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ouyangwj新蟲 (小有名氣)
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[求助]
您好,請(qǐng)教一下,我做銅鋁水滑石,沉淀ph值控制在10左右,然... 已有1人參與
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您好,請(qǐng)教一下,我做銅鋁水滑石,沉淀ph值控制在10左右,然后滴定,滴定過程中顏色一直都是淺藍(lán)色,但經(jīng)過老化后,顏色就發(fā)灰了,洗滌過程可以明顯觀察到洗出一層灰黑色的物質(zhì)(洗滌過程中會(huì)出現(xiàn)分層,淺藍(lán)色沉淀居多,表面會(huì)出現(xiàn)一層灰黑色的東西)…想請(qǐng)教一下您,這可能是什么原因,非常感謝~ @zyhou 發(fā)自小木蟲Android客戶端 |
專家顧問 (文壇精英)
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專家經(jīng)驗(yàn): +3748 |
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In a typical procedure, calculated amount of Co(NO3)2·6H2O (10–40 mmol), Al(NO3)3·9H2O (10 mmol), (AR, Sinopharm Chemical Reagent Co. Ltd., China) were dissolved together in 200 mL deionized water. This mixed solution is referred to as solution A. Solution B was a 100 mL mixture of 25 mmol Na2CO3 and 80 mmol NaOH (AR, Sinopharm Chemical Reagent Co. Ltd., China) with concentrations of 0.25 and 0.8 mol/L. Solutions A and B were simultaneously added dropwise into a glass reactor under vigorous stirring at room temperature and the pH value of solution was kept at 8.5. 歡迎參考! Fuel,Volume 233,1 December 2018,Pages 565-571 |
新蟲 (小有名氣)
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對(duì)了,我的碳酸根插層離子用得比較少,是根據(jù)金屬離子的量,按水滑石的公式計(jì)算的,可能剛剛夠,或者過量一點(diǎn)點(diǎn),不知道這個(gè)是否有影響~求各位大神指教 @zyhou 發(fā)自小木蟲Android客戶端 |
至尊木蟲 (著名寫手)

新蟲 (小有名氣)
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