Saved Bookmarks
| 1. |
Define the following terms : (i) Shape-selective catalysis (ii) Kraft temperature (iii) Peptisation |
|
Answer» Solution :(i) Shape-selective catalysis The catalytic reaction that depends upon the pore structure of the catalyst and the size of the reactant and product MOLECULES is called shape-selective catalysis. For example, zeolites are good shape-selective catalysts because of their honeycomb-like structure. (ii) Kraft temperature The formation of micelles can TAKE place above a particular temeperature. This temperature is called Kraft temperature. (iii) Peptisation The process of converting a PRECIPITATE into COLLOIDAL sol by shaking it with DISPERSION medium in the presence of a small amount of electrolyte is called peptisation. |
|