CATALYST FOR STEAM REFORMING OF METHANOL

• Main Authors: HOFSTADT OTTO, KUMBERGER OTTO DR, SPRAGUE MICHAEL JOLYON DR
• Format: Patent
• Language: English
• Published: 29.06.1999
• Edition: 6
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To enhance catalyst activity to catalyst volume by using a catalyst produced by precipitating and settling a solution of a particular zinc salt and an aluminum salt, separating precipitates by filtering, washing the precipitates, removing alkali metal ions and then drying and baking the precipitates to obtain mixed oxides. SOLUTION: A solution of a zinc salt and an aluminum salt having atomic ratio of Zn to Al of 3:1 to 1:3 is allowed to precipitate and settle at a pH value of 5-12 at a temperature of 20-100 deg.C by an alkali metal carbonate solution. Precipitates are separated by filtering and alkali metal ions are removed the precipitates are baked at 250-800 deg.C to obtain mixed oxides as a catalyst. The mixed oxides are dispersed in an acid solution of a copper salt and a zinc salt wherein atomic ratio of Cu to Zn is 1:5 to 20:1 and a dispersion solution is allowed to precipitate and settle at a pH value of 6-9 at a temperature of 20-100 deg.C so as to make methanol undergo steam reforming.