Polystyrene sulphonic acid resins, as some of the most important solid acid catalysts, have been widely studied. However, the influence of the morphology on their acid strength—closely related ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their ...

Pour 1kg of sulphonic acid in a bucket, add a relatively small amount of water and stir vigorously until the black colour turns into a white lather. To mix the sulphuric acid (the black solution ...

Among them was perfluorooctane sulphonic acid, or PFOS, a substance banned in Switzerland since 2010. The study authors took blood and urine samples from 789 healthy people aged between 20-69 in ...