Method for forming synthesis gas
First, please recall: 1940 CO2 + H2O + CH4 = Hydrocarbon Syngas | Research & Development | News;
wherein is disclosed details of: "US Patent 2,198,553 - Making a Synthesis Gas Mixture of Carbon Monoxide and Hydrogen; April, 1940; Assignee: The M.W. Kellogg Company, NY; Abstract: Our invention relates to a method of making synthesis gas ... having a controllable ratio of hydrogen with respect to carbon monoxide ... from methane, steam and carbon dioxide."
Also, as in: USDOE Pays for California Methane from Coal and Steam | Research & Development | News; and: Chicago Recycles CO2 to Methane | Research & Development | News; keep in mind that we can synthesize such useful Methane either from Coal, or, from Carbon Dioxide.