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salaisons-dijonnaises.fr

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About Sabatier

Sabatier produces a range of charcuterie products in Burgundy.

Sabatier Headquarters Location

Rue Aspirant Buffet

Dijon, 21000,

France

+33 03.80.78.78.00

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Latest Sabatier News

It’s not just rocket science – hidden chemistry powers Moon launches and sustains life in space

Sep 4, 2022

It’s not just rocket science – hidden chemistry powers Moon launches and sustains life in space By Curtis Ho, University of Tasmania Tasmania, Sep 4 (The Conversation) Many around the world will watch eagerly this Saturday as NASA launches Artemis I, the agency’s first Moon exploration mission since the 1970s.The spectacle involves the most powerful rocket in the world: the Space Launch System (SLS). Standing at nearly 100 metres tall and weighing more than 2,600 tonnes, the SLS produces a massive 8.8 million pounds of thrust – (more than 31 times the thrust of a Boeing 747 jet).But it’s not just amazing engineering that’s behind rocket science and space exploration. Hidden within, there’s clever chemistry that powers these fantastic feats and sustains our fragile life in space.The fuel and the spark To launch a rocket into space, we need a chemical reaction known as combustion. This is where fuels are combined with oxygen, producing energy as a result. In turn, that energy provides the push (or thrust) needed to propel mammoth machines like the SLS into Earth’s upper atmosphere and beyond.Much like cars on the road and jets in the sky, rockets have engines where combustion takes place. SLS has two engine systems: four core stage RS-25 engines (upgraded space shuttle engines) and two solid rocket boosters. And chemistry is what provides a unique fuel mixture for each engine.The core stage engines use a mixture of liquid oxygen and liquid hydrogen, whereas the solid rocket boosters, as the name suggests, contain a solid propellant – a hard, rubber-like material called polybutadiene acrylonitrile. In addition to being fuel itself, this material contains fine particles of aluminium metal as fuel, with ammonium perchlorate as the oxygen source.While fuel for the solid rocket boosters is easily stored at room temperature, the core stage engine fuels need to be stored at -253 degree Celsius for liquid hydrogen and -183 degree Celsius for liquid oxygen. That’s why you see sheets of ice shearing off rockets upon liftoff – the fuel vessels are so cold, they freeze moisture from the surrounding air.But there’s another bit of interesting chemistry that happens when we need to light the fuel. Depending on the fuel source, rockets can be ignited electrically through a glorified spark plug… or chemically.If you’ve ever watched a space launch and heard talk about “TEA-TEB ignition”, that’s referring to triethylaluminium and triethylborane. These two chemicals are pyrophoric – meaning they can catch fire spontaneously when exposed to air.Sustaining life amongst the stars It’s not just rockets that are fuelled by chemistry. Life support systems in space rely on chemical processes keeping our astronauts alive and breathing – something we on Earth often take for granted.We all know the importance of oxygen, but we also exhale carbon dioxide as a toxic waste product when we breathe. So, what happens to carbon dioxide in the sealed environment of a space capsule like the ones in the Apollo Moon missions or on the International Space Station (ISS)? Remember Tom Hanks trying to fit a square peg into a round hole in the movie Apollo 13? Those were carbon dioxide scrubbers that NASA used for removing this toxic gas from the interior of space capsules.These scrubbers are expendable filters packed with lithium hydroxide (similar to a chemical you can find in drain-cleaning fluid) that capture carbon dioxide gas through simple acid-base chemistry. While these scrubbers are highly efficient in removing carbon dioxide and allowing astronauts to breathe easy, the filters have a finite capacity. Once saturated, they are no longer effective.So, for extended space missions, using lithium hydroxide filters is not feasible. Scientists later developed a system that uses a reusable carbon dioxide scrubber made with minerals called zeolites. With zeolite, the captured carbon dioxide can be released into space, and the filters are then free to capture more gas.But in 2010, scientists found an even better way to manage carbon dioxide, by turning this waste product into another essential component to life: water.From waste to resource The Environmental Control and Life Support System on the ISS replaces carbon dioxide scrubbers with the Carbon Dioxide Reduction System, also known as the Sabatier system. It’s named after the chemical reaction central to its function, which in turn is named after its discoverer, 1912 Chemistry Nobel Prize winner Paul Sabatier.This system combines carbon dioxide with hydrogen gas to form water and methane. The methane gas is vented into space, and through a process called hydrolysis, the water is split into breathable oxygen and hydrogen gas. The latter is then recycled to transform more carbon dioxide into water.This process is not just useful for space exploration. Closer to home, chemists are researching similar systems to potentially address greenhouse gas emissions – while it’s no panacea, the Sabatier reaction could help us recycle some carbon dioxide here on Earth.Meanwhile, NASA’s Artemis Moon mission aims to land the first woman and person of colour on the Moon and establish a long-term human presence in a lunar base. The Sabatier reaction and other little-celebrated chemical processes will be key to humankind’s continued space endeavours. (The Conversation) AMS AMS

Sabatier Acquisitions

1 Acquisition

Sabatier acquired 1 company. Their latest acquisition was Euro Dispal on September 18, 2019.

Date

Investment Stage

Companies

Valuation
Valuations are submitted by companies, mined from state filings or news, provided by VentureSource, or based on a comparables valuation model.

Total Funding

Note

Sources

9/18/2019

$99M

Acquired

1

Date

9/18/2019

Investment Stage

Companies

Valuation

$99M

Total Funding

Note

Acquired

Sources

1

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