2. Experimental
2.1. Catalyst preparation
Phenol (99.8%), acetone (99.9%) and ethanol (99.5%) were
purchased from Tianjin Reagent Company (China). AlCl3 (97.0%),
FeCl3 (99.0%), SnCl2 (98.0%), ZnCl2 (98.0%) were purchased
from Tianjin Guangfu Company (China).
A strong acidic ion-exchange resin (Amberlyst-15, Rohm and
Haas Company) was washed by ethanol and deionized water with
the speed of 15 cm/min until the effluent was colorless, and was
subsequently dried in an oven for 24 h at 70 8C. Certain amount of
ZnCl2 was dissolved in ethanol to produce different concentrations
(w/w); then 5 g of treated ion exchange resin was added into the
ZnCl2 solution (100 mL) and kept for 6 h at room temperature.
Finally the modified catalyst was washed with deionized water
until no Cl exists in the solution, and then was dried in a vacuum
oven for 48 h at 70 8C.
The preparation of AlCl3, FeCl3 and SnCl2 modified catalysts
employed the same procedure as that of ZnCl2 modified one
mentioned above.
2.2.
2. Experimental
2.1. Catalyst preparation
Phenol (99.8%), acetone (99.9%) and ethanol (99.5%) were
purchased from Tianjin Reagent Company (China). AlCl3 (97.0%),
FeCl3 (99.0%), SnCl2 (98.0%), ZnCl2 (98.0%) were purchased
from Tianjin Guangfu Company (China).
A strong acidic ion-exchange resin (Amberlyst-15, Rohm and
Haas Company) was washed by ethanol and deionized water with
the speed of 15 cm/min until the effluent was colorless, and was
subsequently dried in an oven for 24 h at 70 8C. Certain amount of
ZnCl2 was dissolved in ethanol to produce different concentrations
(w/w); then 5 g of treated ion exchange resin was added into the
ZnCl2 solution (100 mL) and kept for 6 h at room temperature.
Finally the modified catalyst was washed with deionized water
until no Cl exists in the solution, and then was dried in a vacuum
oven for 48 h at 70 8C.
The preparation of AlCl3, FeCl3 and SnCl2 modified catalysts
employed the same procedure as that of ZnCl2 modified one
mentioned above.
2.2.
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2. Experimental
2.1. Catalyst preparation
Phenol (99.8%), acetone (99.9%) and ethanol (99.5%) were
purchased from Tianjin Reagent Company (China). AlCl3 (97.0%),
FeCl3 (99.0%), SnCl2 (98.0%), ZnCl2 (98.0%) were purchased
from Tianjin Guangfu Company (China).
A strong acidic ion-exchange resin (Amberlyst-15, Rohm and
Haas Company) was washed by ethanol and deionized water with
the speed of 15 cm/min until the effluent was colorless, and was
subsequently dried in an oven for 24 h at 70 8C. Certain amount of
ZnCl2 was dissolved in ethanol to produce different concentrations
(w/w); then 5 g of treated ion exchange resin was added into the
ZnCl2 solution (100 mL) and kept for 6 h at room temperature.
Finally the modified catalyst was washed with deionized water
until no Cl exists in the solution, and then was dried in a vacuum
oven for 48 h at 70 8C.
The preparation of AlCl3, FeCl3 and SnCl2 modified catalysts
employed the same procedure as that of ZnCl2 modified one
mentioned above.
2.2.
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