Wednesday , May 25 2022

UTA researchers find a cheaper, less energy-intensive way to purify ethylene



IMAGE: Rasika Dias, a distinguished UTA university professor of chemistry and biochemistry
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Credit: UTA

Researchers at the University of Texas in Arlington have filed a temporary patent application on a new copper compound that can be used to purify ethylene to use as a raw material when producing plastics such as polyethylene or PVC, as well as other industrial compounds.

Ethylene is produced from crude oil but is usually obtained as a mixture that includes ethan. Manufacturing processes that use ethylene usually require pure ethylene feedstock stock, or 99.9 per cent.

"Existing technologies to separate ethylene and ethan use huge amounts of energy and require high levels of capital investment," said Rasika Dias, a remarkable UTA professor of chemistry and biochemistry.

"Our new technology uses a copper compound that can safely absorb ethylene in the solid state, leaving ethane out, with the minimum amount of energy release," he added.

The ethylene absorption of the newly discovered copper complex is easily reversible, so the ethylene can be discharged and can be recovered using lightweight or weight changes, resulting in the regeneration of the Combined copper complex, which can be reused several times.

"As a result, our new technology is extremely sustainable and energy efficient, and it could be a real development in separating olefines such as ethylene and propylene of paraffins, which currently accounts for 0.3 percent of world energy consumption -aang, which is equivalent to the annual energy consumption of Singapore, "says Dias.

The researchers have reported their new technology in the international journal Angewandte Chemie, in the article "Low net heat of ethylene assugno carried out by a large structural reorganization of copper copper state separately." The paper describes how the release of a very low level of heat during the absorption process is the result of the structural reorganization of the copper complex when exposing to ethylene.

Congratulated Fred MacDonnell, chairman of UTA chemistry and biochemistry, Dias on the development of this new technology.

"Dr Dias and his colleagues have taken the challenge of improving one of the most relevant chemical differences, and one needs for multiple industrial processes and the production of products used throughout our everyday lives," he said. MacDonnell. "This could have very important implications for the costs associated with the production of these products, and also improving the environmental impact significantly by reducing the emitted heat to & # 39 ; r atmospheric. "


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