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TEK Converting CBD to THC using only Zeolite and heat.

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You can put the aluminum pack in the freezer before you open it, let it freeze for 30-60min and the material will become completely solid, which helps the aluminum to separate more easily.


If you want to use ethanol to dissolve the material left on the aluminum, make sure all the materials are cold (fridge cold), because at higher temperatures ethanol and aluminum react to form aluminum triethoxide, which is caustic and damaging to the eyes. (its just better to Avoid this.)
At what temperatures are this? And what strength of ethanol? Since I've never heard of this and find it not uncommon that alcohol is used in aluminum cans and jars.
 
Hi!


New day, new problems.


Today I tried to make a new batch. This time, 3 g of zeolite to 3 g of CBD. Like before, I wrapped the mixed ingredients in aluminum foil, forming an envelope shape. I baked it for 25 minutes at 105–150°C. This time, the mixture was the stickiest and hardest to separate – the aluminum layers fused so tightly that even after an hour in the freezer, I couldn’t pull them apart.


I decided to put everything (including the foil) into 95% ethanol because I couldn't even scrape off a small part. I slightly heated a pot with water and placed a jar with the mixture inside (around 40°C). I stirred for about 30 minutes, trying to dissolve as much as possible. Then, I carefully removed the aluminum foil and placed it on baking paper. I started noticing white powder left on both the paper and the foil.


After a short mix, I tried filtering it with coffee filters. That’s when I started noticing white dust everywhere – on the jar walls, in the funnel. I went through four rounds of filtering because there were still some particles in the mixture. Each filtration left me with less liquid, and a few times, the filter even got completely clogged.


I put the filtered mixture back into the pot with 40°C water to evaporate the ethanol. As it was dissolving, small balls of something (impurities?) started forming. The less ethanol remained, the more of them appeared. In the end, I was left with a very small amount of something wax/resin-like, but it was very dark brown. It didn’t look like anything I had seen before. I already knew, that this batch is wasted, so i tried to experiment with that.


I tried mixing it with an e-cigarette base (70/30 PG/VG) – not for smoking, relax, just to clean the jar and check the solubility for future. It didn’t dissolve. More small balls formed almost instantly. After 20 minutes of mixing, nothing changed. However, it was liquid enough to suck it up with a syringe.


After this failure, I prepared another batch, this time using 2 g:2 g zeolite/CBD wrapped in baking paper inside aluminum foil. This time I only baked it – the previous steps took too much time, so I skipped them for today. Maybe that’s for the better. Baking paper did a great job (I think). After an hour in the freezer and a little help from a spatula, I was left with 3.4 g. The aluminum one cost me nearly half of my material.


Any advice on what could have gone wrong? I have a few possibilities in mind:


  • Could I have dissolved the zeolite/CBD in ethanol for too short a time? Maybe leaving it overnight and filtering it in the morning would be a good idea?
  • Were my baking settings incorrect?
  • Could some reaction have happened when I put slightly warm (not hot) zeolite into the freezer?

The photo on the scale is from the second batch – it’s all I had left. Is something like this the desired result?

And one pro tip that a Moroccan guy once told me – if your fingers are too sticky from weed and nothing helps, try rubbing them on your upper nose. that helped me today many times.
 

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Prior to reaction, 1.5 g of Zeolite-Y ‘'’ form was suspended in 10 ml distilled water and 3 g of sodium bicarbonate was added. This mixture was stirred 1 hour, filtered and the zeolite washed 3 times with 10 ml distilled water and once with 10 ml ethanol. The zeolite was dried approximately 2 hours in a vacuum oven at 50° C. Suspending 100 mg of the zeolite in 5 ml distilled water gave a pH reading of 9.2. CBD (5.0 g) was combined with the treated catalyst (0.6 g) under vacuum. The mixture was warmed to 175° C. for 2 hours. The cannabinoid content of the product mixture consisted of 4.2% CBD, 13.4% Δ8-THC, and 73.9% Δ9-THC, with the remainder being minor cannabinoids.

from US11352337B1 - Zeolite catalyst and method for preparation of aromatic tricyclic pyrans - Google Patents - exanple 6 and 15

anybody has experience with replicating this? or tips to achieve it in real life?
it interests me because it is much safer than using strong acids and flammable solvents.

I'm surprised that they use only 0.6g of zeolite for 5g cbd, when most other zeo methods online call for 1:1 ratio. is zeolite Y THAT MUCH more potent?!
 
At what temperatures are this? And what strength of ethanol? Since I've never heard of this and find it not uncommon that alcohol is used in aluminum cans and jars.
Nice note, naturally (by contact with oxygen) aluminum cans, foil and containers have a protective coating of aluminum oxide that protects the inner aluminum from reacting with water, ethanol, isopropanol etc.

In Acidic conditions Aluminum oxide acts as a base, in our case the acidic conditions from the Zeolite is what could lead to the Aluminum oxide layer to wear, thus allowing the inner aluminum to react.

As for the exact temperatures i am not sure, but the reaction is considered generally slow in room temperature.

Stay Safe and DYOR.
 
With the final test results from Kykeon Analytics in hand I made a calculation:

If we assume Delta-8 is half as strong as Delta-9 then:
  • Delta-8: 56%, divided by two will be 28%
  • Delta-9: 34%
  • Total "Delta-9 strength": 62%
So for each gram of CBD you get 62% "Delta-9 strength" with this conversion tek.


Some other nice things from the test-results paper:
  • Delta-8: 56%
  • Delta-9: 34%
  • 2 other isomers (minor)
  • CBD: Not Detected 😁

Kind regards,

The Traveler
What SOP did you use to achieve those results? 2: 1 zeolite clinoptilolite to CBD 130 for 13 mins in oven ?
 
Nice note, naturally (by contact with oxygen) aluminum cans, foil and containers have a protective coating of aluminum oxide that protects the inner aluminum from reacting with water, ethanol, isopropanol etc.

In Acidic conditions Aluminum oxide acts as a base, in our case the acidic conditions from the Zeolite is what could lead to the Aluminum oxide layer to wear, thus allowing the inner aluminum to react.

As for the exact temperatures i am not sure, but the reaction is considered generally slow in room temperature.

Stay Safe and DYOR.

Thanks! Yes I'm aware of the aluminum oxide protection (been a thing regarding cooking ware) and that it can be removed by acids. But I didn't know that Zeolite was acidic and that there is a reaction between ethanol and aluminum. Always learning :)
 
What SOP did you use to achieve those results? 2: 1 zeolite clinoptilolite to CBD 130 for 13 mins in oven ?


Kind regards,

The Traveler
 
Oh, and these things were pretty much useless since the filter in it is 0.22micron and THC has even in the smallest form a way bigger size. Well, at least I now know I can pull some weird clear liquid from my CBD2THC result... 😆
View attachment 97710
Sorry for the silly question, but do you think this filter will work well to separate zeolite from ethanol and CBD/THC? I’m not sure in which process it was useless for you. I’ve seen it cheap on the internet.
 
I got round to trying this tek on the weekend using argon gas. I also lined my tin jar with greaseproof baking paper which has made it very easy to handle the end-product.

I've since consumed the end-product in the same form it was in when it came out of the oven - still mixed with the zeolite, no ethanol clean-up etc.

On two occasions I've consumed 70mg of the end-product orally with some fat (so ~35mg zeolite and ~35mg THC). It took 3-4 hours to notice the effect which was a very mild high.

Then yesterday I consumed 100mg (so around 50mg THC). It still took 3-4 hours to take effect, but this time I got VERY high. As someone who is unfamiliar with using cannabis-related products I found the high to be a very pleasurable experience.

I'm super impressed with this tek's simplicity and effectiveness. Thanks to everyone here who helped refine the tek.
 
Sorry for the silly question, but do you think this filter will work well to separate zeolite from ethanol and CBD/THC? I’m not sure in which process it was useless for you. I’ve seen it cheap on the internet
He explains his reasoning in the comment ure quoting. Although i dont think thats right because molecules, thc included, are way smaller than 0.22 um.

I've known about this tek since a few years, but filtering the product with tightly rolled kitchen paper in a funnel was New to me and worked great to remove pretty much all the zeolite. The ethanol solution looked very clear after running it through that. But when i took a high powered led lamp, i noticed that there were still solids floating around and accumulating on the bottom.
I thought that those were the paper fibers that people were talking about but I Wasn't able to remove them by filtering through a Coffee Filter.
I will go ahead and order some 0.22um syringe filters and try to filter the solution with that.
I will be able to do that in around 3 weeks and will keep you guys posted.

So to make it clear, before you try to smoke the thc you got from filtering it through the funnel, you need to shine a strong flashlight through it and Look for any solids.

For my next run i will also try to prewash the zeolith with ethanol to remove the smaller particles. I have never done this. Should I just Mix the zeolith with ethanol and then decant and let the zeo on the bottom dry and use that for the extraction?
 
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I was chatting to a friend with more chemistry knowledge than me about ways to remove the zeolite.

They mentioned the concept of 'sedimentation with flocculants'. Basically:
  • Add food-grade diatomaceous earth to the mixture
  • It binds with zeolite particles, forming larger clumps ('flocs')
  • These larger particles settle faster and filter more easily
I've ordered some diatomaceous earth and will give it a try when it arrives.
 
I was chatting to a friend with more chemistry knowledge than me about ways to remove the zeolite.

They mentioned the concept of 'sedimentation with flocculants'. Basically:
  • Add food-grade diatomaceous earth to the mixture
  • It binds with zeolite particles, forming larger clumps ('flocs')
  • These larger particles settle faster and filter more easily
I've ordered some diatomaceous earth and will give it a try when it arrives.
I don't know enough about chemistry to know if this would work or not but it does Sound like a great Idea, thank you for sharing! And please keep us posted if u do decide to try that out 😊
 

My Observations and Best Results from Testing Different Batches (Oral Use)

I've tested several batches of my mixture orally, each prepared with slight differences. In this post, I want to quickly explain what worked best in my setup and share my observations from the whole process. Maybe it’ll save some time and materials for people just getting started.


⚠️ I'm just an amateur with basic school-level chemistry knowledge, so take this as my personal experience — I might be wrong about some stuff. The methods I used are as home-friendly and simple as possible.




🔧 My Setup & Tools Used:

  • 99.8% CBD
  • 100% zeolite
  • 10-year-old oven (not too old, not too new)
  • Aluminum foil
  • Baking paper
  • Ethanol
  • Coffee filters
  • Sterile gauze
  • Coconut oil
  • Pocket scale
  • Kitchen thermometer (liquids only, not oven-safe)



🔥 Baking Process & Timing:

I didn’t use the argon-and-jar method. For me, the aluminum foil method worked amazingly well. Maybe I’ll try the advanced method later, but for now, this one already gave results comparable to edibles from coffeeshops — and I’ve tried many in my life. Delta-8 still hits me pretty good since I’m not that experienced with it.


  • All batches were baked in the 105–150°C range, just like the original method: preheat to 105°C, then raise to 150°C once the mixture is inside. I don’t see a need to change that.

Bake time results:


  • 30 minutes – Too long in my oven. The end product became a super sticky, hash-like substance that stuck to aluminum foil. (Effects: 6.5/10)
  • 20–25 minutes – Better texture, less sticky, easier to handle. (Effects: 7.5/10)
  • 17–20 minutes – Best result for me. Still sticky, but manageable. (Effects: 8–9/10)

About baking surface:


  • Using only aluminum foil caused around 50% of the material to stick and get lost. You can recover some by soaking the foil in ethanol, but it’s not a perfect fix — you’ll still lose a bit.
  • Aluminum foil + baking paper – Total game changer. I was able to recover almost 99% of the material. After cooling to room temp, I chilled it in the freezer, and scraping was super easy. No downside to using baking paper, in my opinion.



🧪 Separation & Filtering Observations:

Coffee filters:


  • Not ideal for catching small zeolite particles — a lot still gets through.
  • Some filters react with ethanol and leave glue-like residue in your mixture, which doesn’t mix well with resin after evaporation.
  • Ethanol can get trapped in the filter, and squeezing it out may push fine zeolite particles through.
  • Still usable if you’re patient and don’t mind some material loss. Works for filtering out larger zeolite chunks.

Sterile gauze:


  • Similar to coffee filters, but no glue or residue left behind.

Syringe filters (0.45 µm):


  • Haven’t tested yet, but I’ve got 10 of them ready to go. They were cheap (~4€ for 10 pcs). I’ll update once I try them.



💨 Ethanol Evaporation Tips:

  • Let the ethanol mixture settle for a few hours (or overnight) in a sealed jar — the zeolite will sink to the bottom. This saves filtering time and effort.
  • I noticed a real difference between purified resin and resin mixed with zeolite when added to edibles. Purified version hits faster and stronger.
    • My last purified batch had ~40 mg THC per chocolate, and it felt just as strong as 80–100 mg of the unpurified version.
    • My theory: Zeolite might slow down THC absorption.
  • Use a smooth, wide glass or ceramic bowl for ethanol evaporation — larger surface area = faster evaporation. A wide bowl works better for me than a glass jar.
  • Slightly heat the mixture before filtering — filters seem to work more efficiently that way.



🍫 Edibles Making:

  • White chocolate is the easiest and fastest method in my opinion. Tastes great, easy to work with, no cooking skills required. Get the highest fat content possible.
    You can go from baking to finished edibles in 1–1.5 hours.
  • MCT oil may help improve effects and absorption, both in preparation and digestion.
  • Coconut oil is my go-to budget choice — great performance without high cost.
  • Purified distillate seems to work better than unfiltered distillate + zeolite.
  • Dark/milk chocolate requires more cooking skills. I ended up with chocolate cream instead of bars — and I do know how to make milk chocolate properly.
    Still, that batch was the strongest edible I’ve made so far.



⚠️ Other Notes & Tips:

  • The resin is very sticky in all forms — especially when mixed with ethanol.
  • Be patient — it can take a while to kick in.
  • Do your own research first before investing in expensive gear like argon, fancy jars, or high-purity ethanol.
  • If your purified distillate is too sticky to weigh, place it on baking paper and freeze for 30 mins to 2 hours.
    Don’t over-freeze — it may turn powdery and become hard to collect. Scrape it directly onto the scale.
  • Resin is dense and heavy — even a tiny drop can weigh ~0.07 g. So don’t be disappointed by how small your final product looks.

More thoughts next week.
 
How long does WAX dissolved in oil last? I want to make chocolate with WAX. How long will it last without refrigeration? What is the best way to dissolve WAX for long-term storage if eaten later?
 
I’ve been on holiday and just took a longer break from making or eating anything with it. So here’s a little summary of everything you asked in one go.


For me, the chocolates were still just as strong after two weeks at room temperature as they were on day one straight from the fridge. The only real difference was in texture and taste — they weren’t as stable or smooth, but the potency felt the same.


As for turning wax into a liquid, I’m still not 100% sure what the best method is. But I’m thinking a simple ceramic coil vape atomizer — like the kind used in most THC vapes — should do the trick. If you’re not sure what I mean, just search “aliexpress ceramic coil atomizer” and you’ll see. You can probably find similar ones in local vape shops too, and they’re usually cheap so you won’t risk messing up your main vape.


What did you mean when you said you didn’t get any results? Like it didn’t get you high, or it didn’t mix well?


Here’s what I did: I gently heated the wax to around 40°C, then added pure PG (propylene glycol), mixed it for about 10–20 minutes (still heating) — and that was it. It mixed well, but when I dripped it directly onto a SMOK mesh coil, it leaked like crazy. I ended up losing about 0.9 ml out of 1 ml, and the 0.1 ml that did stay just blended with my regular vape juice. It gave a very light effect, barely noticeable.
 


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