Dechlorination agent and preparation method thereof
A dechlorination agent and active technology, applied in the field of organic chloride dechlorination agents, can solve the problems of low cost, single activity, low content, etc., and achieve the effect of improving the dechlorination capacity
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Embodiment 1
[0016] Dissolve 7.2 g of NaOH in 370 ml of deionized water, 16.8 g of Ca(NO 3 ) 2 .4H 2 O and 5.1 g Fe(NO 3 ) 3 .9H 2 O was dissolved in 320 ml of deionized water, stirred vigorously in a water bath at 30°C, until the solution was mixed into a uniform phase, and titrated with the above-mentioned NaOH solution, the titration speed was controlled at 10 ml / min, after the precipitation was complete, the obtained precipitates were sequentially deionized Wash with ion water and absolute ethanol, put it in an oven at 120°C, dry it for 20 hours, take it out, put it in a muffle furnace, and roast it at 500°C for 8 hours to obtain the dechlorination agent of the present invention. Its composition is CaO and Ca 2 Fe 2 o 5 .
Embodiment 2
[0018] Dissolve 7.3 g of NaOH in 370 ml of deionized water, 12.7 g of Ca(NO 3 ) 2 .4H 2 O and 10.1 g Fe(NO 3 ) 3 .9H 2 O was dissolved in 320 ml of deionized water, stirred vigorously in a water bath at 100°C, until the solution was mixed into a uniform phase, and then titrated with the above-mentioned NaOH solution at a rate of 20 ml / min. Wash with ion water and absolute ethanol, put it in an oven at 50°C, dry for 48 hours, take it out, put it in a muffle furnace, and roast it at 600°C for 4 hours to obtain the dechlorination agent of the present invention. Its composition is CaO and Ca 2 Fe 2 o 5 .
Embodiment 3
[0020] Dissolve 7.5 g of NaOH in 370 ml of deionized water, 4.3 g of Ca(NO 3 ) 2 .4H 2 O and 20.3 g Fe(NO 3 ) 3 .9H 2 O was dissolved in 320 ml of deionized water, stirred vigorously in a water bath at 50°C, and the solution was mixed into a uniform phase, and then titrated with the above-mentioned NaOH solution, and the titration speed was controlled at 10 ml / min. Wash with ionized water and anhydrous methanol, put it in an oven at 120°C, dry for 20 hours, take it out, put it in a muffle furnace, and roast it at 600°C for 4 hours to obtain the dechlorination agent of the present invention. Its composition is Fe 2 o 3 with CaFe 2 o 4 .
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