Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2011-01-18
2011-01-18
Bos, Steven (Department: 1736)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C423S247000, C423S437200, C423S656000, C429S412000, C429S420000, C429S524000, C429S525000, C429S526000, C429S528000
Reexamination Certificate
active
07871957
ABSTRACT:
A durable catalyst support/catalyst is capable of extended water gas shift operation under conditions of high temperature, pressure, and sulfur levels. The support is a homogeneous, nanocrystalline, mixed metal oxide of at least three metals, the first being cerium, the second being Zr, and/or Hf, and the third importantly being Ti, the three metals comprising at least 80% of the metal constituents of the mixed metal oxide and the Ti being present in a range of 5% to 45% by metals-only atomic percent of the mixed metal oxide. The mixed metal oxide has an average crystallite size less than 6 nm and forms a skeletal structure with pores whose diameters are in the range of 4-9 nm and normally greater than the average crystallite size. The surface area of the skeletal structure per volume of the material of the structure is greater than about 240 m2/cm3. The method of making and use are also described.
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Emerson Sean C.
Opalka Susanne Marie
Radhakrishnan Rakesh
Tulyani Sonia
Vanderspurt Thomas Henry
Bos Steven
Schneeberger Stephen A.
UTC Power Corporation
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