2<\/sub> emissions.<\/p>\nChristoph Ramashen, Professor from the Institute of Materials Chemistry at TU Wien. Said: “We are interested in the so-called reverse water-gas shift reaction. In this process, carbon dioxide and hydrogen are converted into water and carbon monoxide. You can then process the carbon monoxide further, for example, into methanol, other chemical base materials or even into fuel.”<\/p>\n
Although not a novel reaction, this type of method has never been utilised for industrial use, requiring exceptionally high temperatures to occur, which consequently breaks down catalysts, with the scientist’s new perovskite cocktail successfully providing the answer.<\/p>\n
“We tried out a few things and finally came up with a perovskite made of cobalt, iron, calcium and neodymium that has excellent properties,” says Rameshan.<\/p>\n
The perovskite is made up of a crystal structure, which enables specific atoms to migrate through it; for example, cobalt atoms during catalysis travel towards the surface and create nanoparticles, which become especially chemically active.<\/p>\n
Simultaneously, oxygen vacancies form \u2013 these are points within the crystal where oxygen atoms should sit. These vacant positions are the particular points that C02<\/sub> molecules dock efficiently, which is crucial for becoming dissociated into oxygen and carbon monoxide.<\/p>\nRameshan explained: “We were able to show that our perovskite is significantly more stable than other catalysts. It also has the advantage that it can be regenerated: If its catalytic activity does wane after a certain time, you can simply restore it to its original state with the help of oxygen and continue to use it.”<\/p>\n
“It is more expensive than other catalysts, but only by about a factor of three, and it is much more durable. We would now like to try to replace the neodymium with something else, which could reduce the cost even further.”<\/p>\n
In theory, carbon dioxide would have to be concentrated to remove C02<\/sub> from the atmosphere; however, developing these technologies would require a substantial amount of energy. Consequently, it is more efficient to convert C02 <\/sub> where it is produced in large quantities, meaning places like industrial power plants would yield additional benefits.<\/p>\n“You could simply add an additional reactor to existing plants that currently emit a lot of C02<\/sub>, in which the C02<\/sub> is first converted into C0 and then processed further,” added Rameshan.<\/p>\n","protected":false},"excerpt":{"rendered":"The development of a novel perovskite catalyst may potentially pioneer new technology in the battle against C02 emissions.<\/p>\n","protected":false},"author":15,"featured_media":10923,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[24433,785],"tags":[3478,689,3258,3365],"acf":[],"yoast_head":"\n
Lowering C02 emissions through the use of a new perovskite catalyst<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n \n \n \n \n \n\t \n\t \n\t \n