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Zirconium Tertiary Butoxide

Zirconium Tertiary Butoxide - Chemistry Forum

Zirconium Tertiary Butoxide - Chemistry Forum. Discuss chemical reactions, chemistry.


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  #1  
Old 02-08-2004, 03:54 AM
Bala
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Default Zirconium Tertiary Butoxide



I would like to know any methods of preperation of Zr tert-butoxide by
starting from Zirconium Metal. All the methods I have seen so far use
ZrCl4, and I can't use that. Would the preparation be similar to that
of the preparation of Aluminium-tert-butoxide? I use Al metal,
Tertiary Butyl Alcohol, with Mercury(II) Chloride as catalyst.
Also, would like to know about the suitability of this compound in a
MOCVD coating coating process as a precursor.
Thanks in advance
Bala
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  #2  
Old 02-08-2004, 09:33 PM
Bruce Sinclair
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Default Zirconium Tertiary Butoxide

In article <[Only registered users see links. ] >, [Only registered users see links. ] (Bala) wrote:

As an aside, what is this stuff used for ? I found an ancient bottle
of it in the lab during rennovations ... but no one seemed to know
what it was for ... or want it. We thought it may have been used for
coating something (as you suggest above) ... but what and why escaped
us at the time

Thanks

Bruce

-----------------------------------------------------------------------
It was so much easier to blame it on Them. It was bleakly depressing to
think that They were Us. If it was Them, then nothing was anyone´s fault.
If it was Us, what did that make Me ? After all, I´m one of Us. I must be.
I´ve certainly never thought of myself as one of Them. No-one ever thinks
of themselves as one of Them. We´re always one of Us. It´s Them that do
the bad things. <=> Terry Pratchett. Jingo.
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  #3  
Old 02-09-2004, 12:05 PM
Bala
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Default Zirconium Tertiary Butoxide

> As an aside, what is this stuff (Zirconium Tert Butoxide) used for ? I found an ancient bottle

Bruce,
I am doing this as a research project to see if it can work in an
MOCVD process, which is used to coat thin Metal Nitride/Carbide films.
The compound is only a precursor. It should ionise at about 300 C to
form Zr ions, which then bond with Nitrogen(say) forming a thin
coating of ZrN on the object to be coated. That is how it would be
used. The ZrN would act as a hard coating on the object.
I am not sure, but I think I read something which says that the same
compound is used in coating of sunglasses(Cant remember for sure
though, and if wrong please do correct me)

Bala

P.S: Good to see Terry Pratchett fans out there!
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  #4  
Old 02-09-2004, 06:14 PM
hanson
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Default Zirconium Tertiary Butoxide

"Bala" <[Only registered users see links. ]> wrote in message
news:f9e7293b.0402071954.1bfa693f@posting.google.c om...

"Bruce Sinclair" <bruce.sinclair@NOSPAMagresearch.NOTco.NOTnz>
in message news:62xVb.21764$[Only registered users see links. ].net...

"Bala" <[Only registered users see links. ]> wrote in message
news:f9e7293b.0402090405.78ea0332@posting.google.c om...
[hanson]
Interesting.
==>[1] Several Zr-alcoxides are commercially available.
Get free samples from DuPont, Monsanto, etc. (Check google.)
They'll send you voluminous detailed R&D, and application info
along with it too.

==>[2] Zr-alcoholates were introduced large scale when
Spec Mil-C-5541 allowed and urged (due to green shit paranoia)
to replace Chromate CrO4 coatings by/with Sn,Ti, and Zr-OR films.
The Alcoholates are very sensitive to water (hydrolysis) and were
replaced soon by water soluble ZrSiF6 or ~ZrO(NH4HCO3)2.
These silicofluorides and the ammonium carbonate complexes do
have an acceptable shelf life when, as sold, in concentrated form.
They were/are mainly used in "formulations" and applied in very
diluted form to metal surfaces, for further processing, whereon
they produce nano- and mono layers of ZrO2, TiO2 or SnO2.
Industry calls these layers "conversion coatings". Mega$ biz!
The substrates (Fe, Al, Cu alloys) that these conversion coatings
are applied to are for the purpose of providing a "paint base",
meaning a surface to which the paint securely adheres, and to
impart an increased corrosion resistance to the metal part which
may be in your refrigerator, car, or aircraft, etc.

AFAIK none of the CrO4 replacement conversion coatings has yet
achieved the corrosion resistance, the economy and the ease of
application combination that the original CrO4 afforded. **** enviros!

==>[3] Dunno, but your suggestion(!) for using ZrOBut to produce
ZrN is beckoning but I doubt that it will work in the presence of C, H,
and O. You'll probably get CVD-films of ZrO2 which if you are lucky
may ppt and xx in form of cubic Zirconia, the "almost" diamond stuff.

Enjoy chemistry and **** enviros!
hanson



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  #5  
Old 02-11-2004, 05:29 PM
karry
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Default Zirconium Tertiary Butoxide

[Only registered users see links. ] (Bala) wrote in message news:<f9e7293b.0402071954.1bfa693f@posting.google. com>...

hiya!! deja vu??
i am currently preparing zr tert butoxide using teritiary butyl
alcohol +zr +aluminium isopropoxide heat it with boiling add mercuric
chloride mixture turns milky white &then supposedly black.. currently
under preparation.. more on the same tomorrow.. it might work.. hail
u!!
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  #6  
Old 02-12-2004, 06:51 AM
Bala
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Default Zirconium Tertiary Butoxide

> hiya!! deja vu??


WOW!
I am doing the same thing. Right now, my thing might be a day behind
yours. Right now, it is already black. But I have no idea if
Zr-tert-butoxide is what comes out. The final product is a yellow
liquid, b.p=45-55 celcius. Tell me if it works.
Thanks for the info.
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butoxide , tertiary , zirconium


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