Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search

Author Topic: KARPEN PILE  (Read 231003 times)

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #225 on: July 18, 2014, 02:20:22 PM »
Use NaOH solution and Al for pure H2.or electrolysis.never ever use H2 generated from H2SO4 or sulphates,some reduction to H2S takes place.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #226 on: July 18, 2014, 02:28:13 PM »
If there's no H2S in that bottled H2 then its fine we can use it.just chek for H2S pomodoro.save the hassle of having to setup own H2 generator.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #227 on: July 18, 2014, 02:37:57 PM »
Bubble through Pb(NO3)2 solution aswell to check for H2S.no lead will precipitate.

pomodoro

  • Hero Member
  • *****
  • Posts: 720
Re: KARPEN PILE
« Reply #228 on: July 18, 2014, 03:01:07 PM »
I'll do those h2s checks and see what I can invent with some glassware. Profit is, what metals aside from Pt can I fuse with glass?

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #229 on: July 18, 2014, 03:07:35 PM »
If you can rule out H2S in our H2 supply it boils down to 1)O2 contamination at the cathode.2)improperly cohesioned palladium.3)insufficient surace area on silver.just these 3

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #230 on: July 18, 2014, 03:09:23 PM »
Fuse Ag,gold,or Cu wire through glass pomodoro

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #231 on: July 18, 2014, 03:12:15 PM »
Pt wire will leak H2 through glass very slowly.its ok if we are doing temporary tests.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #232 on: July 18, 2014, 03:16:36 PM »
Fuse bare wires not laminated ne.laminations peel.electrolyte creeps.clean all wires in dil HNO3 before fusing.no dirt,preferably rough etched where fuse joint is to avoid pulling wire loose later

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #233 on: July 18, 2014, 03:28:13 PM »
Which country are you in pomodoro cmon tell me (-:

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #234 on: July 18, 2014, 08:39:05 PM »
I think I found problem pomodoro.the reference electrode salt bridge electrolyte was contaminating our electrolyte with Cl- ion.Cl- ion poisoning our cathode.abandon all reference electrodes in the setup from now on.they are not needed.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #235 on: July 18, 2014, 09:38:42 PM »
How much chloride ion can leak through this salt bridge in the middle of this ref electrode.that is the question.

pomodoro

  • Hero Member
  • *****
  • Posts: 720
Re: KARPEN PILE
« Reply #236 on: July 19, 2014, 02:30:48 AM »
The junction has KNO3.   In any case the main problem is oxygen. There is a video which I have not uploaded as yet that shows the  Ag karpen charge up to 900mv as soon as the hydrogen bubbler is removed and air allowed entrance .
The next karpen will be smaller, kept shorted ,sealed with visual means of observing a positive pressure inside it from the hydrogen.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #237 on: July 19, 2014, 09:44:02 AM »
Ok.If we can just get the same V that the chinese got with Pt/Au(not Pd in their study paper) 0.45v and at least one mA/cm2 and permanent.. Then we can pop the shampaigne corks.you now see how difficult it is just to contain H2 without a leak.you also now see how impossible it is if one doesn't know ones electrochemistry quite thoroughly.experience and knowledge are necessary.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #238 on: July 19, 2014, 09:51:32 AM »
Reference KNO3 wouldve also caused probs,its an oxidizer.

profitis

  • Hero Member
  • *****
  • Posts: 3952
Re: KARPEN PILE
« Reply #239 on: July 19, 2014, 11:13:47 AM »
 a U-bulb like this with borosilicate is easy if you have a lab.you can cntrol how much H2 you want sealed by size of bulb at the anode.the cathode side is last to be sealed with gas burner.this can be done very easy with plastic instead of glass.