Making Copper(Cupric) Chloride or Copper Oxide(CuO)?

[Marine12320]

I am looking for a easy way to make Copper(Cupric) Chloride or Copper Oxide(CuO). Either works. If anyone has any suggestions, please reply to this post.

 

 

 

 

I am thinking of putting copper into a hydrogen peroxide solution. Will that make copper oxide(CuO)?

[John Cuthber]

Heating copper to red heat in air will coat it with the oxide (mainly CuO, some Cu2O). Quenching it in water will make a lot of the oxide fall off as flakes. With a bit of copper pipe, a gas stove and a bucket of cold water you should be able to make some quite easily. If you want a lot this will get tedious.

Adding copper compounds to H2O2 generally makes it decompose to water and O2 - not a lot of use.

What do you want the stuff for? If it's for colouring flames then the quality of the product from heating copper in air is probably good enough.

[Marine12320]

Well i may try to make copper oxide as you described. But how long do i need to heat it for? just until it turns black?

 

 

Also, would you know a way to produce copper(cupric) chloride?

[chao129]

when you heat copper, it won't turn black until its cool again. just heat it until it starts to glow

[Marine12320]

Oh ok. I might try that method. I also heard about heating copper filings on a stove until they turn black. Will that work?

 

 

 

P.S. Anyone know a way to make Copper Chloride?

[YT2095]

I make my copper salts (and oxide) from the carbonate starting point.

effectively made from a soluble copper salt (nitrate in my case) and potassium carbonate you can use sodium carbonate too.

heating the dry copper carbonate will give you your black copper oxide

[turbosnigel]

Add NaOH to a CuSo4 solution and you will get a precipitate of Cu(OH)2 witch decomposes to CuO upon heating

 

To get CuCl2 you could (Slowly, risk of toxic Cl2 gas liberation) add H2O2 to a Copper in HCL(aq) or

Add CaCl2 to a sociometric amount of CuSo4 to get CuCl2 and insoluble gypsum ppt and CuCl2(aq)

[Theophrastus]

A rather simple way to make copper chloride, is to start with copper oxide, which can easily be obtained by heating of pure copper in air (I recommend use of the powdered metal, if you have some, for this). While copper does not generally react with most weaker strong acids (I know, an oxymoron), copper oxide, you can easily react with hydrochloric acid, to produce Copper chloride, as shown below.

 

CuO + 2HCl > CuCl2 + H2O

 

In regards to obtaining copper oxide, you can also heat copper hydroxide, and this will decompose to form copper(II)oxide and water at a relatively low temperature, or if you have a stronger burner, perhaps even a bunsen burner, you can use copper carbonate as well, decomposing to form copper(II)oxide and CO2. Hope this helps!

[hermanntrude]

the decomposition of copper hydroxide even works in boiling water. We did that in the labs the other day.

[Madhusoodan Gaonkar]

I have read a paper on the conversion of CuCl₂ to CuO (Thin films ) at just by heating at 350C. Is that possible ?

 

Reference : J Mater Sci: Mater Electron (2013) 24:1004–1011

[John Cuthber]

In air, especially if it's moist, that's plausible.

Why do you ask?

[Madhusoodan Gaonkar]

Thank you very much John

According to Wikipedia such things won't happen. Could you give chemical reaction please? I wanted to find out the reason for the formation of Belloite (CuOHCl).

[smhjn17]

You may add copper wire to hydrogen peroxide and add hcl ull get cucl2

Then for cuo.. Electrolyse nacl solution with copper electrodes and filter out the ppt obtained(cu(oh)2 and cu2o) ....heat this ppt for long until u obtain black cuo