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Catalyst for treatingw aste unsymdimethylhydrazine and its prepn process and application

A waste unsymmetrical dimethyl hydrazine and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of no harmless treatment catalysts, etc., and achieve the effect of large processing capacity

Inactive Publication Date: 2004-06-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] No patent related to the harmless treatment catalyst involving the liquid propellant unsymmetrical dimethylhydrazine was found through the patent search

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Catalyst "A" composition is Pd / Al 2 o 3 , Pd content is 2% (weight). Catalyst "A" was prepared as follows:

[0033] (a) by weighing 0.42 grams of PdCl 2 Dissolved in 10.5 ml of deionized water, impregnated with 12.3 g of carrier Al 2 o 3 .

[0034] (b) The Pd-impregnated catalyst obtained in step a was naturally dried at room temperature (about one week), then dried at 110° C. for 4 hours, and then calcined at 800° C. in an air atmosphere for 6 hours to obtain catalyst “A”.

example 2

[0036] Catalyst "B" composition is Pd-Pt / Al 2 o 3 , the Pd content is 2% by weight, and the Pt content is 0.6% by weight. The source of Pd and Pt is PdCl 2 t and h 2 PtCl 6 . The preparation process of catalyst "B" is the same as that of catalyst "A", first configure PdCl as catalyst "A" 2 and H 2 PtCl 6 The aqueous solution was mixed, otherwise the procedure was the same as for Catalyst "A".

example 3

[0038] Catalyst "C" composition is Pd-Pt-Rh / Al 2 o 3 , the Pd content is 2% by weight, the Pt content is 0.6% by weight, and the Rh content is 0.1% by weight. The source of Pd, Pt and Rh is PdCl 2 , H 2 PtCl 6 , RhCl 3 . Catalyst "C" was prepared in the same manner as catalyst "B".

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PUM

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Abstract

The catalyst for treating waste unsym-dimethylhydrazine includes one or several of Pd, Pt and Rh as active component; one or several of IA, IIA, IIIB, VIII and RE elements as assistant; and Al2O3 or SiO2 as carrier. The preparation process includes the main steps of: soaking the carrier with solution containing the active component and assistant; drying and roasting the soaked carrier. The soaking step may be one of carrying active component before carrying assistant or one of carrying active component after carrying assistant. The catalyst may be used in the innocuous treatment of catalytically burning waste unsym-dimethylhydrazine or other hydrazine propellant. The addition of the assistant can improve the reaction and stabilizing performance of the catalyst effectively, and the carrier in the catalyst can raise the utilization of noble metal material effectively.

Description

technical field [0001] The invention relates to a catalyst for treating waste unsymmetrical dimethylhydrazine. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the application of the above-mentioned catalyst in the harmless treatment of waste unsymmetrical dimethylhydrazine catalytic combustion. Background technique [0004] 1,1-Dimethylhydrazine, also known as unsymmetrical dimethylhydrazine, is a colorless liquid with a pungent odor. In the air, unsymmetrical dimethylhydrazine is easily oxidized slowly and turns yellow. At present, unsymmetrical dimethylhydrazine is mainly produced by the chloramine method, using sodium hypochlorite, ammonia water and dimethylamine as raw materials. [0005] <chemistry num="001"> <chem file="02156026_cml001.xml" / > < / chemistry> [0006] The main use of unsymmetrical dimethylhydrazine is as a rocket propellant. Long-term stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/38A62D101/06B01J23/56B01J23/58B01J23/63B01J23/74B01J23/89B01J37/08
Inventor 丁云杰刁成际吕元金明
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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