Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2011-04-05
2011-04-05
Wood, Elizabeth D (Department: 1732)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S172000, C502S304000, C502S325000, C502S332000, C502S333000, C502S334000, C502S339000
Reexamination Certificate
active
07919424
ABSTRACT:
Disclosed herein are a platinum-based catalyst for oxidation/reduction reactions and the use thereof. The platinum-based catalyst is prepared by loading a catalyst composition comprising a water soluble salt of at least one metal selected from among cerium (Ce), zirconium (Zr) and rhenium (Re), on a support comprising at least one selected from among alumina, silica and titania. The disclosed catalyst can be prepared in a simple manner without any particular limitation as to the kind of usable water soluble platinum salt, and when it is applied to various oxidation reactions, including water gas shift reactions of carbon monoxide, three-way catalytic reactions, and selective oxidation reactions of carbon monoxide, and to reduction reactions, such as reactions of removing nitrogen oxide (NOx), it will show excellent catalytic activity. In particular, the disclosed catalyst shows excellent performance even in a specific temperature range in which it is difficult to apply the prior high-temperature water gas shift reaction catalyst and low-temperature water gas shift reaction catalyst. Also, it can remove carbon monoxide even at high temperatures without the loss of hydrogen caused by methanataion, and thus is particularly useful in a hydrogen production process of producing high-purity hydrogen for fuel cells.
REFERENCES:
patent: 6436363 (2002-08-01), Hwang et al.
patent: 6723298 (2004-04-01), Baumann et al.
patent: 6777117 (2004-08-01), Igarashi et al.
patent: 6846475 (2005-01-01), Taguchi et al.
patent: 6932848 (2005-08-01), Dardas et al.
patent: 2002/0061277 (2002-05-01), Ruettinger et al.
patent: 2003/0235526 (2003-12-01), Vanderspurt et al.
patent: 2004/0187384 (2004-09-01), Dardas et al.
patent: 2004/0266616 (2004-12-01), Teshigawara et al.
patent: 2007/0112209 (2007-05-01), Le-Khac
patent: 08150322 (1996-06-01), None
patent: 2000-178007 (2000-06-01), None
patent: 2004-000949 (2004-01-01), None
patent: 16121960 (2004-04-01), None
patent: 2004-284912 (2004-10-01), None
patent: 2004-0063130 (2004-09-01), None
patent: WO-03/039742 (2003-05-01), None
Panagiotopoulou et al., “Effect of morphological characteristics of TiO2-supported noble metal catalysts on their activity for the water-gas shift reaction,” Journal of Catalysis, 225, pp. 327-336 (2004).
Choung et al., “Pt-Re bimetallic supported ono CeO2-ZrO2 mixed oxides as water-gas shift catalysts,” Catalysis Today, 99, pp. 257-262 (2005).
Catalyst Handbook 2nd Edition, “The Water-gas Shift Reaction,” pp. 282-289 (1996).
Kim Jin Hong
Kwak Byong Sung
Lim Mee Sook
Yoon Young Seek
McDermott Will & Emery LLP
SK Energy Co., Ltd.
Wood Elizabeth D
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