Abstract:
Solid biomass may be converted to hydrocarbons for use in renewable fuels uses by feeding biomass into a biomass conversion unit and pyrolyzing the biomass in the presence of a regenerated multi-functional catalyst. The regenerated multi-functional catalyst contains an acidic component, a basic component and a metallic component. The biomass is treated within the biomass conversion unit in at least two stages wherein at least one component of the regenerated multi-functional catalyst is fed into each of the stages.
Abstract:
Disclosed are catalyst compositions including zeolite and silica components, methods of making, and processes of using in the thermo-catalytic conversion of biomass. Such disclosed methods of making include treating the zeolite with phosphorous during formation of the catalyst rather than prior to or after catalyst formation.
Abstract:
A metal contaminated spent catalyst or regenerated catalyst from a biomass conversion unit may be subjected to an ammonium wash in order to remove potassium. The ammonium wash may include ammonium sulfate, ammonium nitrate, ammonium hydroxide, ammonium acetate, ammonium phosphates, and mixtures thereof. Acidity and catalytic activity of the biomass conversion catalyst is restored by the removal of potassium contaminants.
Abstract:
Spent catalyst or regenerated catalyst from a biomass conversion unit may be rejuvenated by treating at least a portion of the spent catalyst or regenerated catalyst with a treatment acid, the treatment acid comprising an inorganic acid or an organic acid or a mixture thereof.
Abstract:
A metal contaminated spent catalyst or regenerated catalyst from a biomass conversion unit may be subjected to an ammonium wash in order to remove potassium. The ammonium wash may include ammonium sulfate, ammonium nitrate, ammonium hydroxide, ammonium acetate, ammonium phosphates, and mixtures thereof. Acidity and catalytic activity of the biomass conversion catalyst is restored by the removal of potassium contaminants.
Abstract:
A multi-functional catalyst for the conversion of biomass contains zeolite ZSM-5, zeolite USY, a metallic component, a basic material and a binder. The metallic component may be Cu, Ni, Cr, W, Mo, a metal carbide, a metal nitride, a metal sulfide or a mixture thereof. The basic material may be an alkaline-exchanged zeolite or an alkaline earth-exchanged zeolite having from about 40 to about 75% of exchanged cationic sites.