Metallocene alloy catalyst and preparation method thereof

A technology of alloy catalyst and metallocene, which is applied in the field of metallocene alloy catalyst and its preparation, can solve the problems such as the decline of catalytic activity, and achieve the effects of good rigidity and transparency, high strength and improved performance

Active Publication Date: 2016-08-10
金丰贵金属材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these metals can improve the stability of copper catalysts, after a period of use, the metals will leach out in the reaction solution and the catalytic activity will decrease.

Method used

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0024] A metallocene alloy catalyst, which consists of the following components by weight percentage:

[0025] Metal copper 40%-65%;

[0026] Metal aluminum 30%-50%;

[0027] Metallocene 10%-20%;

[0028] One of the rare metals cobalt, zirconium and tungsten accounts for 1.2%-2.2%;

[0029] The sum of the percentages of the above components is 100%.

[0030] Preferably, the metallocene is zirconocene dichloride.

[0031] Above-mentioned catalyst is made according to the following steps:

[0032] (1) Correctly weigh the above four types of metals according to the formula;

[0033] (2) Preheat metal copper and metal aluminum to 600°C in a heating furnace;

[0034] (3) Add another two types of metals and heat up to 1200°C to form a molten state;

[0035] (4) putting the m...

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Abstract

The invention discloses a metallocene metal alloy catalyst, which is composed of the following components by weight percent: 40-65% of metallic copper, 30-50% of metallic aluminum, 10-20% of metallocene and 1.2-2.2% of one of rare metals cobalt, zirconium and tungsten. According to the metallocene metal alloy catalyst and a preparation method thereof disclosed by the invention, the metallocene is added into a copper-aluminum alloy substrate, and because the metallocene polymer has good processability, high strength and good rigidity and transparency, the temperature-resistant and chemicals-resistant properties are improved remarkably. In particular, compared with the traditional solid catalyst, the metallocene catalyst has the advantages that the polymer with random stereoregularity can be obtained only by changing the symmetry of a ligand. Therefore, the metallocene catalyst has great advantages in olefin polymerization.

Description

technical field [0001] The invention relates to a metallocene alloy catalyst used for dehydrogenating and oxidizing diethanolamine to generate iminodiacetate and a preparation method thereof. Background technique [0002] Iminodiacetic acid is an important fine chemical intermediate, mainly used in the synthesis of herbicide glyphosate, but also in the synthesis of dyes, food additives, special synthetic resins and water treatment agents. Iminodiacetic acid is mainly produced by chloroacetic acid method, hydrogen cyanide method and diethanolamine method. The first two types of processes have problems such as complex synthetic routes, harsh synthetic conditions, and serious environmental pollution. The diethanolamine method uses diethanolamine and alkali metal hydroxides as raw materials to directly oxidize and dehydrogenate iminodiacetate under the action of a catalyst. This production process is economical, environmentally friendly, low in production cost, high in product ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/6592C08F4/646
Inventor 刘必倩包亮
Owner 金丰贵金属材料(江苏)有限公司
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