NOVELTY - Forming liquid hydrocarbons, comprises either: mixing levulinic acid salt-containing feedstock with formic acid salt, exposing mixture to high temperature condition to form hydrocarbon vapor, and condensing hydrocarbon vapor to form liquid hydrocarbons; or mixing levulinic acid-containing feedstock with formic acid, neutralizing mixture by adding at least one of an alkali base, an alkaline earth base, or a base-forming metal oxide, exposing the neutralized mixture to a high temperature condition to form hydrocarbon vapor, and condensing the hydrocarbon vapor to form liquid hydrocarbons.    USE - The method is useful for forming liquid hydrocarbons.    ADVANTAGE - The method: generates energy dense liquid hydrocarbons without the need for modulated pressure; do not require special equipment and/or conditions compared to conventional processes; can be performed in relatively high yields; is robust and do not require any precious metal catalysts; and does not require any externally added hydrogen to facilitate deoxygenation of the feedstock.    DETAILED DESCRIPTION - Forming liquid hydrocarbons, comprises either: mixing a levulinic acid salt-containing feedstock with a formic acid salt, exposing the mixture to a high temperature condition to form hydrocarbon vapor, and condensing the hydrocarbon vapor to form liquid hydrocarbons; or mixing a levulinic acid-containing feedstock with formic acid, neutralizing the mixture by adding at least one of an alkali base, an alkaline earth base or a base-forming metal oxide, exposing the neutralized mixture to a high temperature condition to form hydrocarbon vapor, and condensing the hydrocarbon vapor to form liquid hydrocarbons, where both the formic acid salt and the levulinic acid salt-containing feedstock/the neutralized mixture decompose at high temperature condition, and at least one of the mixing, exposing, and condensing steps/mixing, neutralizing, exposing, and condensing steps is carried out at a pressure of vacuum to 10 bar.