Extracting Platinum and Palladium from Catalytic Converters

TLDRIn this video, Cody's Lab demonstrates the process of extracting platinum and palladium from catalytic converters. He cuts open the converters and removes the catalytic material. He then uses hydrochloric acid and an oxidizer to dissolve the precious metals, which are then displaced onto copper. The copper is then dissolved, leaving behind a solution of platinum and palladium. After rinsing off the excess copper, the solution is evaporated to obtain the precious metals.

Key insights

💎Catalytic converters contain a honeycomb-like material made of zirconium dioxide ceramic with an alumina wash coat.

🔬Cody verifies the presence of platinum and palladium in catalytic converters using an X-ray fluorescence spectrometer.

🧪The catalytic material is dissolved in hydrochloric acid and oxidized using calcium hypochlorite to extract the precious metals.

💰Cody warns against buying pre-processed catalytic converter material, as it may have already been extracted of valuable metals.

🔥Cody demonstrates the reaction of platinum and palladium with oxygen, causing them to heat up without a flame.

Q&A

Why are platinum and palladium present in catalytic converters?

Platinum and palladium act as catalysts in catalytic converters, helping to facilitate chemical reactions that convert harmful emissions into less harmful substances.

What is the purpose of the honeycomb-like structure in catalytic converters?

The honeycomb-like structure provides a large surface area for the catalytic material to come into contact with exhaust gases, increasing the efficiency of the catalytic process.

Why does Cody dissolve the catalytic material in hydrochloric acid?

Hydrochloric acid is used to dissolve the catalytic material and release the precious metals it contains. The acid reacts with the ceramic, allowing the metals to be extracted.

How can you tell if a catalytic converter has valuable metals?

Cody uses an X-ray fluorescence spectrometer to analyze the catalytic material and detect the presence of platinum and palladium. Spikes in the data indicate the presence of these valuable metals.

Can you extract platinum and palladium from other sources?

Yes, platinum and palladium can also be found in other materials, such as electronic waste and ores. The extraction process may vary depending on the source.

Timestamped Summary

00:00Introduction to the project of extracting platinum and palladium from catalytic converters.

02:20Demonstration of the honeycomb-like structure and composition of catalytic converters.

05:03Warning against purchasing pre-processed catalytic converter material to avoid being ripped off.

08:48Extraction of the catalytic material from the converters and its composition analysis.

13:40Reaction of platinum and palladium with oxygen to demonstrate their heat-generating properties.

14:53Challenges faced during the process, including loss of solution and tips for recovery.

16:47Dissolving excess copper and obtaining a solution of platinum and palladium.

17:02Washing out copper solution and preparing for final stage of obtaining the precious metals.