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Palladium

All articles tagged with #palladium

science16 days ago

Ligand-guided remote desaturation converts simple aliphatic acids into gamma-lactones

Researchers report a ligand-enabled palladium-catalyzed method that activates distal γ-C(sp3)–H bonds in unbiased aliphatic carboxylic acids (from fatty and cyclic feedstocks) using designed O-allyl amido ester ligands, directly furnishing distal desaturated γ-lactones and double-desaturated γ-spirolactones. Mechanistic data support Pd(II)-mediated γ-C(sp3)–H activation, followed by dehydrogenation and intramolecular cyclization; the approach enables rapid assembly of biologically relevant scaffolds (e.g., muricatacin) from simple acids, offering a streamlined route to complex natural products and pharmaceuticals.

via Nature|
#c-h-activation#catalysis#chemistry
ISS Microbes Extract Platinum and Palladium From Meteorites
science4 months ago

ISS Microbes Extract Platinum and Palladium From Meteorites

Astronauts aboard the International Space Station used bacteria and the fungus Penicillium simplicissimum to bioleach platinum and palladium from L-chondrite meteorite samples. The experiments showed microgravity enhances the fungus’s metal uptake and release, making space-based bioleaching more effective than on Earth and highlighting a potential path toward mining valuable metals in space, alongside ongoing asteroid-mining efforts like TransAstra.

via Good News Network|
#bioleaching#meteorites#palladium
Precious Metals Market: Gold Retreats, Palladium Hits 5-Year Low
commodities2 years ago

Precious Metals Market: Gold Retreats, Palladium Hits 5-Year Low

Gold prices retreated to a two-week low as the safe-haven rally driven by Middle East tensions lost momentum, with investors shifting focus to interest rate cues from Federal Reserve officials. Palladium also hit a five-year low, dropping 4.5%, due to concerns of a structural surplus next year and substitution from palladium to platinum. The decline in gold prices suggests reduced investor concerns about geopolitics. Traders also analyzed mixed economic data from China.

via CNBC|
#commodities#federal-reserve#geopolitics
"Palladium boosts superconductor performance"
science3 years ago

"Palladium boosts superconductor performance"

Scientists from TU Wien and universities in Japan have used computer simulations to identify palladium as the optimal material for achieving the highest transition temperatures in superconductors. Palladium's weaker electronic interaction compared to nickel and copper places it in the "golden zone" of medium interaction, making it a promising candidate for creating even better superconductors. The research could usher in a new "age of palladates" in superconductivity research and revolutionize the way we generate, transport, and use electricity.

via Phys.org|
#materials-science#palladium#quantum-physics
Gold prices fall on hawkish Fed and strong economic data.
commodities3 years ago

Gold prices fall on hawkish Fed and strong economic data.

Gold prices fell sharply on Friday and were headed for their worst week in eight as hawkish remarks by U.S. Federal Reserve officials through the week bolstered bets for at least one more interest rate hike and buoyed the dollar. Bullion has shed about 1.2% so far this week, pressured by the dollar's gains overall, which made bullion more expensive for overseas buyers. Platinum surged 2.7% to an over one-year high at $1,122.80, while palladium gained 1.1% to $1,604.74, on track for its best week since November.

via Reuters|
#commodities#federal-reserve#gold