Preparation method of Ni-loaded honeycomb ceramic catalyst suitable for VPCE

Abstract

The invention discloses a preparation method of a Ni-loaded honeycomb ceramic catalyst suitable for VPCE. The preparation method comprises the following steps: (1) drying honeycomb ceramic at 150 DEG C, and taking the dried honeycomb ceramic as a carrier; (2) weighing a saturated Ni(NO3)2 water solution with the water absorbing capacity isometric to that of the carrier, then putting the carrier into the water solution, dipping for more than 12h until the saturated Ni(NO3)2 water solution is completely absorbed, and uniformly distributing Ni ions into the carrier; (3) roasting the carrier for more than 2 hours until nitro is removed under the condition that air atmosphere exists, and the temperature is at least 350 DEG C; and (4) reducing the carrier subjected to nitro removal under the hydrogen atmosphere with the concentration being 10%, thus obtaining the honeycomb ceramic catalyst. According to the preparation method, the process is simple, the period is short, the cost is low, the strength is high, the catalytic effect is obvious, and a good foundation is provided for researching VPCE and the catalyst, so that the preparation method is suitable for promotion and application.

Description

technical field [0001] The invention relates to a catalyst, in particular to a method for preparing a Ni-loaded honeycomb ceramic catalyst suitable for VPCE. Background technique [0002] Vapor-phase catalytic exchange (VPCE) can be used for initial concentration in the production of heavy water, and detritium removal of heavy water in reactors. It first appeared in the production of heavy water in Manhattan, USA. In the 1970s, the Lane-Langevin Institute in France adopted VPCE+cryogenic distillation (CD) technology to extract tritium from heavy water, which was the first industrial application of VPCE to extract tritium from heavy water. [0003] A large amount of tritium water will be produced in the fusion reactor, and these tritium water must meet the standards allowed for discharge before they can be discharged. The International Thermonuclear Experimental Reactor (ITER) program plans to use the VPCE reactor to reduce tritium in water, so that the concentration of high...

AI Technical Summary

Problems solved by technology

[0014] In view of the above-mentioned technical deficiencies, the present invention provides a method for preparing a Ni-loaded honeycomb ceramic catalyst suitable for VPCE, which can well solve the problems of high cost, complex process, high pressure drop, low strength and low specific surface area of ​​known VPCE catalysts. Large, poor binding force with active metals, etc.

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