Sciencemadness Discussion Board
Not logged in [Login - Register]
Go To Bottom

Printable Version  
Author: Subject: preparation of hydrogen gas under pressure
reidy2015
Harmless
*




Posts: 23
Registered: 14-3-2015
Member Is Offline

Mood: No Mood

[*] posted on 18-4-2015 at 16:51
preparation of hydrogen gas under pressure


View user's profile View All Posts By User
Loptr
International Hazard
*****




Posts: 1263
Registered: 20-5-2014
Location: USA
Member Is Offline

Mood: Grateful

[*] posted on 18-4-2015 at 16:53


Yes? No? Maybe?

I honestly have no clue.

[Edited on 19-4-2015 by Loptr]
View user's profile View All Posts By User
HgDinis25
National Hazard
****




Posts: 439
Registered: 14-3-2014
Location: Portugal
Member Is Offline

Mood: Who drank my mercury?

[*] posted on 18-4-2015 at 16:55


Get into school. Do not study anything (very important part). Wait until the night before your exams. Add Sodium Hydroxide solution to aluminium. There you go, making hydrogen under pressure...
View user's profile Visit user's homepage View All Posts By User
reidy2015
Harmless
*




Posts: 23
Registered: 14-3-2015
Member Is Offline

Mood: No Mood

[*] posted on 18-4-2015 at 17:25


Thanks :)
View user's profile View All Posts By User
Magpie
lab constructor
*****




Posts: 5935
Registered: 1-11-2003
Location: USA
Member Is Offline

Mood: Chemistry: the subtle science.

[*] posted on 19-4-2015 at 13:18


Covering zinc with H2SO4 is another way to generate hydrogen. Also there is electrolysis of water. Is there a preferred method for lab scale hydrogenations at atmospheric pressure? Or is the choice simply a matter of convenience/economics?



The single most important condition for a successful synthesis is good mixing - Nicodem
View user's profile View All Posts By User
zed
International Hazard
*****




Posts: 1756
Registered: 6-9-2008
Location: Great State of Jefferson, City of Portland
Member Is Offline

Mood: Semi-repentant Sith Lord

[*] posted on 19-4-2015 at 15:47


NaBH4 is probably the best. Unfortunately, the price has never come down enough to allow for wide popularity.

Just drip an NaBH4/H20 solution into acid, via a hypodermic needle inserted into a mercury-valve supplying a sealed system. Hydrogen is generated, creates back pressure, and momentarily stops liquid flow until the H2 is consumed. Valve will feed automatically, until reaction eventually stops absorbing hydrogen.
View user's profile View All Posts By User

  Go To Top