Terephthalic Acid → 13427-80-0
Reaction equation
[C:1]([OH:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.[OH-].[K+:14]>O>[C:1]([O-:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O-:8])=[O:7])=[CH:4][CH:3]=1.[K+:14].[K+:14]Participants
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
The procedure of Example 1 was employed with the following exceptions. 24.75 grams of terephthalic acid were added to a solution of 18.89 grams of potassium hydroxide in 200 grams of distilled water, slowly and with heating and stirring to form potassium terephthalate, and then 41.17 grams of potassium carbonate were dissolved in the solution. 6.16 grams of potassium dichromate were dissolved in 100 grams of water, and this solution was added to the solution of potassium terephthalate to form the solution for spray drying. 50 grams of the resulting co-crystallite powder from the spray drying step was then dry blended with 31.7 grams of 90 percent potassium hydroxide powder in the Waring blender. The resulting dry pyrolysis product weighed 5.7 grams, had a BET surface area of 1680 square meters per gram, and contained 30 percent of chromia (Cr2O3) by weight, based on the weight of the pyrolysis product. Two percent of the chromia had an average crystallite size of 80 Å, with the remainder having an average crystallite size below 35 Å.
Workup
- temperatureslowly and with heating
Sources & evidence
- ORD record
- ord-556b905672d54b64b96251982cc5bfe1
- Source dataset
- uspto-grants-1984_11
- Patent number
- US04482641
Reaction notes
Loading…