Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2007-02-13
2007-02-13
Nguyen, Cam N. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S306000, C502S307000, C502S311000, C502S312000, C502S313000, C502S314000, C502S315000, C502S316000, C502S320000, C502S322000, C502S327000, C502S328000, C502S329000, C502S332000, C502S333000, C502S334000, C502S335000, C502S336000, C502S337000, C502S338000, C502S339000, C502S340000, C502S341000, C502S342000, C502S343000, C502S354000, C502S355000, C502S415000, C502S439000, C502S527120, C502S073000, C502S074000, C502S084000
Reexamination Certificate
active
10218803
ABSTRACT:
A catalyst and sorbent is disclosed which comprises pellets with an absorbent core and a protective shell with a catalyst in the shell. Such material is especially well suited for steam reforming of hydrocarbons to produce hydrogen since a reforming catalyst can be incorporated in the shell and a sorbent for the by-product carbon dioxide can be used for the core. It is also well suited for producing hydrogen from carbon monoxide by means of the water gas shift reaction. The shell can be made sufficiently strong and durable for moving bed applications as well as fixed bed applications.
REFERENCES:
patent: 4316813 (1982-02-01), Voss
patent: 4548912 (1985-10-01), Hettinger et al.
patent: 4701436 (1987-10-01), Wang et al.
patent: 5077253 (1991-12-01), Chu et al.
patent: 5082814 (1992-01-01), Stockwell et al.
patent: 5179054 (1993-01-01), Schipper
patent: 5221656 (1993-06-01), Clark et al.
patent: 5228980 (1993-07-01), Stockwell et al.
patent: 5286370 (1994-02-01), Chu et al.
patent: 5433939 (1995-07-01), Wheelock
patent: 5653955 (1997-08-01), Wheelock
patent: 5703003 (1997-12-01), Siriwardane
patent: 5774779 (1998-06-01), Tuchinskiy
patent: 5935889 (1999-08-01), Murrell et al.
patent: 6528683 (2003-03-01), Heidemann et al.
patent: 6586361 (2003-07-01), Heidemann et al.
Westmoreland, P.R. and Harrison, D.P., 1976, Evaluation of Candidate Solids for High-Temperature Desulfurization of Low-Btu Gases,Environmental Science and Technology, 10, pp. 659-661.
Snyder, R.B., Wilson, W.I., Johnson I. And Jonke, A.A., 1977, Synthetic S02Sorbents for Fluidized-Bed Coal Combustors,J. Air Pollu. Con. Ass., 27, pp. 975-981.
Yang, R.T. and Shen, M.S., 1979, Calcium Silicates: A New Class of Highly Regenerative Sorbents for Hot Gas Desulfurization,AlChE J., 25, pp. 811-819.
Yoo, H.J. and Steinberg, M., 1983, Calcium Silicate Cement Sorbent for H2S Removal and Improved Gasification Process, Final Report, Morgantown Energy Technology Center, Morgantown, West Virginia, pp. 1-61.
Hong, Z., Huang, X-Y., Zhang, X-Y. and Wu, B-C., 1989, Development of Advanced Synthetic Sulphur Sorbent for Fluidized Coal Bed Combustion,Proc Int. Conf. Fluid. Bed Combst.(1989)(10th) 1, pp. 591-595.
Kamphius, B., Potma, A.W. and Spitsbergen, U., 1989, Regenerative Sorbents for High Temperature Desulfurization of Coal Combustion Gases,In Proceedings of the 6th Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, 2, pp. 994-1003.
Christoforou, S.C., Efthimiadis E.A. and Vasalos I.A., 1995, Sulfidation-Regeneration Cycles of ZnO-and CaO-Containing Sorbents,Environ. Sci. Tech., 29, pp. 372-383.
Jagtap, S.B. and Wheelock, T.D., 1996, Regeneration of Sulfided Calcium-Based Sorbents by a Cyclic Process,Energy&Fuels, 10, pp. 821-827.
Chun Han and D.P. Harrison, Simultaneous Shift Reaction and Carbon Dioxide Separation for the Direct Production of Hydrogen,Chem. Eng. Sci., 1994, 49 (No. 24B), pp. 5875-5883.
W.E. Waldron, et al., Production of Hydrogen by Cyclic Sorption Enhanced Reaction Process,AlChE Journal, 2001, 47(6), 1477-1479.
Balasubramanian, B., et al. Hydrogen from methane in a single-step process.Chem. Eng. Sci., 1999, 54, 3543-3552.
Ding, Y., et al. Adsorption-enhanced steam-methane reforming.Chem. Eng. Sci., 2000, 55, 3929-3940.
Hufton, J. R., et al. Sorption-enhanced reaction process for hydrogen production.AlChE J., 1999, 45, 248-256.
Shanks Brent H.
Wheelock Thomas D.
Iowa State University & Research Foundation, Inc.
McKee Voorhees & Sease, P.L.C.
Nguyen Cam N.
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