Can we convert sodium bicarbonate into nano(size) type catalyst?
150.0 gms. of silica sol (pH 3.0-4.0 ) were diluted with water in a one liter beaker to provide a concentration of 27 % by weight. 204 grams of dilute aluminum chlorohydrol containing 23.7 grams of aluminum chlorohydrol and 180 grams of water were then added to the silica and stirred for ten minutes. 36.0 gms. of bicarbonate form IRA 67 regenerated with sodium bicarbonate were added and the resulting mixture was then heated to ˜85° C. with moderate stirring. The mixture was then allowed to cool . Then, 23.7 gms. of undiluted (concentrated) aluminum chlorohyrol were added and stirred for ˜ten minutes. An additional 36.0 gms. of the ion exchange resin were next added. The mixture was heated to 85° C. while stirring, then cooled to room temperature after which the resin was removed. The pH was 6.5 and the conductivity was 480 micromhos/cm. The liquid was then filtered through a standard 11 micron filter to remove any microgels. Sodium dodecylbenzene sulfonate (surfactant) in an amount equal to 7.5 pph of the solids to be treated was dissolved in 490 cc of water. Then 12.5 pph of solids of 03D phosphoric acid ester were added to the aqueous solution of the surfactant and stirred for ˜five minutes. Finally, the hydrous alumina-coated silica sol was added to the rapidly stirring mixture of surfactants and the resulting mixture was then spray dried in known manner at an inlet temperature of 400° F. and an outlet temperature of 200° F. to yield 180 gms of coated silica-NaHCO3 nano powder.
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