Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Onboard Syngas production using low temp catalyst

Logic · 10-02-2022, 11:50 AM

Idea worth pursuing??
Exhaust temperature, in the manifold close to the head is 1200 F - 649 C.
Low temp Syngas catalysts start working at 1022 F - 550 C.
That's 100C lower than EGT..!
And the Linked study is from 2014..

Syngas: Hydrocarbon + Steam = CO (burns) and H2

Catalysts tested here are nickel-based, or noble metal-based or bimetallic catalysts.
https://sci-hub.se/10.1016/j.ijhydene.2013.12.001
(a good place to find paywalled papers btw.
Watch out for Sci Hubs that 'cant find the paper', but want you to install an app..!)

Now if one were to:

Pyrolyse a bit of petrol or diesel using waste exhaust heat, further down the exhaust.
Mix it with steam made the same way.
And give the mix a last baking in a catalyst filled enclosure around the exhaust manifold bolted to the head..???

Cooling the syngas with an air to air intercooler would likely be advisable.

Pressures seem doable..ish for usable amounts of H2 + pyrolysed fuel + steam..?
Some steam and pyrolysed fuel wont go amiss in an engine while warming up etc..

Sure you're still using fuel, but you are adding H2 and O from water too, using waste heat...

Why aren't car manufacturers looking at this?

I'll research this more as time allows bit wanted to get it out there.

10-02-2022, 11:50 AM	#1 (permalink)
Logic Master EcoModder Join Date: Aug 2022 Location: South Africa Posts: 520 Thanks: 172 Thanked 218 Times in 183 Posts	Onboard Syngas production using low temp catalyst Idea worth pursuing?? Exhaust temperature, in the manifold close to the head is 1200 F - 649 C. Low temp Syngas catalysts start working at 1022 F - 550 C. That's 100C lower than EGT..! And the Linked study is from 2014.. Syngas: Hydrocarbon + Steam = CO (burns) and H2 Catalysts tested here are nickel-based, or noble metal-based or bimetallic catalysts. https://sci-hub.se/10.1016/j.ijhydene.2013.12.001 (a good place to find paywalled papers btw. Watch out for Sci Hubs that 'cant find the paper', but want you to install an app..!) Now if one were to: Pyrolyse a bit of petrol or diesel using waste exhaust heat, further down the exhaust. Mix it with steam made the same way. And give the mix a last baking in a catalyst filled enclosure around the exhaust manifold bolted to the head..??? Cooling the syngas with an air to air intercooler would likely be advisable. Pressures seem doable..ish for usable amounts of H2 + pyrolysed fuel + steam..? Some steam and pyrolysed fuel wont go amiss in an engine while warming up etc.. Sure you're still using fuel, but you are adding H2 and O from water too, using waste heat... Why aren't car manufacturers looking at this? I'll research this more as time allows bit wanted to get it out there.