Now, back to our regularly scheduled delusions.

Hydrogen now comes in a variety of Colors, Green, Blue, Gray and the latest entry, TURQUOISE!  ::)  These colors meant to signify their source and whether the H gets produced with or without producing CO₂ emissions in the process.

The feedstock for turquoise H is methane (CH₄), aka Natural Gas (NG), and you get the H from a process called Pyrolysis, where you cook the methane at 700F to split it into its constituent elements Carbon & Hydrogen.  This supposedly is great because you can now sequester the carbon and take it out of the whole RedOx cycle and build stuff with it.  you could use it to make Diamonds!  Diamonds will be so cheap we can make them the size of bricks and build affordable housing with them!  The hardest substance known to man, we can build Diamond Skyscrapers that will stand until the Sun goes Red Giant!  OK, the Diamond stuff is my own hype, but you get the picture I hope.

OK, now why as opposed to Blue Hydrogen you get through Hydrolysis of Water which I consider a good and worthwhile means of making H for use as a transportation fuel (despite perhaps vaporizing the occasional planeload of vacationers bound for Hawaii) do I think pyrolysis of methane is a stupid idea?

First of all, while there is plenty of water available at sea level over 75% of the earth surface in the oceans, to get the much more limited supply of methane you have to drill for it.  Next, while water is completely oxidized and so useless as a fuel,  Methane has tons of energy and pyrolysis actually reduces the amount of energy usable once converted to H & C, besides the fact that like Hydrolysis you need to INPUT a lot of energy from renewable, carbon free sources to do Pyrolysis.  Nobody will do this at scale when they can simply sell the NG right out of the ground.  Third, we already have a chemical process to turn Methane into something useful, the Haber process uses Nitrogen to convert it to ammonia for use in Fertilizers which we need to keep feeding 8B Useless Eaters.  That process has CO₂ as a byproduct which is a downside, but at least until we have a substantial dieoff, we need the fertilizer.

Even the idea that we can build enough renewable energy sources to produce the Gigatons of Hydrogen we'll need every day for all the carz, trucks, planes, container ships and tankers is a pretty big stretch into the world of Hopium addiction, adding still MOAR renewable energy to pyrolyze all the methane is a leap of faith I am unable to make without a half dozen hits of Sandoz Acid. lol.

https://www.ecoticias.com/en/turquoise-hydrogen-fuel/1286/

This turquoise fuel is the end of hydrogen: it is obtained from clouds and metal

RE