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大比目魚銅蟲 (小有名氣)
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[求助]
摘要翻譯 高分子降解相關(guān)（一）
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雙功能離子液體催化PET聚酯降解研究 摘要：分別在180℃、190℃條件下，以[NH2Mim]IM、[NH2Mim]Br、[NH2Mim]OH離子液體做催化劑，乙二醇做為溶劑，降解廢棄的聚對苯二甲酸乙二醇酯(PET)。研究結(jié)果發(fā)現(xiàn)，[NH2Mim]IM離子液體催化劑在190℃條件下降解效果最好，產(chǎn)物容易分離，轉(zhuǎn)化率及產(chǎn)率都很高；[NH2Mim]OH離子液體催化劑次之；[NH2Mim]Br離子液體催化劑效果不好且粘度大不宜取用。再改變PET樣品的種類，在最理想的條件下對三種樣品進行降解。研究結(jié)果發(fā)現(xiàn)，樣品三的降解效果最好。 關(guān)鍵詞：離子液體; PET;醇解 |
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pcmagic
至尊木蟲 (文壇精英)
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【答案】應(yīng)助回帖
★ ★
大比目魚: 金幣+2, ★★★很有幫助, 雖然沒有題目和關(guān)鍵詞，依然非常感謝！ 2013-07-31 12:35:46
大比目魚: 金幣+2, ★★★很有幫助, 雖然沒有題目和關(guān)鍵詞，依然非常感謝！ 2013-07-31 12:35:46
| Degradation of waste polyethylene terephthalate (PET) was studied at 180℃, 190℃ respectively with ionic liquids[NH2Mim]IM, [NH2Mim]Br, [NH2Mim]OH as catalyst, and ethylene glycol as solvent. [NH2Mim]IM demonstrated the best degradation effect at 190℃ with the advantages of easy separation of product and high rate of conversion and yield, [NH2Mim]OH being the next in terms of degradation effect. [NH2Mim]Br was not an appropriate choice because of its low catalyzing efficiency and high viscosity. Three different PET samples was degraded under the most favourable conditions with sample 3 showing the best degradation effect. |
4樓2013-07-04 10:25:45
【答案】應(yīng)助回帖
★ ★
book2005593: 金幣-2, 違規(guī)存檔, 此為百度翻譯結(jié)果，本版禁止機器翻譯應(yīng)助，請勿再犯~ 2013-07-03 08:22:18
book2005593: 金幣-2, 違規(guī)存檔, 此為百度翻譯結(jié)果，本版禁止機器翻譯應(yīng)助，請勿再犯~ 2013-07-03 08:22:18
| Respectively at 180 ℃, 190 ℃, [NH2Mim]IM, [NH2Mim]Br, [NH2Mim]OH ionic liquid as catalyst, ethylene glycol as solvent, degradation of waste polyethylene terephthalate (PET). Results showed that the best [NH2Mim]IM, ionic liquid catalyst degradation at 190 ℃ effect, easy separation of product, conversion rate and yield are very high; the [NH2Mim]OH ionic liquid catalyst; [NH2Mim]Br ionic liquid catalyst effect is not good and the viscosity should not be used. Then change the kinds of PET samples, for degradation of three kinds of samples under ideal conditions. The results showed the best effect, three sample degradation. |
2樓2013-06-25 12:58:43
book2005593
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3樓2013-07-03 08:20:33
【答案】應(yīng)助回帖
★ ★ ★
大比目魚: 金幣+3, 翻譯EPI+1, ★★★很有幫助 2013-07-31 12:34:31
大比目魚: 金幣+3, 翻譯EPI+1, ★★★很有幫助 2013-07-31 12:34:31
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Investigation on glycolysis of PET catalyzed by dual task special ionic liquids Abstract: Under the condition of 180℃ or 190℃ respectively, waste polyethylene terephthalate(PET) was glycolyzed using ethylene glycol as solvent and ionic liquids as catalyst such as [NH2Mim]IM, [NH2Mim]Br and [NH2Mim]OH. The results showed that the effect of glycolysis of PET catalyzed by [NH2Mim]IM at 190℃ is best, the product was separating easily, conversion and yield are high; Followed by [NH2Mim]IM; The effect of glycolysis of PET catalyzed by [NH2Mim]Br ionic liquid is bad, the catalyst with high viscosity was difficulty to access. Under the ideal conditions, three samples was glycolyzed changing the kinds of PET. The results showed that the effect of glycolysis of sample three is best. Key words: Ionic liquids; PET; Glycolysis |
5樓2013-07-13 22:34:53
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