So when OXCCU was picked up by one of my Google Alerts, I investigated.
I like what I found.
The three raw ingredients are.
- Green Hydrogen
- Carbon dioxide perhaps captured from a large gas-fired powerstation like those in the cluster at Keadby.
- OXCCU’s ‘novel’ catalyst, which appears to be an iron-based catalyst containing manganese, potassium, and organic fuel compounds.
I also suspect, that the process needs a fair bit of energy. These processes always seem to, in my experience.
This paragraph outlines how sustainable aviation fuel or (SAF) is created directly.
This catalyst reduces CO2 and H2 into CO and H2 via a reverse water gas shift (RWGS) process, and then subsequently turns it into jet fuel and water via Fischer-Tropsch (FT).
The Wikipedia entry for Fischer-Tropsch process has this first paragraph.
The Fischer–Tropsch process (FT) is a collection of chemical reactions that converts a mixture of carbon monoxide and hydrogen, known as syngas, into liquid hydrocarbons. These reactions occur in the presence of metal catalysts, typically at temperatures of 150–300 °C (302–572 °F) and pressures of one to several tens of atmospheres. The Fischer–Tropsch process is an important reaction in both coal liquefaction and gas to liquids technology for producing liquid hydrocarbons.
Note.
- I wouldn’t be surprised that to obtain the carbon monoxide and hydrogen or syngas for the Fischer-Tropsch process, excess hydrogen is used, so the OXCCU process may need a lot of affordable hydrogen, some of which will be converted to water in the RWGS process.
- The high temperatures and pressures for the Fischer-Tropsch process will need a lot of energy, as I predicted earlier.
But I don’t see why it won’t work with the right catalyst.
The Wikipedia entry for the Fischer-Tropsch process also says this.
Fischer–Tropsch process is discussed as a step of producing carbon-neutral liquid hydrocarbon fuels from CO2 and hydrogen.
Three references are given, but none seem to relate to OXCCU.
OXCCU have a web site, with this title.
Jet Fuel From Waste Carbon
And this mission statement underneath.
OXCCU’s mission is to develop the world’s lowest cost, lowest emission pathways to make SAF from waste carbon, enabling people to continue to fly and use hydrocarbon products but with a reduced climate impact.
It looks like they intend to boldly go.
Conclusion
My 23-year-old self may have been given some good advice.
Berkeley Scientists Finally Solve 10-Year Puzzle Enabling Efficient CO2-to-Fuel Conversion With Major Climate Impact Potential
The title of this post, is the same as that of this article on Sustainability Times.
This is the sub-heading.
In a groundbreaking advancement, scientists at Lawrence Berkeley National Laboratory and SLAC National Accelerator Laboratory have unveiled the critical mechanisms behind the degradation of copper catalysts, a revelation that promises to revolutionize the production of sustainable fuels by enhancing the efficiency and stability of CO2 conversion processes.
This paragraph gives more details.
Scientists from the Lawrence Berkeley National Laboratory and SLAC National Accelerator Laboratory have made a groundbreaking discovery in the field of artificial photosynthesis. By utilizing advanced X-ray techniques, they have uncovered the critical factors that limit the performance of copper catalysts in converting carbon dioxide and water into useful fuels. This revolutionary insight could significantly enhance the stability and efficiency of catalysts in CO2 conversion processes, potentially accelerating the production of ethanol and ethylene. The research, which tackles a decades-old puzzle, offers promising avenues for the development of more durable catalyst systems, paving the way for future advancements in sustainable energy solutions.
I first came across catalysts in my working life, when I was working at ICI. I was modelling a chemical process called sulphonation for a guy who was trying to find an efficient way to create the monomer of building block for a new engineering plastic.
Some feel that all plastics are bad for the environment, but I think that, if the plastic is designed to replace another material in a long-lasting application, then plastic is good for the environment.
This picture shows my wonderful Sheba cutlery.
Note.
- C and I bought it in the 1960s, when we got married.
- Some have been used every day for over fifty years.
- The important bits are Sheffield stainless steel, with the handles formed of black Delrin plastic.
- Some of the handles have been in the dishwasher too many times and have faded.
- From what I have seen on the Internet, the average worth of pieces could be as much as a tenner.
Perhaps, when I pass on, all the pieces should be divided between my grandchildren.
I have digressed and I will return to my modelling project with one of ICI’s catalyst experts.
I remember him telling me, that if you could improve the way catalysts worked, you would open up whole new areas of chemistry.
It looks to me, that the scientists at Berkeley may have opened up a route to turn carbon dioxide into fuel.
Whether that is a good route to decarbonisation is another long discussion.
First-Of-Its-Kind Electriq Powder Manufacturing Plant To Be Built In Amsterdam
The title of this post, is the same as that of this article on Hydrogen Fuel News.
This is the sub-heading.
The powder plant can provide a safe end-to-end hydrogen solution.
The home page of their web site has this bold statement.
Meet the Safe & Practical Hydrogen Powder
Underneath is this explanation.
Electriq is a hydrogen carrier that acts like coffee powder for a coffee machine – simplifying storage, transport, and use of hydrogen in off-grid applications and long-term storage.
Similar processes have been proposed for hydrogen in the past, but no-one has compared them to coffee before.
This Technology page gives a lot more details.
These two paragraphs outline the chemistry used.
Electriq’s Fuel and Release technologies turn hydrogen into a coffee-like powder form, then back into electricity through a proprietary catalyst and release system.
Our hydrogenation process reacts hydrogen gas with KBO2 to produce a powdery coffee-like compound (KBH4), ready for easy storage and transportation. Our dehydrogenation process releases the hydrogen – and KBO2 as a by-product – thus forming a full cycle.
The Electriq Release system uses a proprietary catalyst to release hydrogen from the Electriq Fuel, after mixing it with water. The dehydrogenation (release) process provides fuel-cell grade hydrogen and zero-emissions electricity.
Note.
- KBO2 is a chemical compound formed of one potassium, one boron and two oxygen atoms.
- KBH4 is a chemical compound formed of one potassium, one boron and four hydrogen atoms.
- As is with often the case with these processes, It appears that there may be a clever catalyst doing some hard work.
The Technology page finishes with a comparison with other methods of transporting hydrogen.
This Press & Insights page has more information on the company and some interesting videos.
It would certainly be something new, if you filled up your electric bike with a canister of dry powder.
But they have a video of that!
Raven SR And Chart Industries To Work Together On Hydrogen And CO2 Capture
The title of this post, is the same as that of this article on the Carbon Herald.
These are the first two paragraphs.
Renewable fuels company Raven SR and Chart Industries announced they have signed a Memorandum of Understanding to work together on the liquefaction, storage, and transportation of hydrogen as well as pure CO2 produced from Raven SR’s non-combustion Steam/CO2 Reformation process that converts waste to renewable fuel.
Raven SR uses local waste as feedstock to produce transportation-grade H2 and synthetic fuels, including sustainable aviation fuel (SAF). The carbon dioxide, which is a byproduct of the process, when liquefied is used for food and beverage production, fertilizer production, and other consumer needs and as a feedstock for concrete or alternative fuels.
Note.
- It appears like I do, that the companies feel it is better to use carbon dioxide, rather than store it.
- It also looks like they have improved the steam reforming process for making hydrogen.
- An advantage of the process is that it doesn’t need pure water.
There is a video in the article, which I suggest you watch.
It may be one of those processes that dies a premature and messy death, but my knowledge of catalysts and strange ways to produce gases like hydrogen and acetylene from working at ICI in the early 1970s, tells me that someone will develop a viable route to create hydrogen, that is better than the methods used today,
New Nanomaterial Offers Efficient Hydrogen Production – Just Add Light
The title of this post, is the same as that of this article on Hydrogen Central.
These are the first two paragraphs.
A new nanomaterial catalyst needs only light to convert ammonia into hydrogen, its developers have said.
Made of inexpensive raw materials, the catalyst was developed by a team from Rice University in Texas, Syzygy Plasmonics Inc., and Princeton University in New Jersey.
I am not surprised, as I am a great believer in the power of catalysts.
In Hydrogen Fuel Cells Could Get A Lot Cheaper With Newly Developed Iron Catalyst, I wrote.
In the early 1970s, I worked with one of ICI’s catalyst experts and he said, that improvements in this area will be large in the future.
Increasingly, I see his prediction being proved right, in the varied fields, where catalysts are used.
It may be over fifty years ago, but then scientific truths don’t fade away and die. They just sit there quietly waiting to be rediscovered.
It is worth looking at the Syzygy Plasmonics web site.
Under a heading of Deep Decarbonisation For Chemical Manufacturing, this is their mission statement.
Syzygy is commercializing a deep-decarbonization platform dedicated to cleaning up the emissions-heavy chemical industry. We use breakthrough technology pioneered in the Laboratory for Nanophotonics at Rice University to harness energy from LED light to power chemical reactions. This new technology has the potential to partially or fully electrify the chemical industry, shifting it to renewable electricity, and cost-effectively reducing its carbon footprint.
The energy transition is here. The time to act is now.
That is some mission statement! But possibly one to expect from Houston.
Hydrogen Fuel Cells Could Get A Lot Cheaper With Newly Developed Iron Catalyst
The title of this post, is the same ass that of this article on Hydrogen Fuel News.
These are the first two paragraphs.
Scientists have been looking for an alternative to precious metals such as platinum for decades, in the hopes of bringing down the cost of hydrogen fuel cells.
An alternative to a platinum catalyst that costs considerably less will help to bring down the cost of hydrogen fuel cells and of using H2 as a carbon emission-free fuel. This would make it cheaper to both produce and use H2.
Researchers at the University of Buffalo, appear to be on the road to using iron as an affordable catalyst.
This paragraph describes he structure of the catalyst.
The researchers looked to iron because of its low cost and abundance. On its own, iron does not perform as well as platinum as a catalyst, particularly because it isn’t as durable in the face of highly corrosive and oxidative environments such as those within hydrogen fuel cells. The researchers bonded four nitrogen atoms to the iron in order to overcome that barrier, followed by embedding the material within a few graphene layers “with accurate atomic control of local geometric and chemical structures,” said Wu.
Gang Wu is leading the research.
In the early 1970s, I worked with one of ICI’s catalyst experts and he said, that improvements in this area will be large in the future.
Increasingly, I see his prediction being proved right, in the varied fields, where catalysts are used.
Welsh Firm Wins £300K BEIS Grant To Advance Hydrogen Fuel Tech
The title of this post, is the same as that of this article on Wales247.
This is the first two paragraphs.
A gasification pioneer aims to seal the UK’s low-carbon future after winning a Government grant worth nearly £300,000 to develop waste-to-hydrogen production technology, innovation funding specialist Catax can reveal.
Compact Syngas Solutions (CSS), based in Deeside, Wales, has secured £299,886 from the Department for Business, Energy and Industrial Strategy (BEIS) with the help of Catax. The funding comes from the Low Carbon Hydrogen Supply 2 Programme, which is part of the Net Zero Innovation Portfolio.
Note.
- The objective is produce syngas or green hydrogen from waste that would normally be sent to landfill.
- Syngas, or synthesis gas, is a fuel gas mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide.
- Syngas can be used as a fuel in internal combustion engines.
The name of the company; Compact Syngas Solutions could indicate that the company aim to have a compact system to produce syngas or green hydrogen.
I have come across other companies looking at waste diverted from landfill to create aviation fuel, diesel or hydrogen.
I have invested in one; Velocys, through the Stock Market, as I feel this area of technology will be big in the future.
Compact Syngas Solutions seem to have a different take. However like many other, I suspect catalysts are involved.
Conclusion
I think, this will be a company to watch.
Affordable Blue Hydrogen Production
The title of this post, is the same as that of this page on the Shell Catalysts & Technologies web site.
This is said at the top of the page.
Natural gas producers are at a crossroads. They face a shifting regulatory landscape emphasising emissions reduction and an economic environment where cash preservation is critical. Shell Catalysts & Technologies offers resource holders a phased approach to diversifying their portfolios towards clean hydrogen fuels by leveraging proven and affordable capture technologies and catalysts.
My knowledge of advanced chemical catalysts is small, but I did work in the early 1970s on a project with one of ICI’s experts in the field and he told me some basics and how he believed that in the future some new catalysts would revolutionise chemical process engineering.
Wikipedia’s definition of catalysis, or the action of catalysts is as follows.
Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst.
When I heard that Velocys were going to develop a catalyst-based system to turn household waste into sustainable aviation fuel, I did make a small investment in the company, as I thought the project could have legs.
Shell’s process takes natural gas and converts one molecule of methane (CH4) into two molecules of hydrogen (H2) and one of carbon dioxide (CO2) using one molecule of oxygen (O2) from the air.
In the Shell Blue Hydrogen Process, does a clever catalyst extract the carbon atom from the methane and combine it with two oxygen atoms to create a molecule of carbon dioxide? If it does, then this would leave the four atoms of hydrogen to form two molecules of H2 and the catalyst to go and repeat its magic on another methane molecule.
The video on the Shell site claims to do the conversion 10-25 % cheaper than current carbon intensive methods like steam reforming.
For every two molecules of hydrogen produced, both the Shell Blue Hydrogen Process and steam reforming will produce one molecule of carbon dioxide.
If you look at steam reforming it is an endothermic process, which means heat has to be added. The classic endothermic process is dissolving ice cubes in a glass of water.
Shell don’t say, but does their process need less energy to be added, because their clever catalyst does a lot of the work?
I wouldn’t be surprised if the reaction takes place in a liquid, with hydrogen and carbon dioxide bubbling out.
- The two gases would be separated by using their different physical properties.
- Carbon dioxide is heavier for a start.
Whatever Shell have done, it is probably pretty impressive and has probably taken many years to develop.
If as I suspect, it produces pure carbon dioxide, that would be an added bonus, as some uses of carbon dioxide wouldn’t want impurities.
Uses of pure carbon dioxide include.
- Feeding it to soft fruits, flowers, salad vegetables and tomatoes growing in large greenhouses.
- Dry ice.
- Mineral Carbonation International can use carbon dioxide to make building products like blocks or plasterboard.
- It can be added to concrete.
The more of the carbon dioxide that can be used rather than stored the better.
Study Suggests Solar Energy Can Be Cleanly’ Converted Into Storable Hydrogen Fuel
The title of this post, is the same as that, as this news item from Strathclyde University.
This section entitled Green Hydrogen, describes the research.
Most hydrogen is still made from natural gas, producing greenhouse gasses, and green hydrogen production is urgently needed. Green hydrogen is produced from water using a photocatalyst – a material which drives the decomposition of water into hydrogen and oxygen using sunlight.
The study, ‘Photocatalytic overall water splitting under visible light enabled by a particulate conjugated polymer loaded with iridium’ is published in Angewandte Chemie, a journal of the German Chemical Society. It suggests that using a photocatalyst under simulated sun light facilitates the decomposition of water when loaded with an appropriate metal catalyst – in this case iridium.
When used in a fuel cell, hydrogen does not emit any greenhouse gasses at the point of use and can help decarbonise sectors such as shipping and transportation, where it can be used as a fuel, as well as in manufacturing industries.
Using this photocatalyst may not be the final solution, but I do believe from my mathematical modelling of catalysts in an unrelated application in the 1970s, that this research could lead to an affordable way to create green hydrogen.
New Catalyst Extracts Hydrogen From Hydrogen Storage Materials More Efficiently
The title of this post, is the same as that of this article on Tech Explorist.
These are the first two paragraphs.
Hydrogen storage is a crucial enabling technology for advancing hydrogen and fuel cell technologies. One of the ways to store hydrogen is chemically. Chemical storage allows large amounts of hydrogen stored in small volumes at ambient temperatures.
However, for the hydrogen to be useful, catalysts are needed to activate LOHCs and release the hydrogen. This process is called dehydrogenation.
LOHCs are Liquid Organic Hydrogen Carriers.
The article describes how scientists at the Ames Laboratory have developed a new catalyst that doesn’t use metals or additives, that works at mild temperatures and under normal atmospheric conditions.
It does seem to me that LOHCs have a future, but given the sparseness of the Wikipedia entry, their widespread use may be some years away.
The Anonymous Widower 