利用過硫酸鈉氧化劑製備銅鹽之研究

A Study on the Preparation of Copper Salt by Oxidant of Sodium Persulfate

王炯元(Jiong-Yuan Wang)

指導教授 ： 蔡德華

國立臺北科技大學/工程學院/化學工程研究所/碩士(2007年)

摘要

本研究使用強氧化劑中的過硫酸鈉來製備氧化銅。實驗主要分為兩個步驟，首先必須找出過硫酸鈉溶液蝕銅的最佳濃度，此步驟的進行是改變不同濃度的過硫酸鈉溶液並固定攪拌速率、固定相同的溫度下，加入等量的銅粉進行反應成硫酸銅，每隔一段時間取出溶液分析銅含量，用來繪製溶解度曲線。以找出最大蝕銅量的過硫酸鈉濃度。
第二步再利用此濃度的過硫酸鈉製備成硫酸銅溶液，再加入不同濃度的氫氧化鈉溶液分別製備出氫氧化銅或氧化銅，藉由改變溫度和氫氧化鈉溶液的濃度來觀察氧化銅產率(%)的變化，進而找出在不同濃度比例與不同溫度下實驗而求得最佳產率(%)及最大產量(g)。發現在10℃下，以0.5N過硫酸鈉製備出之硫酸銅取50mL，加入1N氫氧化鈉50mL將可以得到產率(%)較高之氫氧化銅。而且在室溫下，以0.5N過硫酸鈉製備出之硫酸銅取50mL，加入10N氫氧化鈉50mL將可以得到產率(%)較高之氧化銅。但是純度(%)是以在60℃下，以0.75N過硫酸鈉製備出之硫酸銅取50mL，加入17N氫氧化鈉50mL為最高。

關鍵字

過硫酸鈉 ； 氫氧化鈉 ； 氧化銅 ； 硫酸銅 ； 氫氧化銅

並列摘要

In this research used strong oxidant, sodium persulfate, to prepare the cupric oxide. The experiment mainly divided into two steps, firstly we must find out the optimum concentration of sodium persulfate solution to dissolve the maximum quantity of copper, this step carried on different concentration of sodium persulfate solution, fixed rate of stir and the same temperature. In this condition, the reaction to produced cupric sulfate solution from added equivalent copper powder. Each period of time we took the solution to analyze the concentration of Cu2+ in order to plot the solubility curve. So we can get the optimum concentration of sodium persulfate solution.
Secondly we can use this concentration to prepare the cupric sulfate solution, and then we added the different concentration of sodium persulfate to prepare the cupric hydroxide or cupric oxide, then we can observe the change of cupric oxide yield rate by changing temperature and concentration of cupric hydroxide. Finally we can find out the optimum operation condition to get the optimum yield and maximum quantity. And we can find cupric sulfate which is produced by 0.5N sodium persulfate(50mL) adds into 1N sodium hydroxide (50mL) to be allowed to obtain cupric hydroxide of the best yield in 10℃. Moreover under the room temperature, we can find cupric sulfate which is produced by 0.5N sodium persulfate (50mL) adds into 10N sodium hydroxide(50mL) to be allowed to obtain cupric oxide of the best yield. But the hightest purity is mixture with cupric sulfate which is produced by 0.75N sodium persulfate (50mL)and 20N sodium hydroxide(50mL) in 60℃.

並列關鍵字

Sodium Persulfate ； Sodium Hydroxide ； Cupric Oxide ； Cupric Sulfate ； Cupric Hydroxide

參考文獻

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