  Pristine graphene is thought lack of catalytic activity up to date, although
using graphene-plus-heteroatom materials as catalysts has become a subject of
intensive research because it can be metal saving, eco-friendly and ultimately
sustainable. Here we report observations of catalytic reactions of
high-quality, clean, pristine graphene when immersed into organics containing
C=O bonds, like acetone, acetic acid and acetaldehyde. The C=O bonds were found
to break and form polymers including polyethers. The reaction rate is highly
temperature dependent. The reaction products mainly physically adsorb on
graphene and do not cause increase of defect density in graphene, hence
graphene retains its intrinsic properties. This new catalysis shall not only
find practical importance but also deepen our understanding on the role of
graphene in all graphene based catalysis.
