this post was submitted on 13 Apr 2025
48 points (100.0% liked)

Science

4178 readers
8 users here now

General discussions about "science" itself

Be sure to also check out these other Fediverse science communities:

https://lemmy.ml/c/science

https://beehaw.org/c/science

founded 3 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] ornery_chemist@mander.xyz 1 points 4 days ago

Apparently this particular catalyst is pitched as an H2 evolution catalyst by oxidizing alcohols... can anyone with access to the article tell me where that energy comes from (thermo- or electrocatalytic)? IIRC alcohol dehydrogenation is endothermic by like 15-20 kcal/mol. A 1->2 reaction has an entropy change of ~30 eu, so quick math and dirty looks from p-chemists gives an operating temperature somewhere around 300 °C. That's quite a bit better than conventional crackers but still requires significant thermal encouragement...