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donkeyhonesty82鐵桿木蟲 (小有名氣)
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[求助]
求翻譯中文摘要!
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以2,6-二叔丁基苯酚(DTBP)為原料通過亞硝化反應(yīng)、還原反應(yīng)合成2,6-二叔丁基-4氨基苯酚(DTBAP)。通過單因素試驗(yàn)系統(tǒng)考察了反應(yīng)工藝條件得出:(1)亞硝化反應(yīng):以95%乙醇為溶劑,以濃鹽酸為酸化試劑,亞硝酸鈉用量為DTBP摩爾量1.25~1.50倍,反應(yīng)溫度為15~20 ℃,反應(yīng)時(shí)間2.0~2.5 h,產(chǎn)品收率達(dá)90%以上;(2)還原反應(yīng):以連二亞硫酸鈉為還原劑,在50~55 ℃下反應(yīng)60 min,連二亞硫酸鈉用量為2,6-二叔丁基-4亞硝基苯酚摩爾數(shù)的2.8倍及以上,產(chǎn)品收率可達(dá)到92%以上。本制備方法操作簡單,反應(yīng)條件溫和、易于控制,產(chǎn)物易于分離,產(chǎn)品總收率較高,反應(yīng)原料廉價(jià)、容易采購,生產(chǎn)成本較低,適合于工業(yè)化生產(chǎn)。 翻譯成英文,本人英文寫作不地道。謝謝啦! |

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We take the 2,6--di-tert-butyl phenol (DTBP) as raw material. After the nitrosation reaction and the reduction reaction, we could get the di-tert-butyl-4-aminophenol (DTBAP). Through the single factors test system, we consider the condition of reaction technology, and get the conclusion: (1) the nitrosation reaction: we can get the products at the rate up to 90% above, if we make 95% ethanol as the solvent, thick hydrochloride as acidification reagents; the amount of the sodium nitrite is 1.25~1.50 times of the Moore volume of the DTBP, the reaction temperature between 15 and 20; reaction time is 2.0~2.5 h. (2) the reduction reaction: we can get the products at the rate up to 92%, if we make the sodium dithionite as the reductant, the reaction temperature between 50 and 55; the amount of the sodium dithionite is more than 2.8 times of the Moore volume of 2,6-di-tert-butyl-4-nitrosophenol. The preparation method is simple, of a mild reaction conditions, easy to control and easy to separate the products, of high total yield, cheap and easy to get the raw materials, low production costs. So it is suitable for industrial production. 把大概句型句意都表達(dá)出來了。望樓主滿意! ![]() |
鐵桿木蟲 (小有名氣)

鐵桿木蟲 (小有名氣)

鐵桿木蟲 (小有名氣)

榮譽(yù)版主 (文壇精英)
非線性控制領(lǐng)域新人一枚
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專家經(jīng)驗(yàn): +178 |
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