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ssg1234567銀蟲 (初入文壇)
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[求助]
有沒有用過陽離子交換樹脂的,請教一下!
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A solution of active silica is prepared by lowering the pH of a 0.54 wt% sodiumsilicate solution to 10-11 by progressive addition of cation exchange resin (Dualite C225-Na 14-52 mesh, from BDH Chemicals, converted into the acidform by repeated washing with HCl and water). 這是一個什么樣的過程?怎么操作?如果僅僅是調(diào)節(jié)PH的話,直接用HCl不就可以了嗎?用陽離子交換樹脂不就有點多余了嗎? |
金蟲 (正式寫手)
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