Silica-alumina catalyst support with bimodal pore...

Chemistry: fischer-tropsch processes; or purification or recover – Group viii metal containing catalyst utilized for the...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C518S700000

Reexamination Certificate

active

10964988

ABSTRACT:
An effective catalyst includes an amorphous silica-alumina support having a bimodal pore size-distribution. The support may be prepared by a method that includes the physical mixing of two silica-alumina gels prepared so as to have two different average pore sizes. The catalyst has the advantage that both metal dispersion on the support and product diffusion in the pores are optimized. Further, the catalyst has improved performance in the production of hydrocarbons from synthesis gas.

REFERENCES:
patent: 2892858 (1959-06-01), Ziegler
patent: 3852190 (1974-12-01), Buss et al.
patent: 3894963 (1975-07-01), Gerdes et al.
patent: 4012313 (1977-03-01), Buss et al.
patent: 4063851 (1977-12-01), Weldon
patent: 4224192 (1980-09-01), Foster et al.
patent: 4387085 (1983-06-01), Fanelli et al.
patent: 4602000 (1986-07-01), Dupin et al.
patent: 4617183 (1986-10-01), Lewis et al.
patent: 4708945 (1987-11-01), Murrell et al.
patent: 4744974 (1988-05-01), Lewis et al.
patent: 4831007 (1989-05-01), Murrell et al.
patent: 4891127 (1990-01-01), Murrel et al.
patent: 5055019 (1991-10-01), Meyer et al.
patent: 5102851 (1992-04-01), Eri et al.
patent: 5116879 (1992-05-01), Eri et al.
patent: 5134107 (1992-07-01), Narula
patent: 5232580 (1993-08-01), Le et al.
patent: 5837634 (1998-11-01), McLaughlin et al.
patent: 5874381 (1999-02-01), Bonne et al.
patent: 6063358 (2000-05-01), Lindquist et al.
patent: 6224846 (2001-05-01), Hurlburt et al.
patent: 6255358 (2001-07-01), Singleton et al.
patent: 6262132 (2001-07-01), Singleton et al.
patent: 6271432 (2001-08-01), Singleton et al.
patent: 6303531 (2001-10-01), Lussier et al.
patent: 6465530 (2002-10-01), Roy-Auberger et al.
patent: 6503867 (2003-01-01), Stamires et al.
patent: 6555496 (2003-04-01), Stamires et al.
patent: 6806226 (2004-10-01), Van Berge et al.
patent: 6835690 (2004-12-01), Van Berge et al.
patent: 2002/0155946 (2002-10-01), Bogdan et al.
patent: 2002/0192155 (2002-12-01), Sterte et al.
patent: 2003/0027875 (2003-02-01), Zhang et al.
patent: 2003/0032554 (2003-02-01), Park et al.
patent: 2003/0114543 (2003-06-01), Zhang et al.
patent: 2003/0162849 (2003-08-01), Van Berge et al.
patent: 2004/0186188 (2004-09-01), Van Berge et al.
patent: 640965 (1950-08-01), None
patent: 2 352 194 (2001-01-01), None
patent: WO 99/42214 (1999-08-01), None
patent: WO 00/45948 (2000-08-01), None
patent: WO 01/76735 (2001-10-01), None
patent: WO 01/87480 (2001-11-01), None
patent: WO 02/07883 (2002-01-01), None
patent: WO 03/012008 (2003-02-01), None
patent: 2001/6213 (2001-07-01), None
PCT International Preliminary Report on Patentability For International Application PCT/US04/34414 dated Apr. 18, 2006 (4 pg.).
Snel, R. “Control of the porous structure of amorphous silica-alumina: 4. Nitrogen bases as pore-regulating agents” Applied Catalysis, vol. 33 (Issue 2), p. 281-294 (1987).
Snel, R. “Control of the porous structure of amorphous silica-alumina 3. The influence of pore-regulating reagents” Applied Catalysis, vol. 12 (2), p. 347-357 (1984).
Snel, R. “Control of the porous structure of amorphous silica-alumina 2. The effects of ph and reactant concentration” Applied Catalysis, vol. 12 (2), p. 189-200 (1984).
Zhang, Y. et al “Development of bimodal cobalt catalysts for Fischer-Tropsch synthesis” Catalysis Today, vol. 93-95, p. 55-63 (Sep. 2004).
Takahashi R., et al “Silica-Alumina Catalyst with Bimodal Pore Structure Prepared by Phase Separation in Sol-Gel Process” J. of Catalysis, vol. 200 (1), p. 197-202 (2001).
Rong-Sheng Zhou, et al.; “Structures and Transformation Mechanisms of the η, γ and η Transition Aluminas”; International Union of Crystallography 1991; Institute for Ceraminc Superconductivity, New York State College of Ceramics, Alfred University, Alfred, NY 14802, USA; pp. 617-630.
Richard L. Smith, et al.; “The Influence of Diaspore Seeding and Chlordie Concentration on the Transformation of ‘Diasporic’ Precursors to Corundum”; Journal of the American Ceramic Society, Oct. 16, 2000; 31 pages.
H.C. Stumpf, et al.; “Thermal Transformations of Aluminas and Alumina Hydrates”; Industrial and Engineering Chemistry, vol. 42, No. 7, Jul. 1950; pp. 1398-1403.
Shu-Hui Cai, et al.; “Atomic Scale Mechanism of the Transformation of γ-Alumina to θ-Alumina”; The American Physical Society 2002; Physical Review Letters, vol. 89, No. 23; Dec. 2, 2002; 4 pages.
Zhong-Wen Liu, et al.; “Partial Oxidation of Methane Over Nickel Catalysts Supported on Various Aluminas”; Korean J. Chem. Eng., vol. 19, No. 5, pp. 735-741 (2002).
Hyun-Seog Roh, et al.; “Partial Oxidation of Methane Over Ni/η-Al2O3Catalysts”; Chemistry Letters 2001; Mar. 19, 2001; pp. 666-667.
Hyun-Seog Roh, et al.; “Partial Oxidation of Methane Over Ni/Ce-ZrO2/η-Al2O3”; Korean J. CHem. Eng., vol. 19, No. 5; pp. 742-748 (2002).
Hiromichi Arai, et al.; “Thermal stabilization of catalysts supports and their application to high-temperature catalytic combustion”; Applied Catalysis A: General 138 (1996); pp. 161-176; Elsevier Science Publishers B.V., Amsterdam.
Bernard Beguin et al.; “Stabilization of alumina by addition of lanthanum”; Applied Catalysis A: General 75 (1991); pp. 119-132; Elsevier Science Publishers B.V., Amsterdam.
Francois Oudet, et al.; “Thermal Stabilization of Transition Alumina by Structural Coherence with LnAlO3 (Ln=La, Pr, Nd)”; Journal of Catalysts vol. 114; pp. 112-120 (1988).
H. Schaper, et al.; “The Influence of Lanthanum Oxide on the Thermal Stability of Gamma Alumina Catalyst Supports”; Applied Catlysis, vol. 7 (1983), pp. 211-220; Elsevier Science Publishers B.V., Amsterdam.
Jalajakumari Nair, et al.; “Pore Structure Evolution of Lanthana-Alumina Systems Prepared Through Coprecipitation”; J. Am Ceram. Soc., vol. 83, No. 8; pp. 1942-1946 (2000).
Hennie Schaper, et al.; “Thermal Stabilization of High Surface Area Lumina”; Solid State Ionics, vol. 16 (1985), pp. 261-265.
Xiaoyin Chen, et al.; “High temperature stabilization of alumina modified b lanthanum species”; Applied Catalysis A: General, vol. 205 (2001); pp. 159-172.
S. Subramanian, et al.; “Characterization of lanthana/alumina composite oxides”; Journal of Molecular Catalysis, vol. 69 (1991); pp. 235-245.
P. Souza Santos, et al.; “Standard Transition Aluminas. Electron Microscopy Studies”; Materials Resarch, vol. 3, No. 4; pp. 104-114, 2000.
E. Iglesia, et al.; “Computer-Aided Design of Catalysts,” ed. E.R. Becker et al., p. 215-225, New York, Marcel Decker, Inc., 1993.
H. Pham, et al.; “The synthesis of attrition resistant slurry phase iron Fischer-Tropsch catalysts,” Catalysis Today, vol. 58 (2000), pp. 233-240.
Database CAPLUS on STN, Chemical Abstract (Columbus, Ohio, USA), An 2000:795147. Van De Loosdrecht et al.,Support Modification for Cobalt Based Slurry Phase Fischer-Tropsch Catalysts, American Chemical Society (2000), 220th, Fuel 048.
M. Absi-Halabi, et al.; “Studies on Pore Size Control of Alumina: Preparation of Alumina Catalyst Extrudates with Large Unimodal Pore Structure by Low Temperature Hydrothermal Treatment”; Preparation of Catalysts V, 1991 Elsevier Science Publishers B.V., Amsterdam, pp. 155-163.
Database CAPLUS on STN, Wei et al.Microstructure of Al203-Si02 Composite Membranes Prepared by Sol-gel Technique, Guisuanyan Zuebao (2001), 29(4), 392-396.
PCt International Search Report International Application No. PCT/US04/34414 dated Jan. 5, 2005 (2 p.)
Ruud Snel,Control of the Porous Structure of Amorphous Silica-Alumina, Applied Catalysis, 11 (1984) 271-280.
R. L. Espinoza et al.,Catalytic Oligomerization of Ethene Over Nickel-Exchanged Amorphous Silica-Aluminas; Effect of the Acid Strength of the Support, Applied Catalysis, 29 (1987) 295-303.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Silica-alumina catalyst support with bimodal pore... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silica-alumina catalyst support with bimodal pore..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silica-alumina catalyst support with bimodal pore... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3773451

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.