ringo
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Synthesis of Gold
Up to this point in time has gold been successfully synthesized yet? I know that was a huge motivator of alchemists of old.
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The_Davster
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Isotopes of gold have been sucessfully made by nuclear transmutation but no chemical method has been found.
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axehandle
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Mentionable is also, I think, that Au produced with transmutation is considerably more expensive than the mined variant. Particle accelerators
don't come cheap or use little power... 
My PGP key, Fingerprint 5D96 E09E 365D 1867 2DF5 C2FE 4269 9C19 E079 CD35
\"Verbing nouns weirds the language!\"
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sanity gone
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alchemy of old was based on the principal "he who can make gold owns the world." I don't believe gold has been created in a lab, but I
have heard of obtaining gold from antimony sulphide, although I don't believe it really. Here's a link
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axehandle
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I'm 100% sure Au has been produced in a lab, several times, through transmutation. Specifically by bombarding an element which I think was some
isotope of Pb with neutrons.
My PGP key, Fingerprint 5D96 E09E 365D 1867 2DF5 C2FE 4269 9C19 E079 CD35
\"Verbing nouns weirds the language!\"
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sanity gone
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I was sure silver was made through transmutation, but I didn't know about gold; I stand corrected I guess.
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axehandle
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Here is just one article about it, it was done for the first time in 1980 it seems:
http://chemistry.about.com/cs/generalchemistry/a/aa050601a.h...
My PGP key, Fingerprint 5D96 E09E 365D 1867 2DF5 C2FE 4269 9C19 E079 CD35
\"Verbing nouns weirds the language!\"
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Organikum
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Yes I made some gold last weekend by accident. I wanted to make an GOLEM again but I fucked something up with the amounts of philosophers stone added,
or perhaps the stone was not good anymore. So I got just a mini-GOLEM and some gold.
I was very pissed as GOLEMS - if they are big - are quite useful but gold is just nothing, too weak and soft.
Somebody got an idea how to make platinium though?
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kryss
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Transmogrification
All gold, all elements after Iron are produced by nucleosynthesis!
SUPERNOVAE!!
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darkflame89
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Correct, all nuclei after iron-56 cannot be formed by nuclear fusion. In fact such such nuclei are formed through nuclear fission. Some scienntists
are postulating that the reason why Earth contained such heavy nuclei after iron is due to our solar system being formed form the remnants of an old
supernova..
Ignis ubique latet, naturam amplectitur omnem.
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FrankRizzo
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sanity gone,
I'd be willing to bet good money that the gentleman in that article that you linked to had created iron sulfide ("fools' gold" and not actual gold. The fact that he was using antimony sulphide seems to agree with
this.
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Esplosivo
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FrankRizzo I doubt the iron sulphide has anything to do since he treated the mixture with strong acids, such as nitric and hydrochloric acid. The
sulphide would decompose. I would fine most probable that the alchemist has extracted real gold but from impure substances. Impurities of the gold
were probably extracted from the mixture by some complicated extraction techniques.
| Quote: |
0.476 grains of gold per 10 grams of silver employed
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As you can note the quantity of gold formed is somewhat small. It could be an impurity of the silver. Actually many metals, included 'raw'
metals such as copper etc... have gold in them. During purification of these metals Au, Pt etc... are collected.
Theory guides, experiment decides.
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al
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Artificial Gold from Silver
It exists several ways to produce artificial gold. The yield is low, but the interesting point is the feasibility of low energy nuclear transmutation.
- A process given by Roberto Monti
Mercury obtained from cinabar (HgS)
is put with aceti acid during months.
If you attack mercury with nitric acid, you will get a deposit of gold.
Pictures I made are here :
http://albert.cau.free.fr/English/Critical.html
If you do not want to spend too much nitric acid, distillate 90% of the mercury (but distillation of mercuy is dangerous)
- Transmutation of silver
I found the method in an old book (1650)
Melt the pure silver (negative gold test )
and drop it in a calcium hydroxyde milk.
Repeat the process several times.
As I observed, you may get golden silver the second run.
Attack the silver with nitric acid, separate the insoluble and attack it with agua regia (HNO3 + HCl), extract the gold using paper chromatography,
ethyl acetate as eluent, and use the appropriate reagent to detect gold : SnCl2, ... I use p-dimethylbenzylydenerhodanine : it gives a violet stain at
the front of the solvent.
You get the picture at my site :
http://albert.cau.free.fr/French/opinion.html
Important fatc is that you get better result if you you use around 100 g of silver. The last analysis has been made on 500 g of silver mixed with
copper (I used copper to decrease the content of silver of the metal submitted to transmutation), all the residues of silver have been melted, then
analyzed. The insoluble in nitric acid is black, important, ... it contains an appreciable concentration of gold. ... As soon as I get a RX equipment
for analysis, I will analyse the black deposit for other elements.
Silver from the filtrate is separate with copper wires.
It exists others ways to produce gold but, from a scientific point of view, both described methods appear very relevant of the feasibility of low
energy nuclear reactions.
I suggest one thing : Do the experiment with silver, then compare your result with other amateur scientists...
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kazaa81
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I think that mercury, because of its atomic mass near Au, could be used for a nuclear reaction to make gold...
Even if mercury is expensive, you would re-gain what you've spent.
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Mr. Wizard
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| Quote: | Originally posted by darkflame89
Correct, all nuclei after iron-56 cannot be formed by nuclear fusion. In fact such such nuclei are formed through nuclear fission. Some scienntists
are postulating that the reason why Earth contained such heavy nuclei after iron is due to our solar system being formed form the remnants of an old
supernova.. |
You have it half right. All elements after Iron 56 can be formed by fusion but without the release of energy, but they can be formed by fusion by
adding energy. So you are right about the heavier elements being formed in supernovae, but they ARE formed by fusion, just not giving out energy,
which is why the stars goes supernova in the first place.
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unionised
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"Even if mercury is expensive, you would re-gain what you've spent."
No. You wouldn't
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IrC
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IIRC I remember learning in school in the 50's that Hg was the first element turned into gold in a reactor, but the energy cost is so great it is
not worth it. If there was an alchemical way to make gold from cheap metals like lead then the quack sites out there would not be trying to gain your
money they would be busy making their own money.
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stygian
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somewhat on topic, somewhat off
anybody ever read about ORME (orbitally rearranged monoatomic elements)? Supposedly, the gold alchemists were trying to get was gold containing no
metallic bonding. Plenty of info on the net, some of it sounds feasible, some of it, who knows.
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12AX7
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| Quote: | Originally posted by stygian
anybody ever read about ORME (orbitally rearranged monoatomic elements)? Supposedly, the gold alchemists were trying to get was gold containing no
metallic bonding. Plenty of info on the net, some of it sounds feasible, some of it, who knows. |
Actually it's remarkably hard to find any information seperate from David Hudson. What little I've researched it hasn't really found
anything useful...
Tim
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Quibbler
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I'm pretty sure (but correct me if i'm wrong) that elements beyond 56Fe can be formed by fusion. Every nuclear particle added to 56Fe
contributes more than 8MeV to the binding energy so whats not to work. Even fusing heavier elements should work
7Li + 56Fe --> 63Cu
40 MeV + 500 MeV ---> 560 MeV
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neutrino
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Heavy elements <i>can</i> be formed by nuclear fusion, the point of the above posts was that this can't really happen in a star
because energy is not released and a star that contains mainly iron cannot continue fusion. Supernovae are the only things that can produce these
elements in large quantities.
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