Discovery of a Catalyst that changes carbon dioxide to fuels

Question: From which of the following element researchers have made a new catalyst that turns carbon dioxide into the fuel gases?
(a) Ruthenium
(b) Platinum
(c) Copper
(d) Palladium
Answer: (a)
Related facts:

  • The Engineers at the Stanford University have developed a new catalyst that helps to turn carbon dioxide from cars into fuels like propane or natural gas.
  • Catalysts induce chemical reactions without being used up in the reaction.
  • In this new research scientists have combined ruthenium and iron oxide nano particles to form the new catalyst.
  • The ruthenium nuggets sit in the core of the catalyst surrounded by an outer sheath of iron.
  • This arrangement activates the hydrocarbon formation from Carbon-Dioxide.
  • This method produces propane and other higher hydro carbons including natural gas.
  • The earlier methods invented so far have only produced the simplest hydrocarbon methane from effluents of vehicles.
  • Also, earlier methods involve two steps of processes, they first reduce carbon dioxide to carbon monoxide and then the second step involves combining carbon monoxide and hydrogen to form hydrocarbons.

Links:
https://currentaffairs.gktoday.com/a-new-catalyst-to-convert-carbon-dioxide-into-natural-gas-102019319246.html
https://www.energysociety.org/
https://news.stanford.edu/2019/10/17/new-catalyst-helps-turn-carbon-dioxide-fuel/