[HN Gopher] How to grow green potassium ferrioxalate crystals fr...
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How to grow green potassium ferrioxalate crystals from iron rust
Author : crystalchase21
Score : 62 points
Date : 2022-01-03 12:05 UTC (1 days ago)
(HTM) web link (crystalverse.com)
(TXT) w3m dump (crystalverse.com)
| at_a_remove wrote:
| I have so many questions.
|
| How hard are they? Are they fragile?
|
| Many of them suffer from desiccation and I wonder if they can be
| "sealed" in some manner. Or if the UV-sensitive crystals can be
| protected by some kind of coating.
|
| It would also be interesting to see what would happen using the
| crystals grown in one solution as seeds in a chemically different
| solution. The right sequence might not be reactive, but you could
| layer them ...
| HarryHirsch wrote:
| _It would also be interesting to see what would happen using
| the crystals grown in one solution as seeds in a chemically
| different solution. The right sequence might not be reactive,
| but you could layer them ..._
|
| Ooh, epitaxial growth! Could try that with a series of alums -
| Al(iii), Cr(iii) and Fe(iii) is all readily available.
| Zenst wrote:
| >To carry out electrolysis, I first prepared salt solution as the
| electrolyte. Then, I used a piece of iron as the positive
| electrode and a steel wire as the negative electrode.
|
| Wouldn't you risk producing chlorine gas due to the salt in the
| solution?
| HarryHirsch wrote:
| You are oxidizing the iron instead of the chloride ion. The
| great reactivity of chlorine gas indicates that it requires
| much energy to prepare.
| pavel_lishin wrote:
| Rad! He also shows how to grow beautiful crystals that are safe
| to work on with your kids: https://crystalverse.com/grow-alum-
| crystals-at-home/
| dbsmith83 wrote:
| Have you ever tried suspending the more toxic crystals in epoxy
| resin so they would be safe to handle?
| sophacles wrote:
| Im so sick of the crystal hype squad trying to get us to rewrite
| our rust.
| ycIsGarbage wrote:
| V__ wrote:
| I (genuinely) wonder, how often have you paid authors for their
| articles/blog posts?
| ycIsGarbage wrote:
| Often enough that I'm not just making shit up here.
| Cerium wrote:
| Not the poster, but I have a Patreon account full of my
| favorite bloggers and YouTubers.
| londons_explore wrote:
| I run a website of guides, and have a paypal donate button,
| and I think about 1 in 10,000 visitors donate. Donations are
| mostly $1 or so, but I got a $1000 one once.
|
| Overall, a substantially lower return than ads.
| Levitz wrote:
| >Green potassium ferrioxalate solution exposed to light will turn
| yellow, and then brown, releasing carbon dioxide in the process.
| After keeping them in the dark for some time, they become green
| again. Adding small amounts of oxalic acid greatly helps to speed
| up the process.
|
| I understand why they would turn yellow, but how can they turn
| back to green when keeping them in the dark? They absorb carbon
| dioxide passively somehow?
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(page generated 2022-01-04 23:00 UTC)