Showing posts with label News. Show all posts
Showing posts with label News. Show all posts
Recently, Researcher from Cardiff University and Lehigh University announced that a gold-palladium alloy catalyst had leaded to a successful direct production of hydrogen peroxide. The experiment showed very high selectivities of more than 95%, which are now comparable to the indirect process, and that makes a direct process a lot more feasible and viable.
The researchers believe that they have the solution to overcome hydrogen peroxide decomposition after being formed, as shown by the previous catalyst used in direct process of hydrogen peroxide. The process works by applying an acid pre-treatment to the carbon support before the gold-palladium alloy nanoparticles are placed on it, thus making smaller metal particles which can block the decomposition reaction.
The experiment results looked promising because the mainstream uses of hydrogen peroxide require concentration level of 3 to 8%. However, it is unclear whether the reaction can be scaled up to industrial scale.
Currently, hydrogen peroxide is industrially produced through indirect process that contains of hydrogenation and oxidation of anthraquinone.
Evonik Industries’ Active Oxygen has successfully expanded its hydrogen peroxide plant in Barra do Riacho, Brazil to 70,000 tons per year, as reported in H2 Daily last week.
Active Oxygen utilized Evonik technology to expand its existing hydrogen peroxide production facility.
Active Oxygen’s hydrogen peroxide plant has operated since the mid of 1990s. (h2daily.com)
Hydrogen peroxide is responsible for killing bacteria when they come into the cells. Hydrogen peroxide is started to be produced as the response of the immune system to the bacteria.
Level of hydrogen peroxide produced is controlled by Peroxiredoxin molecule, as figured out by scientists from Wake Forest University School of Medicine. After the bacteria is killed, Peroxiredoxin will go back to its normal state.
Source: upi.com
Level of hydrogen peroxide produced is controlled by Peroxiredoxin molecule, as figured out by scientists from Wake Forest University School of Medicine. After the bacteria is killed, Peroxiredoxin will go back to its normal state.
Source: upi.com
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