Other

The United States of America As Represented by the Department of Energy

U.S. Department of Energy

Todd H Gardner

David A Berry

Robert G James

Dushyant Shekhawat

K David Lyons

Nano-structured noble metal catalysts based on hexametallate lattices, of a spinel block type, and which are resistant to carbon deposition and metal sulfide formation are provided. The catalysts are designed for the reforming of hydrocarbon fuels to synthesis gas. The hexametallate lattices are doped with noble metals (Au, Pt, Rh, Ru) which are atomically dispersed as isolated sites throughout the lattice and take the place of hexametallate metal ions such as Cr, Ga, In, and/or Nb. Mirror cations in the crystal lattice are selected from alkali metals, alkaline earth metals, and the lanthanide metals, so as to reduce the acidity of the catalyst crystal lattice and enhance the desorption of carbon deposit forming moieties such as aromatics. The catalysts can be used at temperatures as high as 1000&#xb0; C. and pressures up to 30 atmospheres. A method for producing these catalysts and applications of their use also is provided.

Nano-structured noble metal catalysts based on hexametallate architecture for the reforming of hydrocarbon fuels

A metal substituted hexaaluminate catalyst for reforming hydrocarbon fuels to synthesis gas of the general formula ABAlO, A being selected from alkali metals, alkaline earth metals and lanthanide metals or mixtures thereof. A dopant or surface modifier selected from a transitions metal, a spinel of an oxygen-ion conductor is incorporated. The dopant may be Ca, Cs, K, La, Sr, Ba, Li, Mg, Ce, Co, Fe, Ir, Rh, Ni, Ru, Cu, Pe, Os, Pd, Cr, Mn, W, Re, Sn, Gd, V, Ti, Ag, Au, and mixtures thereof. The oxygen-ion conductor may be a perovskite selected from M'RhO, M&#x2032;PtO, M&#x2032;PdO, M&#x2032;IrO, M&#x2032;RuOwherein M&#x2032;=Mg, Sr, Ba, La, Ca; a spinel selected from MRhO, MPtO, MPdO, MIrO, MRuOwherein M=Mg, Sr, Ba, La, Ca and mixtures thereof; a florite is selected from M&#x2033;O.

Methods of reforming hydrocarbon fuels using hexaaluminate catalysts

The invention provides a method and apparatus for producing a synthesis gas from a variety of hydrocarbons. The apparatus (device) consists of a semi-batch, non-constant volume reactor to generate a synthesis gas. While the apparatus feeds mixtures of air, steam, and hydrocarbons into a cylinder where work is performed on the fluid by a piston to adiabatically raise its temperature without heat transfer from an external source.

Growing community of inventors

Morgantown, WV, United States of America

Todd H Gardner