Oil purification is not new, but has never really delivered a product that industry was happy with. Now there’s a chemical process, using nanoporous materials to chemically scrub oxidants and moisture from used oil. Although the process is still under development the results so far have been promising.

I came across a paper in “Machinery Lubrication” compiled by G. Majano, I. Partono, H. H. Jensen and S. Mintova, that discusses the techniques and results of oil purification using nanoporous sorbents in detail: