Patent
Base metal catalysts for the oxidation of carbon monoxide and volatile organic compounds
| العنوان: | Base metal catalysts for the oxidation of carbon monoxide and volatile organic compounds |
|---|---|
| Patent Number: | 10792,647 |
| تاريخ النشر: | October 06, 2020 |
| Appl. No: | 12/427375 |
| Application Filed: | April 21, 2009 |
| مستخلص: | A method for oxidizing carbon monoxide (CO) and volatile organic compounds (VOCS) comprises contacting a gas containing water vapor and said CO and VOCs with a catalyst composition comprising at least one base metal promoter and at least one base metal catalyst supported on an oxide support material comprising one or more of alumina, silica, zirconia, ceria, and titania, wherein the VOCs comprise one or more of methyl acetate, methane, methyl bromide, benzene, methanol, methyl ethyl ketone, butane, and butene. |
| Inventors: | Chen, Hai-Ying (Conshohocken, PA, US); Reining, Arthur J. (Christiana, PA, US); Andersen, Paul J. (Plymouth Meeting, PA, US); Aiello, Rita (King of Prussia, PA, US) |
| Assignees: | Johnson Matthey Public Limited Company (London, GB) |
| Claim: | 1. A method for removing methyl bromide from a waste stream, the method comprising: contacting the waste stream with a catalyst composition consisting of manganese oxide and copper oxide impregnated onto an oxide support material consisting of lanthanum (La) stabilized Al2O3 and zirconium-stabilized ceria mixed oxide, wherein during manufacture of the catalyst manganese is impregnated onto the oxide support material from an aqueous solution comprising manganese nitrate or manganese acetate and copper is impregnated onto the oxide support material from an aqueous solution comprising copper nitrate or copper acetate; such that the methyl bromide is oxidized by contact with the catalyst composition. |
| Claim: | 2. The method of claim 1 , wherein said waste stream further comprises one or more of methyl acetate, methane, benzene, methanol, methyl ethyl ketone, butane, and butene. |
| Claim: | 3. The method of claim 1 , wherein said waste stream further comprises methyl acetate, methane, and benzene. |
| Claim: | 4. The method of claim 1 , wherein said waste stream further comprises methyl ethyl ketone. |
| Claim: | 5. The method of claim 1 , wherein said waste stream further comprises butane. |
| Claim: | 6. The method of claim 1 , wherein Ce and Zr are present in said oxide support material in a 1:1 mole ratio. |
| Claim: | 7. The method of claim 1 , wherein said oxide support material consists of 20 mole % La-stabilized Al 2 O 3 and 80 mole % Zr-stabilized CeO 2 . |
| Claim: | 8. The method of claim 1 , wherein the oxide support material also functions as a binder. |
| Claim: | 9. The method of claim 1 , where the catalyst composition is supported on a substantially inert substrate material, wherein the substrate is a flow-through monolith. |
| Claim: | 10. The method of claim 9 , wherein the waste stream is a tail gas from a purified terephthalic acid production process. |
| Claim: | 11. The method of claim 1 , wherein the waste stream further contains CO and the CO is also oxidized. |
| Claim: | 12. The method of claim 2 , wherein one or more of the methyl acetate, methane, benzene, methanol, methyl ethyl ketone, butane, and butene is oxidized. |
| Claim: | 13. A method as claimed in claim 1 , wherein the waste stream comprises water vapor in an amount of 1.5 mole percent to 5 mole percent. |
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| Other References: | Chen et al, “High temperature thermal stabilization of alumina modified by lanthanum species”, Applied Catalysis A: General 205 (2001) pp. 159-172. cited by examiner James J. Spivey, “Complete Catalytic Oxidation of Volatile Organics,” Ind. Eng. Chem. Res., vol. 26, No. 11, Nov. 1987, pp. 2165-2180. cited by applicant J. J. Spivey et al., “Literature Review: Deactivation of Catalysts in the Oxidation of Volatile Organic Compounds,” Catalysis Today, vol. 11, No. 4, Jan. 22, 1992, pp. 465-500. cited by applicant M. Törncrona et al., “Low temperature catalytic activity of cobalt oxide and ceria promoted Pt and Pd:—influcence of pretreatment and gas composition,” Applied Catalysis B: Environmental, vol. 14, 1997, pp. 131-145. cited by applicant Francesca Zamar et al., “CeO2-based Solid Solutions with the Fluorite Structure as Novel and Effective Catalysts for Methane Combustion,” J. Chem. Soc., Chem. Commun., 1995, pp. 965-966. cited by applicant Manon M. R. Feijen-Jeurissen et al., “Mechanism of catalytic destruction of 1,2-dichloroethane and trichloroethylene over γ-Al2O3 and γ-Al2O3-supported chromium and palladium catalysts,” Catalysis Today, vol. 54, No. 1, Nov. 26, 1999, pp. 65-79. cited by applicant George R. Lester, “Catalytic destruction of hazardous halogenated organic chemicals,” Catalysis Today, vol. 53, No. 3, Nov. 5, 1999, pp. 407-418. cited by applicant G. Sinquin et al., “Perovskites as polyvalent catalysts for total destruction of C1, C2 and aromatic chlorinated volatile organic compounds,” Catalysis Today, vol. 54, No. 1, Nov. 26, 1999, pp. 107-118. cited by applicant Zhou Xueliang et al, edited, “Handbook of Fine Chemical Products—Catalyst”, Fine Chemical Industry Publishing Center of Chemical Industry Press, the 1st in Nov. 2002, publication date: Nov. 30, 2002, p. 153 paragraph 1 from the bottom). cited by applicant |
| Primary Examiner: | Nguyen, Ngoc-Yen |
| رقم الانضمام: | edspgr.10792647 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |