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Method for manufacturing catalyzer

A manufacturing method and catalyst technology, which are applied to catalyst carriers, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problems of low catalyst performance, high catalyst cost, poor stability, etc., and achieve high activity and resistance to beta radiation. Strong and stable performance

Inactive Publication Date: 2008-01-23
柯香文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this manufacturing method is that the process is simple, and the disadvantage is that the catalyst performance is low
Another method is to directly deposit metal active components on hydrophobic organic polymers (such as polyethylene-divinylbenzene copolymers). The hydrophobic catalysts prepared by this method have higher activity and better radiation resistance, but poor stability.
The third method is to first disperse the active component platinum on the carrier (such as activated carbon, silicon dioxide), and then irradiate the tetrafluoroethylene monomer to form a film and deposit it on the Pt-C. high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1. Preparation of polymer porous resin spheres

[0015] ①Water phase

[0016] Add 1000ml of water into the distillation bottle, and then add 1.0g of polyvinyl alcohol, heat with stirring at a temperature of 55°C for 1 hour to dissolve the polyvinyl alcohol.

[0017] ② Organic phase

[0018] Add 80 g of toluene to the beaker, then add 0.96 g of azobisisobutyronitrile to dissolve the initiator, then add 112 g of dichloroethane and 72 g of divinylbenzene, and stir to fully mix the organic phase.

[0019] ③Feeding

[0020] The temperature of the water phase was controlled at 50°C, and the organic phase was slowly added under the water surface under stirring at a rotation speed of 120 rpm, and the addition was completed within 4 minutes.

[0021] ④ Polymerization

[0022] After the addition, the temperature was raised from 50°C to 70°C, the temperature was raised slowly for about 1.5 hours, and the temperature was kept at 70°C for 14 hours of polymerization. Then the te...

Embodiment 2

[0032] 1. Preparation of polymer porous resin spheres

[0033] ①Water phase

[0034] Add 1000ml of water in the distillation bottle, then add 2.0g of polyvinyl alcohol, heat with stirring at 45°C for 2 hours to dissolve the polyvinyl alcohol.

[0035] ② Organic phase

[0036] Add 80 g of toluene to the beaker, then add 1.04 g of azobisisobutyronitrile to dissolve the initiator, then add 128 g of dichloroethane and 88 g of divinylbenzene, and stir to fully mix the organic phase.

[0037] ③Feeding

[0038] The temperature of the water phase was controlled at 50°C, and the organic phase was slowly added under the water surface under stirring at a rotation speed of 200 rpm, and the addition was completed within 2 minutes.

[0039] ④ Polymerization

[0040] After the feeding is completed, the temperature is raised from 50°C to 80°C, the temperature is raised slowly for about 2 hours, and the polymerization is carried out at 80°C for 10 hours. The temperature was then raised to...

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Abstract

The invention relates to a production method of a hybrogen to water (liquid) hybrogen isotope exchange catalyst, which is characterized in that: firstly, make polyvinyl alcohol aqueous solution as compound aqueous phase and toluol and other organic solvent as pore agent, under the catalyzing of ABIN initiator to realize mass polymerization of divinylbenzene to produce polymer porous resin ball, then add the polymer porous resin ball into chloroplatinic acid ethanol solution to soak according to certain proportion, after drying, restoring and cooling to produce lyophobic catalyst. The invention is characterized in that: the technics has good repeatability, high catalyst activity, strong anti-Beta irradiance, and wide application range, which is not only suitable for extracting pure tritium in light water containing tritium of light water reactor, but also suitable for extracting pure tritium in heavy water containing tritium of heavy water reactor, also used for extracting pure tritium in liquid radioactivity outflow (nuclear waste) of nuclear power reactor, and can be used to produce heavy water by the way of hybrogen to water (liquid) dual temperature exchanging method.

Description

technical field [0001] The invention relates to a catalyst manufacturing method, in particular to a hydrogen-water (liquid) hydrogen isotope exchange catalyst manufacturing method. Background technique [0002] Currently, there are three main methods for producing hydrogen-water (liquid) hydrogen isotope exchange catalysts. One method is to prepare platinum carbon powder first, then mechanically mix it with polytetrafluoroethylene powder in a certain proportion, and then press it into a film. Among them, polytetrafluoroethylene is used not only as a water enhancer, but also as an adhesive. The advantage of this manufacturing method is that the process is simple, and the disadvantage is that the catalyst performance is low. Another method is to directly deposit metal active components on hydrophobic organic polymers (such as polyethylene-divinylbenzene copolymers). The hydrophobic catalysts prepared by this method have higher activity and better radiation resistance, but po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J32/00B01J27/13
Inventor 张敬坤徐经宇
Owner 柯香文
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