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| 本帖产生 1 个 翻译EPI ,点击这里进行查看 | |||
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NY_sky捐助贵宾 (著名写手)
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[求助]
一小段翻译,翻译不好,金币奉上。请大神帮帮忙,多谢多谢。
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| 中文:图1为ACST化学改性过程可能发生的化学反应。根据ACST的结构特点,加入氢氧化钠不仅可以增加吸附剂中羟基的数量,还可以使吸附剂结构膨胀,增加吸附剂的孔隙率和比表面积。加入巯基乙酸的目的是引入大量的巯基。巯基易与铜离子发生配位反应形成Cu-S键,它(Cu-S键的形成)会在吸附剂表面形成开放式网状结构的官能团。硫化钠的滴入会使吸附剂表面的开放式网状结构的官能团转变为封闭式网状结构,这样会使吸附剂表面产生更多的硫(元素),硫具有与重金属离子很强结合的能力,同时,它也是吸附剂表面上主要活性反应位点。 |
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818james
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【答案】应助回帖
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NY_sky: 金币+100, ★★★★★最佳答案, 来晚了,多谢你的帮助,两人应助,一人一半,金币奉上。 2016-12-09 23:25:32
NY_sky: 金币+100, ★★★★★最佳答案, 来晚了,多谢你的帮助,两人应助,一人一半,金币奉上。 2016-12-09 23:25:32
|
中文:图1为ACST化学改性过程可能发生的化学反应。根据ACST的结构特点,加入氢氧化钠不仅可以增加吸附剂中羟基的数量,还可以使吸附剂结构膨胀,增加吸附剂的孔隙率和比表面积。加入巯基乙酸的目的是引入大量的巯基。巯基易与铜离子发生配位反应形成Cu-S键,它(Cu-S键的形成)会在吸附剂表面形成开放式网状结构的官能团。硫化钠的滴入会使吸附剂表面的开放式网状结构的官能团转变为封闭式网状结构,这样会使吸附剂表面产生更多的硫(元素),硫具有与重金属离子很强结合的能力,同时,它也是吸附剂表面上主要活性反应位点。 Figure 1 illustrates the possible reactions in the chemical modification of ACST. Owning to the structure of ACST, (adding) NaOH can not only increase hydroxyl groups in the absorbent, but also swell the absorbent, increase its porosity and specific surface area. The mercaptoacetic acid added is to introduce a large amount of sulfydryl groups which can yield Cu-S bonds by coordination reaction with Cu ions , leading to an open network of functional groups on the absorbent’s surface. The open network can be changed to a closed one by sodium sulfide and so hold more sulfur (element). Sulfur has a strong affinity for heavy metal ions, and is also the main active site on the surface of the absorbent. |
6楼2016-12-09 15:45:31
shansusu
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2楼2016-12-07 22:59:00
genhunter
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【答案】应助回帖
|
中文:图1为ACST化学改性过程可能发生的化学反应。根据ACST的结构特点,加入氢氧化钠不仅可以增加吸附剂中羟基的数量,还可以使吸附剂结构膨胀,增加吸附剂的孔隙率和比表面积。加入巯基乙酸的目的是引入大量的巯基。巯基易与铜离子发生配位反应形成Cu-S键,它(Cu-S键的形成)会在吸附剂表面形成开放式网状结构的官能团。硫化钠的滴入会使吸附剂表面的开放式网状结构的官能团转变为封闭式网状结构,这样会使吸附剂表面产生更多的硫(元素),硫具有与重金属离子很强结合的能力,同时,它也是吸附剂表面上主要活性反应位点。 Figure 1 illustrates the possible chemical reaction in the chemical modification process. According to the structural feature of ACST, the treatment with NaOH can not only increase the amount of hydroxyl groups in the absorbent, it can also cause the absorbent to swell, which increases the porosity and the specific surface area. The purpose of the addition of mercaptoacetic acid is to introduce a large amount of sulfydryl groups. The sulfydryl groups can readily form Cu-S coordination complex, which forms an open network of functional groups on the surface of the absorbent. The addition of sodium sulfide transforms the open network to a closed network, which leads to the formation of many sulfur (element) on the surface of the absorbent. Sulfur has a strong affinity to heavy metal ions, it is also the main reaction center on the surface of the absorbent. |

3楼2016-12-08 07:44:03
genhunter
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爱与雨下: 金币+1 2016-12-09 07:17:47
NY_sky: 金币+100, 翻译EPI+1, ★★★★★最佳答案, 来晚了,多谢你的帮助,两人应助,一人一半,金币奉上。 2016-12-09 23:25:19
爱与雨下: 金币+1 2016-12-09 07:17:47
NY_sky: 金币+100, 翻译EPI+1, ★★★★★最佳答案, 来晚了,多谢你的帮助,两人应助,一人一半,金币奉上。 2016-12-09 23:25:19
|
略为改了下 Figure 1 illustrates the possible chemical reaction in the chemical modification process for ACST. According to the structural feature of ACST, the treatment with NaOH can not only increase the amount of hydroxyl groups in the absorbent, it also causes the absorbent to swell, which increases the porosity and the specific surface area. The purpose of the addition of mercaptoacetic acid is to introduce a large amount of sulfydryl groups. The sulfydryl groups can readily form Cu-S coordination complex, which forms an open network of functional groups on the surface of the absorbent. The addition of sodium sulfide transforms the open network to a closed network, which leads to the formation of many sulfur (element) on the surface of the absorbent. Sulfur has a strong affinity to heavy metal ions, it is also the main reaction center on the surface of the absorbent. |

4楼2016-12-08 08:44:57







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