| 查看: 283 | 回复: 2 | |||
| 当前主题已经存档。 | |||
lovelva3000银虫 (小有名气)
揭露高校科研黑幕
|
[交流]
【请人翻译文章摘要（中译英）】+【有效期至2009年5月22日】，
|
||
|
采用浸渍法制备以活性Al2O3为载体的双组分催化臭氧化催化剂 Fe3O4-CoO/Al2O3，并利用该催化剂催化臭氧化降解2,4-滴丙酸。通过XRD对催化剂的催化活性进行研究，确定催化剂活性成分为Fe3O4和CoO。 实验比较了单独臭氧氧化，Al2O3催化臭氧氧化，Fe3O4-CoO/Al2O3催化臭氧氧化降解2,4-滴丙酸，水样COD的去除率分别为6.42%，17.55%，34.66%。结果表明，Fe3O4和CoO的掺入确实提高了Al2O3的活性。 实验还考察了吸附作用对催化效果的影响，结果表明COD的去除主要为催化臭氧氧化的作用。考察了pH对催化效果的影响，与单独臭氧化相比，该催化体系更加适合在酸性条件下应用。Fe3O4-CoO/Al2O3对水中臭氧具有明显的催化分解活性，其臭氧分解的速率常数达到3.370×10-3s-1，明显高于二次蒸馏水中单独臭氧的分解速率常数1.380×10-3s-1。 叔丁醇的试验结果表明，Fe3O4-CoO/Al2O3降解2,4-滴丙酸反应遵循羟基自由基(·OH)反应机理。与单独臭氧化相比，Fe3O4-CoO/Al2O3/O3体系的Rct有明显提高，表明催化臭氧化体系能产生更多的羟基自由基。 |
回复此楼» 猜你喜欢
全日制（定向）博士
已经有5人回复
-
假如你的研究生提出不合理要求
已经有10人回复
-
萌生出自己或许不适合搞科研的想法，现在跑or等等看？
已经有4人回复
-
Materials Today Chemistry审稿周期
已经有4人回复
-
参与限项
已经有3人回复
-
实验室接单子
已经有4人回复
-
对氯苯硼酸纯化
已经有3人回复
-
求助:我三月中下旬出站，青基依托单位怎么办？
已经有12人回复
-
所感
已经有4人回复
-
要不要辞职读博？
已经有7人回复
★ ★ ★ ★ ★ ★ ★ ★ ★ ★
lovelva3000(金币+10,VIP+0):我先看看 5-13 13:49
lovelva3000(金币+10,VIP+0):我先看看 5-13 13:49
|
太专业了，我用google帮你机器翻译了一下，不知是否有用 ＝＝＝＝＝＝下面是google机器翻译的＝＝＝＝＝＝＝＝＝ Prepared by impregnation using Al2O3 as the carrier in the activity of the two-component catalyst for catalytic ozonation. Fe3O4-CoO/Al2O3, and make use of the catalyst of ozone degradation of 2,4 - drop acid. Through the XRD of the catalytic activity of the catalyst for studies to determine the catalyst for the active ingredient for Fe3O4 and CoO. Experimental comparison of ozonation alone, Al2O3 catalyzed ozonation, Fe3O4-CoO/Al2O3 catalytic ozonation degradation of 2,4 - drop acid, the removal rate of COD in water samples were 6.42%, 17.55%, 34.66%. The results show that, Fe3O4 and CoO indeed increased the incorporation of the activity of Al2O3. Adsorption experiment also investigated the role of the catalytic effect, results showed that the COD removal is mainly the role of catalytic ozonation. Investigated the effect of pH on the catalytic impact as compared with ozonation alone, the catalytic system more suitable for application in acidic conditions. Fe3O4-CoO/Al2O3 of water has obvious catalytic ozone decomposition activity, the ozone decomposition rate constant to reach 3.370 × 10-3s-1, significantly higher than that of distilled water in a separate secondary ozone decomposition rate constant of 1.380 × 10-3s-1 . Tert-butyl alcohol test results show that, Fe3O4-CoO/Al2O3 Degradation of 2,4 - drop acid followed hydroxyl radical reaction (OH) Reaction Mechanism. Compared with single ozonation, Fe3O4-CoO/Al2O3/O3 system Rct have markedly improved, indicating that catalytic ozonation system to produce more hydroxyl radicals. |
2楼2009-05-13 05:04:14
jmc2009
银虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 342.6
- 散金: 616
- 帖子: 92
- 在线: 11.6小时
- 虫号: 781852
- 注册: 2009-05-29
- 性别: GG
- 专业: 电化学
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
lovelva3000(金币+20,VIP+0): 5-31 11:43
lovelva3000(金币+20,VIP+0): 5-31 11:43
|
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. 370×10-3s-1, significantly higher than that of separate ozone in secondary distilled water , 1. 380×10-3s-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. 一样的么  |
3楼2009-05-31 11:35:59