Novel palladium-thenium catalytic material and preparation method thereof
A technology of palladium ruthenium alloy and formula, which is applied in the field of palladium ruthenium new catalytic material and its preparation, can solve the problems of impracticability
Inactive Publication Date: 2011-04-06
KUNMING INST OF PRECIOUS METALS
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Problems solved by technology
For example, the successful application of niobium, chromium, zirconium, tungsten, nickel and other transition group elements in PdRu alloys, and the successful application of niobium, iron, tungsten, zirconium and other transition group elements added to Pd have been reported, but they cannot be completely replaced. Target of Pd-Ru alloy
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[0020] The novel palladium ruthenium alloy of the present invention, its chemical composition (weight %) is: 1.0~20.0Ru, 0.1~5.0Nb, 0.1~5.0Zr, 0.1~5.0Mo, 0.1~5.0Ta, 0.1~5.0Yb, 0.1~5.0 Gd, 0.1-5.0Tb, the balance being Pd.
[0021] 2, the preparation method of palladium ruthenium alloy, it is characterized in that comprising following processing step in sequence:
[0022] (1) Select alloy raw materials with a purity >99.95%, and alloy them in a vacuum intermediate frequency or high frequency melting furnace according to the formula design requirements of the alloy chemical composition, vacuum degree: 1×10 -3 Above Pa;
[0023] (2) After the superheating temperature of the melt reaches 100°C-200°C, vacuum cast it into plates or rods. The size of the plate is ≠6-12mm×20-50mm, the size of the bar is Φ8mm-Φ12mm, and the cooling rate of the melt is>1×10 4 K / s;
[0024] (3) PdRuNbZrMoTaYbGdTb multi-element rare metal alloy material is finally prepared;
[0025] (4) The weight of ...
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Abstract
The invention relates to a novel rare precious metal palladium-ruthenium alloy catalytic material and a preparation method thereof, belonging to novel catalytic materials. The palladium-ruthenium alloy comprises the following chemical components by weight percent: 1.0-20.0 of Ru, 0.1-5.0 of Nb, 0.1-5.0 of Zr, 0.1-5.0 of Mo, 0.1-5.0 of Ta, 0.1-5.0 of Yb, 0.1-5.0 of Gd, 0.1-5.0 of Tb, and the balance of Pd. The preparation method is as follows: mixing palladium (Pd), ruthenium (Ru), niobium (Nb), zirconium (Zr), molybdenum (Mo), tantalum (Ta), ytterbium (Yb), gadolinium (Gd), terbium (Tb) with other alloying elements in accordance with requirements of alloyed design ingredients; preparing the components into a PdRuNbZrMoTaYbGdTb multi-element alloy; and then carrying out forging, rolling, drawing, heat treatment and other processing techniques on the alloy to finally obtain products the shape of which can be platelike, rodlike or rodlike. The alloy material has the characteristics of high hardness, oxidation resistance, significant hydrogen catalytic action, strong corrosion resistance, strong arc ablation resistance and the like, is a catalytic material with excellent performance and has wide application prospects in chemical industry, metallurgy, petroleum, electrical industry, aviation, aerospace, marine, automotive industry and other industries.
Description
technical field [0001] The invention relates to a novel palladium ruthenium catalytic material and a preparation method thereof, belonging to the field of new materials and new technologies. Background technique [0002] Due to the development needs of chemical industry, metallurgy, petroleum, electrical, aviation, aerospace, shipbuilding, automobile and other industries, a new palladium ruthenium catalyst with the characteristics of high hardness, oxidation resistance, high hydrogen catalytic efficiency, corrosion resistance and strong arc ablation resistance Materials have become urgently needed materials, and palladium-ruthenium alloy materials are required to have: (1) high catalytic efficiency for hydrogen purification; (2) excellent comprehensive high-temperature mechanical properties; (3) good manufacturing and processing properties; (4) oxidation resistance and corrosion resistance; (5) Excellent resistance to arc ablation; (6) By adding multiple rare metal elements ...
Claims
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IPC IPC(8): C22C5/04C22C1/02B01J23/652
Inventor 谢明杨有才刘满门张吉明陈永泰崔浩陈松
Owner KUNMING INST OF PRECIOUS METALS