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Palladium oxide complex for insulated cylinders and preparation method

A technology of palladium oxide and composites, which is applied in the field of palladium oxide composites and preparations for insulating gas cylinders, and can solve problems such as substandard air tightness of insulating gas cylinders

Inactive Publication Date: 2018-05-04
芜湖瑞德机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the welding process has been continuously improved in the prior art, there are still situations where the airtightness of the insulating gas cylinder does not meet the standard after being used for a period of time

Method used

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  • Palladium oxide complex for insulated cylinders and preparation method

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preparation example Construction

[0013] The invention provides a method for preparing a palladium oxide composite for an insulated gas cylinder, comprising:

[0014] 1) Paste reaction of palladium oxide, cyclodextrin and water to obtain pasting system;

[0015] 2) Add nickel source, tin source, neodymium oxide, dysprosium oxide, butyl lithium, cetyltrimethylammonium bromide, and hydrazine hydrate to the pasting system for hydrothermal reaction, then filter and dry to prepare get cured;

[0016] 3) The cured product is ball milled to prepare a palladium oxide composite for insulating gas cylinders.

[0017] In step 1) of the present invention, the amount of each material can be selected within a wide range, but in order to make the palladium oxide composite have more excellent hydrogen absorption capacity, preferably, in step 1), palladium oxide , cyclodextrin, water weight ratio is 10:4-7:20-30.

[0018] In step 1) of the present invention, the amount of each material can be selected in a wide range, but i...

Embodiment 1

[0029] 1) Paste reaction of palladium oxide (average particle size: 40nm), cyclodextrin, and water in a weight ratio of 10:5:25 (reaction temperature is 55°C, reaction time is 5h) to obtain a gelatinization system;

[0030] 2) Add nickel source (nickel acetate), tin source (tin tetrachloride), neodymium oxide, dysprosium oxide, butyllithium, cetyltrimethylammonium bromide, and hydrazine hydrate to the pasting system for Hydrothermal reaction (carried out in a closed environment, the reaction temperature is 160 ° C, the reaction time is 7 hours), then filtered and dried (the drying temperature is 105 ° C, the drying time is 2.5 hours) to obtain a cured product (gelatinization system, The weight ratio of nickel source, tin source, neodymium oxide, dysprosium oxide, butyllithium, cetyltrimethylammonium bromide, and hydrazine hydrate is 100:10:3:0.5:0.4:0.09:3:13);

[0031] 3) Ball mill the cured product (the mass ratio of large balls to small balls is 2:1, the mass ratio of grind...

Embodiment 2

[0033] 1) Paste reaction of palladium oxide (average particle size: 30nm), cyclodextrin, and water in a weight ratio of 10:4:20 (reaction temperature is 50°C, reaction time is 4h) to obtain a gelatinization system;

[0034] 2) Add nickel source (nickel nitrate), tin source (tributyltin chloride), neodymium oxide, dysprosium oxide, butyllithium, cetyltrimethylammonium bromide, and hydrazine hydrate to the pasting system To carry out hydrothermal reaction (in a closed environment, the reaction temperature is 140 ° C, the reaction time is 6 hours), and then filtered and dried (the drying temperature is 100 ° C, the drying time is 2 hours) to obtain a cured product (paste system , nickel source, tin source, neodymium oxide, dysprosium oxide, butyllithium, cetyltrimethylammonium bromide, and hydrazine hydrate in a weight ratio of 100:8:2:0.2:0.3:0.05:2:11) ;

[0035] 3) Ball mill the cured product (the mass ratio of large balls to small balls is 2:0.8, the mass ratio of grinding b...

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Abstract

The invention discloses a palladium oxide complex for insulated cylinders and a preparation method. The preparation method comprises the following steps: 1), performing a gelatinization reaction on palladium oxide, cyclodextrin and water to obtain a gelatinized system; 2), adding a nickel source, a tin source, neodymium oxide, dysprosium oxide, butyllithium, cetyltrimethylammonium bromide and hydrazine hydrate into the gelatinized system for a hydrothermal reaction, and then filtering and drying to obtain a solidified substance; 3), performing ball milling on the solidified substance to obtainthe palladium oxide complex for the insulated cylinders. The palladium oxide complex for the insulated cylinders can effectively absorb hydrogen; moreover, the preparation method has the advantages of single process and easiness in obtainment of raw materials.

Description

technical field [0001] The invention relates to a heat-insulating gas cylinder, in particular to a palladium oxide composite for a heat-insulating gas cylinder and a preparation method. Background technique [0002] The insulated gas cylinder is a device commonly used in existing industries or laboratories, and it is used to hold gases, such as liquefied gas, helium, nitrogen, hydrogen, etc. The most basic requirement of insulating gas cylinders is to have excellent airtightness and heat insulation performance, because the gas contained in it is either harmful to the environment or human body, or is flammable and explosive. No matter what kind of gas it is, once it is insulated Leakage of hot gas cylinders can cause immeasurable losses and damages. [0003] At present, the insulating gas cylinder is composed of an inner tank and an outer jacket. Whether it is the inner tank, the jacket itself, or the inner tank and the jacket, they are all assembled by welding, and the wel...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/30B01D53/02F17C1/12
CPCB01D53/02B01D2253/25B01D2257/108B01J20/06F17C1/12Y02E60/32
Inventor 李千林石宝军
Owner 芜湖瑞德机械科技有限公司
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