| 9 | 1/1 | 返回列表 |
| 查看: 1834 | 回復(fù): 8 | |||
kfwangguan木蟲 (小有名氣)
|
[交流]
【請教】請教一下這個(gè)生長晶體的奇怪方法到底是什么?謝謝 已有2人參與
|
|
我們都知道一般晶體的生長方法有諸如 solvent evaporation,solution diffusion,hydrothermal conditions 等等,但是我看的這個(gè)文獻(xiàn)上面說的合成方法里有rotorary evaporator 還有 centrifugation 什么的,里面加入有機(jī)溶劑分離沉淀的步驟又像是 decantation . 最后長出晶體那一步說的也不詳細(xì) 不知道什么長出來的。如果歸納他的合成方法是不是應(yīng)該叫做solvent evaporation 呢?如果不是那應(yīng)該叫做什么? 謝謝大家 幫忙分析一下最后長出晶體用的是什么方法? A mixture of a and b in 9 mL of water was refluxed for 45 min, after which the volume of the solution was reduced to half on a rotorary evaporator. Addition of 5 mL of ethanol to the solution led to the formation of an orange precipitate of c, which was separated by filtration. Addition of a few drops of ethanol to the filtrate led to the formation of a fine yellow-orange powder, which was identified as a mixture of compounds and was separated after centrifugation. In the resulting solution, pale-yellow needle crystals of d appeared in a few hours. [ Last edited by kfwangguan on 2010-8-24 at 13:14 ] |
捐助貴賓 (著名寫手)

|
rotorary evaporator 應(yīng)該是旋轉(zhuǎn)蒸發(fā)儀,主要用于在減壓條件下連續(xù)蒸餾大量易揮發(fā)性溶劑。對萃取液的濃縮和色譜分離時(shí)的接收液的蒸餾,可以分離和純化反應(yīng)產(chǎn)物。 centrifugation應(yīng)該是用離心機(jī)分離吧,在做水溶液時(shí)用到過,當(dāng)時(shí)是為了分離溶液中的沉淀,調(diào)節(jié)溶質(zhì)的PH值,觀察生長變化,這篇文獻(xiàn)里可能只是分離。 |
木蟲 (小有名氣)
木蟲 (正式寫手)
小木蟲之小藥蟲

金蟲 (小有名氣)
木蟲 (著名寫手)
| 9 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 求材料調(diào)劑 +8 | 隔壁陳先生 2026-03-12 | 8/400 |
|
|---|---|---|---|---|
|
[考研] 311求調(diào)劑 +4 | 冬十三 2026-03-18 | 4/200 |
|
|
[考研] 一志愿985,本科211,0817化學(xué)工程與技術(shù)319求調(diào)劑 +7 | Liwangman 2026-03-15 | 7/350 |
|
|
[考研] 286求調(diào)劑 +6 | lemonzzn 2026-03-16 | 9/450 |
|
|
[考研] 266求調(diào)劑 +5 | 陽陽哇塞 2026-03-14 | 9/450 |
|
|
[考博] 環(huán)境領(lǐng)域全國重點(diǎn)實(shí)驗(yàn)室招收博士1-2名 +3 | QGZDSYS 2026-03-13 | 5/250 |
|
|
[考研] 265求調(diào)劑 +3 | 梁梁校校 2026-03-17 | 3/150 |
|
|
[考研] 268求調(diào)劑 +6 | 簡單點(diǎn)0 2026-03-17 | 6/300 |
|
|
[考研] 326求調(diào)劑 +5 | 上岸的小葡 2026-03-15 | 6/300 |
|
|
[考研] 考研化學(xué)學(xué)碩調(diào)劑,一志愿985 +4 | 張vvvv 2026-03-15 | 6/300 |
|
|
[考研] 有沒有道鐵/土木的想調(diào)劑南林,給自己招師弟中~ +3 | TqlXswl 2026-03-16 | 7/350 |
|
|
[考研] 一志愿211 0703方向310分求調(diào)劑 +3 | 努力奮斗112 2026-03-15 | 3/150 |
|
|
[考研] 0703一志愿211 285分求調(diào)劑 +5 | ly3471z 2026-03-13 | 5/250 |
|
|
[考研]
|
笨笨兔子 2026-03-12 | 3/150 |
|
|
[考研] 材料080500調(diào)劑求收留 +3 | 一顆meteor 2026-03-13 | 3/150 |
|
|
[考研] 學(xué)碩285求調(diào)劑 +13 | Wisjxn 2026-03-12 | 46/2300 |
|
|
[考研] 266求調(diào)劑 +4 | 學(xué)員97LZgn 2026-03-13 | 4/200 |
|
|
[考研] 求調(diào)劑 +3 | 程雨杭 2026-03-12 | 3/150 |
|
|
[考研] 328化工專碩求調(diào)劑 +4 | 。,。,。,。i 2026-03-12 | 4/200 |
|
|
[考研] 一志愿山大07化學(xué) 332分 四六級已過 本科山東雙非 求調(diào)劑! +3 | 不想理你 2026-03-12 | 3/150 |
|