It's hard not to be jealous of research labs with literal pounds of cesium, rubidium, and elemental fluorine, lol. Must've been a fun trip for you, great video!

Rummaging around in a drawer full of cesium/rubidium ampoules 😬

Every high school and college chemistry enthusiast or DYI is drooling in envy over this selection. Every kid or adult likes child who likes fire and explosions and performing chemical reactions would be in heaven with this treasure trove

Please make more videos in this lab, especially about fluorine!

Well done Prof. Dr. Florian Kraus for delivering a fascinating applied chemistry lecture while holding a giant glass apparatus that seemed poised to take out someone's eye.

This is on the highest level of educational videos available on KZfaq! Brilliant! My highest respect!

Loved this video. When I was in grad school I was going to work in a lab that used a lot of alkali metals and exotic elements but decided to leave. Also "low temperature" in that lab was about 600C and they'd go up to I think 4,000 or 5,000C for their reactions. have always wanted to do air sensitive work since then (haven't had a chance). Amazing video and great explanations.

Absolutely amazing video! It’s a pleasure listening to researchers so passionate about their work. So many small but critical details. I would definitely love to hear about their work with fluorine chemistry as well. I wonder if they work with ClF3? It would probably not be as terrifying to someone who is used to working with aggressive alkali metals. I was also intrigued by the very large freezer that said the contents are radioactive. I hope it doesn’t contain ampules with pure Cs-137 😅

Super interested in his fluorine chemistry setup. This might be one of the best inorganic research lab videos related to Alkali metals I have had the opportunity to see.

This is an incredible lab, thank you and the professor for this kind of access. Not something we get to see often. This stuff, especially in this quantity is only ever seen in industry or academia. Part of me feels like those ampoules should be stored in a box, nested in form fitting closed cell foam. Just the thought of Rummaging around in a drawer full of alkali metals makes my butt pucker.

As a glassblower who makes bongs I am in awe of the skills of the lampworkers.

Holy shit I know this guy is _the_ expert but he’s reeeeaaaallly comfortable being around that much pure cesium

I just keep coming back. I have watched this video probably 10 times and I cannot get over it, it is simply amazing. I love chemistry and also have a special place in my heart for glassblowing, seeing the two come together in such a spectacular way is truly inspiring. I wish I could make a living as a scientific glassblower, dream job of mine but I have literally no skill in the field, just a pipe dream if you will.

What a cool video! I would absolutely like to see more of his lab and procedures. Really cool to see how that last bit of purity can be squeezed out when you have the need and the resources to do so. I think I can use the pouring idea as well to make some cleaner NaK ampoules even without a proper vacuum/argon flushing setup.

the infos on the glovebox and how it can kill certain chemicals was really eye opening

This was an awesome lab tour. Thank you for getting such a good video, and thanks to Prof. Dr. Kraus for taking the time to thoroughly explain everything. I bet he has some good lab stories.

What an amazing video, I'd love to see more of his work. Those draws full of ampules of rubidium and caesium made me nervous.

Thank you for posting this amazing video!

Could watch Prof Kaus all afternoon!

Smuggled rubidium? I didn't even know people did that. Great video!

loved thiis video, and would love to see a second video with this professor! keep the great content up!

I love that the argon cylinder at the end is labeled ARRRGON.

This channel is a hidden gem

This channel makes nerds very happy.

Some of the distilling equipment he mentioned... Mind blown 🤯 wicked video

Absolutely loved seeing these techniques for working with the more reactive alkali metals. Thanks!

Fascinating. I am working in a research lab for Li and Na Batteries. Seeing all these complecated destilation apparatus makes clear to me why we do not purify all our alkali metals ourself. We also have super pure Li. Very cool Video.

You know you're a true nerd when you chuckle at the thought of drying agents getting dried out by your reagent. 😂

This is amazing to see this.the custom glassware and the process is way beyond what I expected. I felt nervous watching. Thank you.

I'm equally fascinated by all the super elaborate glass contraptions they just have lying around.

0:26 XeF2 😍 Cool video and cool equipment!

This was awesome!

Fantastic!

Fantastic video! Those ampoules and canisters of alkali-metals are amazing!

Excellent, pleas more of this dude

Amazing interesting video!

Beautiful! I do want another video with him

Awesome video! I would love to see anything you would setup with this professor in the future! The knowledge shared with us between the two of you is amazing! You definitely gained a new subscriber!

Nice process shown here. Weekend Stuff

This was truly *amazing*

This video made me sub. Keep up the good stuff!

Very interesting, liked it very much.

This is really cool, but also slightly terrifying. Great video.

Wonderful video, thank you for making it. I subscribed to both your channel and Prof. Dr. Kraus' channel.

This was excellent!

I used Cs from an ampoule that was loaded into a stainless steel apparatus. Apparatus was baked under vacuum with Cs in ampoule, then break ampoule, then distill Cs into second pot, then use Cs as vapor distilled from second pot. As you can tell, we really wanted no residual moisture...

WOW! More please.

I stumbled across fluorineisgreat a few years ago, it's pretty well the best&only place I know on youtube to see bricks burn. If you plan to play with him some more and potentially do some inappropriate fluorine chemistry with your much better camera I'd be stoked.

Fluorine is indeed great. Truly fascinating to learn about the role of moisture inclusions in the caesium/PTFE reaction - really makes me want to see if caesium reacts readily with more fluorinated carbon compounds like perfluoromethane, since breaking the "strongest bond in organic chemistry" is pretty useful.

Remember using a canister identical to one of those big rubidium containers for filling up the cooling system of an large E-beam evaporator a while back. It held NaK liquid metal alloy and used about half the container worth. 🤓

Awesome! Would love more of this

Very interesting to see how professionals work with the alkaline metals, I see it's not too different from how you do it! I'm personally very curious about the one alkaline metal that is mentioned but not shown in the video and that is lithium. I need a very pure sample for an experiment I'm performing and for this purpose I've welded a steel destillation apparatus together (because I found out glass is less than ideal) to be placed in a vacuum oven with different temperature zones. I will construct a glove box to connect to the vacuum oven to extract the lithium and perform my experiment. I was planning to have a hot plate with magnetic stirrer to heat up a pressure cooker without the lid that contains molten lithium to absorb anything that could otherwise react with my destilled lithium. After the experiment I can put the lid on to safely store it. If you could ask professor Kraus to show his steel and tantalum lithium destillation apparatus and his hot plate with lithium granules next time you visit him I would really appreciate it, and I think it would make an interesting video. Thanks!

very, very impressive.

Bravo............I'm am amazed u touch in .......cheers

Great stuff, would love to see a vid about fluorine!

Interesting video!

Amazing video! Please also do a video on Uranium and Thorium chemistry with him.

Prof. Dr. Kraus ist der beste💪 super netter und kompetenter Professor

Fascinating. Thank you so very much.

yes! more videos please!

Wow super spectacular video! Those amounts of Rb and Cs are just mind blowing. Also that idea with the ultrasonic bath, Cs and Teflonpowder really needs to be tetsted. :D

That's interesting, I've always thought of getters as just a way of maintaining high vacuum... I've never considered that you could use a getter to absorb a particular containment in a distillation.... And, wooooah, that's something of an amazing piece of glassware - respect to the glassblower who has to repair these over and over again.

I love the color of cesium.

This video has not nearly enough the views it deserves

This once again confirms my suspicion that the internet actually just consists of German speakers talking to other German speakers in English.

thanks

supergeiles Video. schau mal ob du bei den nächsten nicht für dich und dein Interviewpartner ein kleines Mikrofon bekommst

Probably the coolest glassware on youtube, and then they use it to boil scary metals in, what's not to like?

5:00 Love how they store the large very heavy bottles above the thin delicate tubes, opposite the way it should be.

The gas cleaner is very similar to the buffer gas scrubber for a MOCVD machine. Definitely want a follow up re Fluorine chemistry 😁

Du machst echt super Videos, macht echt spaß dir zuzugucken. Immer weiter so👍 Vielleicht hast du ja mal Lust die Exotherme Reaktion von Basenanhydriden und Säureanhydriden zu zeigen sowas wie Li2O + MoO3 oder Na2O + P4O10 oder BaO + B2O3 nur so jetzt als Beispiele. Würde mich wirklich mal interessieren und gabs in dieser Form glaub auch noch nicht auf KZfaq.

Wow so awesome - the closest I have got is reacting Mg with NaOH - it is crude but works -That lab wow!! Lots of plumbing !! Very well explained, Professor, Doctor and Teacher 🙏🙏🙏👌👍 I was curious, I have heard that AlLiH4 is also pretty sensitive to moisture..

A great video on how these processes are done. Not that I really completely understand. Still interesting.

Dammit I did not have time for this but here we go...

Chemiolis mentioned your video and here I am :)

I have gotten rid of 100 g of encrusted sodium by cutting it into small pieces and letting it sit on the bench overnight in a metal tub. It completely reacted with and dissolved in the water it drew from the atmosphere. Seems way safer than quenching it in Toluene + iPrOH or whatever, as long as you can make sure nobody else is working in the same space.

Fluorine chemistry! Yeah! Please 😁

I made cesium azide before! I was too lazy to decompose it in a test tube (and I was worried of residual water being in the cesium azide and blowing up the test tube) but I burned it and it burned with a beautiful purple color!

This is SO cool. What about hydrogen embrittlement concerns for the container on last stage of the argon stage?

If I remember correctly, FLiBe Energy is proposing a UF6 fluorination process in his molten salt reactor designs. Kirk Sorensen has been a proponent of this type of tech for a long time.

This shit is fascinating

cool

That place better not get flooded 🤭

I whant to SEE more video about lab

wow what a cool and dangerous facility

43:20 Nice Disco light on this equipment :D

Some interesting cans that rubidium came in. They look like they might be aluminium? And why would someone want to smuggle such a thing?

That spiky glass apparatus looks like Hallucinogenia!

At 44 min and ca. 40 sec I tell nonsense, the Ti sponge is not reacting with N2 at these temperatures. 1200 °C would be required, which you can't do in a silica tube. However, the N2 content in Ar 4.8 is below or equal to 10 ppm, so it doesn't matter for us.

And there was me thinking this video was about the production and purification of alkali metals when in fact the video is about Prof. Dr. Florian Kraus' laboratory and what he does with alkali metals.

This is great and im not a pro-chemist

42:00 *ARRRGON* - This was the argon smuggled to Germany by the pirates back in the 1980s.

🤩😱🤩😱🤩😱🤩

Wow, how do you get permission to do interviews in places like that? Insider friend? Charm?

Ein sehr tolles Video und vielen Dank für den Content. Ich frage mich nur warum ich wegen jeder Ethanolflasche und Dose Bremsenreiniger einen mega aufstand mit Gefahrstoffliste, Datenblatt, Gefährdungspotential und Betriebsanweisung mache. Und da liegen die Cäsium-Ampullen in einer Ramschkiste in der Schublade kreuz und quer übereinander. Bissel gefährlich ist das schon, oder?

The idea of distilling metals to refine them will never stop being weird to me.

How do they store all the crazy glassware?

do they have NaK in larger quantities like liters?

What was the value of the confiscated rubidium?

Do you think it is possible to recover neodymium metal from chipped or crushed neodymium magnets?