If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #1617
Joined: Fri Aug 01 2008, 07:31AM
Location: Adelaide, South Australia
Posts: 139
Hi all,
Im in the process of designing a small electrolysis cell to produce chlorate presently, and have some questions.
I will be using graphite anodes, I remember reading somewhere, that the rate of disintegration of graphite anodes can be reduced by treating them whith linseed oil first. How does this work? From what I could gather, the oil fills the gaps in the porous structure of the graphite, if so are there any other treatment methods?
Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843
I've never used graphite to make chlorate (I did make some KClO3 using a MMO anode from a pool chlorinator), so I can't speak from experience, but on another science forum, someone claims to have made an anode (although I don't think that he tested it for a very long time) using graphite powder made into a gel with "water glass" and some boric acid.
So just thinking out loud, maybe a "water glass" and boric acid solution might be a useful substitute for linseed oil.
Registered Member #2400
Joined: Mon Sept 28 2009, 10:04AM
Location: Bundaberg, Australia
Posts: 18
hey im new but i tryed making one of these cells. what power supply are using beacause i used a 10 amp power pack and it took around 24hrs of running to make the pottasium chlorate. Also you need to keep the cell running at 50 -70 degrees.
Registered Member #8
Joined: Thu Feb 02 2006, 04:34AM
Location: Harlowton, MT, United States
Posts: 214
I bet the linseed oil polymerizes under the conditions in the cell, forming a more durable filling than most materials would. Waterglass and boric acid are both water soluble, although waterglass alone will cure forming silica and sodium carbonate if treated with CO2. Your best bet in any case is to use more anodes and low current density, and also keep chloride concentrations high, in other words don't run it until it's fully converted. Keeping it well below 50mA/cm^2 and keeping a high chloride content and low pH will ensure long graphite anode life and low graphite particulate in the electrolyte. Excess chloride can be separated by crystallization.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
chlor-alkali cell
