Study On Lumping Kinetic Model For Catalytic Disproportionation Of Rosin On Pd/C Catalyst

Disproportionated rosin prepared by authors were analyzed by domestic made 1102 GC and UV spectrophotometers. It shows that the resin acids in disproportionated rosin can be determinated precisely and completely by GC. According to product standard ZB B720002-84, Abietic acid and dehydroabietic acid in products were determinated by two different UV spectrophotometers; the results had evident deviation because of the different slot. TU-1901 UV spectrophotometer which has width of slot from 0.1～ 30nm was better than WFZ-UV2100 spectrophotometers which has fixed width 5nm slot. Abietic acid and dehydroabietic acid can be determinated in some concentration range by UV spectrophotometer, the range of abietic acid is concluded from 0.05%～4.88%,the dehydroabietic acid from 41.1%～ 50.9%,but it is a simple and rapid method.Disproportionated rosin was prepared by taking rosin as material, 200~# oil...