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Black Phosphorus
[rquote=470300&tid=12196&author=Dan Vizine][rquote=468151&tid=12196&author=MrHomeSci ...
28-3-2017 at 07:04
by: Fleaker
Chemglass products - what are the thoughts on the quality of their products?
I like Chemglass.

They hook up glassblowers so go through distributor if you can.
6-3-2017 at 13:17
by: Fleaker
Molten Europium
Dan,

Your Ta looks really dark to me. Are you sure it isn't molybdenum?

I work with many forms ...
19-2-2017 at 07:48
by: Fleaker
The art of crystallization
This was a fun thread to read!

I need to do some crystallization work on K2TaF7.

I've been c ...
10-2-2017 at 18:08
by: Fleaker
Platinum foil suggestions needed
Perhaps way more valuable as that foil to the right people than even 0.1 mm Pt sheet!
16-1-2017 at 12:00
by: Fleaker
The problem with niobium
You think Nb is crazy? Ta is way way more resistant. Nb is much easier to reduce too.

Take some ...
16-1-2017 at 11:57
by: Fleaker
Silver sulfate

I used to take silver sulfate (and chloride too) by the kilogram and mix with dilute (5-10%) sulfu ...
16-1-2017 at 11:35
by: Fleaker
Recovery of Palladium from PdCl2 with NaBH4 or Formic acid?
Hydrogen will rapidly reduce it.

Failing that, pH 5 boiling sodium formate solution.

Regards,
16-1-2017 at 11:27
by: Fleaker
Quartz and molten sodium nitrite
35% w/v H2O2 usually works OK with powdered tungsten.

If more aggressive conditions needed, mayb ...
24-12-2016 at 11:16
by: Fleaker
Ostwald style nitric production
PGMs get no love :-/

Sad state that platinum prices are at now.
22-12-2016 at 13:00
by: Fleaker
Ostwald style nitric production
What about just absorbing some chloroplatinic acid onto aerogel or molecular sieve and reducing it w ...
22-12-2016 at 10:20
by: Fleaker
Quartz and molten sodium nitrite
if it's just tungsten or tungstic acid, just use hydrogen peroxide and skip the HF.
22-12-2016 at 10:16
by: Fleaker
Production of nickel, copper and silver as potassium cyanide
Silver I think yes. I don't know about the others.
21-12-2016 at 09:10
by: Fleaker
Ostwald style nitric production
I know that at large silver refineries (like that of Eastman Kodak) where they dissolve metric tons ...
21-12-2016 at 09:08
by: Fleaker
Mad Scientist of the Year Award - some pictures
Wow! Such good work all! Aga, really really nice job!

21-12-2016 at 09:01
by: Fleaker
Quartz and molten sodium nitrite
Can't say I've ever tried this. What temperature do you need to be at? Pretty sure the aqueous nitri ...
21-12-2016 at 08:59
by: Fleaker
Mad Scientist of the Year Award #2
all great choices!
9-12-2016 at 11:56
by: Fleaker
WHO you are our only hope
As a Type I diabetic, I would like to learn how to make my own insulin, preferably a human insulin s ...
9-12-2016 at 07:55
by: Fleaker
Anyone interested in purchasing rhodium or ruthenium sponge? Your budget is the limit!
[rquote=467785&tid=70960&author=Melgar][rquote=467605&tid=70960&author=Fleaker]Have ...
29-11-2016 at 23:07
by: Fleaker
Barium Animus
The mask is the way to go. I like it for melting platinum as well.

Dan, we burn acetylene and oxy ...
27-11-2016 at 13:18
by: Fleaker
Anyone interested in purchasing rhodium or ruthenium sponge? Your budget is the limit!
Have you personally seen this to be the case? I can't say that my experience with Ru in hypochlorite ...
27-11-2016 at 13:13
by: Fleaker
Help Buying Platinum Leaf
[rquote=467156&tid=70847&author=careysub][rquote=467145&tid=70847&author=Fleaker]Can ...
24-11-2016 at 08:44
by: Fleaker
Barium Animus
Dan, do you need some quartz tubing?

I have a lot of spare 25IDX30 mm OD GE 214 tubing. Bit heavy ...
24-11-2016 at 08:35
by: Fleaker
Anyone interested in purchasing rhodium or ruthenium sponge? Your budget is the limit!
Depending on the particle size of the sponge, it may go into refluxing HBr or HCl/Cl2 over the cours ...
24-11-2016 at 08:30
by: Fleaker
Help Buying Platinum Leaf
Can't you just take a 1 g bar and roll it out to sheet? They roll really really well.

I guess I s ...
21-11-2016 at 12:27
by: Fleaker
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