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nsdcsj

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lovelva3000(½ð±Ò+10,VIP+0):»¹ÓÐ2¶Î°¡ 5-15 18:27
With immersion method, we prepare the two-constituent ozonization catalyst Fe3O4-CoO/Al2O3, in which Al2O3 works as carrier, and we use the catalyst to ozonize and degrade dichlorprop. Studied the catalysis activation via XRD, we confirm the activating constituents are Fe3O4 and CoO.
2Â¥2009-05-15 13:54:43
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nsdcsj

Òø³æ (СÓÐÃûÆø)

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lovelva3000(½ð±Ò+10,VIP+0):»¹ÓÐ2¶ÎŶ 5-15 18:27
We tested the ozonizing degradation of dichlorprop with different systems: only ozone, Al2O3 catalyzed and Fe3O4-CoO/Al2O3 catalyzed ozonization, and the removal of the COD of water was 6.42%£¬17.55%£¬34.66% respectively. This result tells the addition of Fe3O4 and CoO does increase the activity of Al2O3.
3Â¥2009-05-15 14:03:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ustcrat

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lovelva3000(½ð±Ò+5,VIP+0):µÚÈý¶Î·­ÒëÁËû°¡£¿ 5-18 11:32
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Results from experiment on tertiary butyl alcohol demonstrated that the degradation reaction of Fe3O4-CoO/Al2O3 on 2,4-drops monoprop follows the reaction mechanism of hydroxide radical freeradical. Compared to the invididual ozonization, Rct in Fe3O4-CoO/Al2O3/O3 system increases significantly, indicating that catalytic ozonization system will produce more hydroxide radical freeradical.

[ Last edited by ustcrat on 2009-5-15 at 19:35 ]
4Â¥2009-05-15 19:32:32
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jmc2009

Òø³æ (СÓÐÃûÆø)

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lovelva3000(½ð±Ò+25,VIP+0): 5-31 11:42
qingfeng877680(½ð±Ò+0,VIP+0):»³ÒÉÄãºÍÂ¥Ö÷Ö®¼ä·Ç·¨×ªÒƽð±Ò£¬Çë×ö³ö½âÊÍ¡£ 6-9 14:23
With immersion method, we prepare the two-constituent ozonization catalyst Fe3O4-CoO/Al2O3, in which Al2O3 works as carrier, and we use the catalyst to ozonation and catalytic ozonation dichlorprop. Studied the catalysis activation via XRD, we confirm the activating constituents are Fe3O4 and CoO.
        We tested the ozonation of dichlorprop with different systems: only ozone, Al2O3 catalyzed and Fe3O4-CoO/Al2O3 catalyzed ozonization, and the removal of the COD of water was 6. 42%,17. 55%,34. 66% respectively. This result tells the addition of Fe3O4 and CoO does increase the activity of Al2O3.
        Investigation also investigated the influence of adsorption to catalytic effect, the result showed that COD removal is mainly the role of catalytic ozonation. Seeing about the effect of pH on the catalytic impact, compared with ozonation alone, the catalytic system more suitable for application in acidic conditions. To the ozone in water, Fe3O4-CoO/Al2O3 has obvious catalytic decomposition activity, the rate constant of ozone decomposition reach to 3. 370¡Á10-3s-1, significantly higher than that of separate ozone in secondary distilled water , 1. 380¡Á10-3s-1.
The results of the investigation of t-butanol indicated that the Fe3O4-CoO/Al2O3 catalyzed ozonation of dichlorprop followed a radical-type mechanism. Compared to the invididual ozonization, Rct in Fe3O4-CoO/Al2O3/O3 system increases significantly, indicating that catalytic ozonization system will produce more hydroxide radical freeradical.

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5Â¥2009-05-31 11:35:25
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