How oil turns to acid sludge

时间:2019-03-02 09:20:00166网络整理admin

THE oil in many of the world’s largest reserves, such as the oil sands of Canada and Venezuela, has degraded over millions of years from light, easy-to-use molecules into an acidic, tarry residue that is hard and costly to refine. Until now, geologists have been unsure whether oxygen was required for the degradation, or whether anaerobic degradation is also important. But now, researchers at the University of Newcastle upon Tyne in the UK have found anaerobic degradation products called reduced 2-naphthoic acids in samples from every one of the 40 heavy-oil basins they sampled around the world (Nature, vol 431,