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Copper-containing materials

A copper-aluminum, copper oxide technology, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, other chemical processes, etc., can solve problems such as low stability

Inactive Publication Date: 2006-06-28
JOHNSON MATTHEY PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbonate ammonium complexes of nickel and cobalt used in the aforementioned EP 0 092 878 or WO 96 04 072 have low stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Dissolve 250g ammonium carbonate in 600ml ammonia water (concentration 35%, specific gravity 0.88), then slowly add 244g basic copper carbonate (the Cu of 55wt%, CuCO 3 / Cu(OH) 2 weight ratio of 1.2) and stirred at room temperature until dissolved to prepare an impregnation solution. The solution was then filtered.

[0033] The BET surface area (A) of 200g with a length of 3mm and a diameter of 1.2mm is 294m 2 / g, pore volume (V p From the desorption branch of the nitrogen physical adsorption isotherm under the relative pressure of 0.98) be 0.65ml / g, average pore diameter (4V p / A) A gamma-alumina extrudate of 88 Å (carrier S-A) is immersed in 400 ml of impregnation solution at room temperature. The impregnated extrudates were then filtered, excess solution was removed and dried overnight at 120°C. This dried material was designated Product 1-A-1.

[0034] 150 g of product 1-A-1 was then immersed in 300 ml of said impregnating solution for 10 minutes, and then exc...

Embodiment 2

[0037] The procedure of Example 1 was repeated, but using a BET surface area of ​​111 m 2 θ-alumina extrudates (carrier S-B) with a length of 3 mm and a diameter of 1.2 mm, with a pore volume of 0.45 ml / g and an average pore diameter (4V / A) of 163 Å. The products were named 2-B-1, 2-B-2, 2-B-3 and 2-B-3c.

Embodiment 3

[0039] The procedure of Example 2 was repeated, but with a slightly smaller concentration of the copper complex solution, therefore, 700 ml of 30% ammonium hydroxide solution was used instead of 600 ml of 35% ammonium hydroxide. Simultaneously the dried mass was calcined at 300° C. after each impregnation. The product calcined after three impregnations and after each impregnation was designated 3-B-3c.

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Abstract

Copper / alumina compositions for uses as e.g. catalysts are made by impregnating a porous transition alumina support with an aqueous solution of a copper ammine carbonate complex, draining off any excess of the impregnating solution, and then heating the impregnated support to a temperature above 80° C. to decompose the complex thereby depositing a basic copper carbonate compound on the surfaces of the pores of transition alumina support. After reduction, the composition has a high copper surface area, expressed per unit weight of copper in the composition.

Description

technical field [0001] This invention relates to copper-containing materials, particularly compositions comprising copper-containing species supported on porous transitional alumina. Background technique [0002] Copper-containing compositions (wherein some or all of the copper is in the form of elemental copper or in the form of oxides, i.e. oxides of divalent and / or monovalent copper, or in the form of other copper-containing species, e.g., sulfides, alkalis Carbonates, etc.) are widely used in industrial processes as catalysts or adsorbents. For example, compositions wherein some or all of the copper is elemental copper are commonly used as catalysts for reactions involving hydrogen. As examples, shift reactions in which carbon monoxide reacts with water vapor to form carbon dioxide and hydrogen; alcohol synthesis reactions in which a mixture of hydrogen and carbon monoxide and / or carbon dioxide react to form methanol or higher chain alcohols; hydrogenation reactions; hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/72B01J21/04B01J37/18B01J20/08B01J20/32B01J37/02B01J37/03
CPCB01J37/03B01J20/32B01J20/3236B01J21/04B01J20/28061B01J20/28073B01J23/72B01J35/0053B01J20/08B01J20/3078B01J20/3007B01J20/223B01J37/0203B01J20/0277B01J20/28083B01J20/28004B01J20/0237B01J20/3204B01J20/06B01J35/392
Inventor C·M·洛克
Owner JOHNSON MATTHEY PLC
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