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A room temperature air-breathing composite material and its products

A composite material and normal temperature technology, which is applied in gas treatment, other chemical processes, separation methods, etc., can solve the problems of poor oxygen absorption capacity and limited catalytic effect of getter materials, and achieve high water absorption rate, human body and environment friendly, gas The effect of balancing depression

Active Publication Date: 2022-08-05
XIHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent CN109692652A previously applied by the applicant discloses a nano-composite getter at room temperature that does not require high-temperature activation, which is composed of nano-calcium oxide powder, palladium oxide and at least one metal oxide among copper, cobalt and nickel, and titanium dioxide and cerium oxide. The mixture is packed in a breathable polymer bag in the form of powder, which is used to absorb the residual gas in the vacuum insulation material at room temperature, but the oxygen absorption capacity of the getter material is poor, and the catalytic effect is limited, and the overall performance needs to be improved.

Method used

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  • A room temperature air-breathing composite material and its products
  • A room temperature air-breathing composite material and its products
  • A room temperature air-breathing composite material and its products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of 1# getter product comprising the room temperature getter composite material of the present invention.

[0028] Use a precision balance to weigh 100 g of commercial calcium oxide powder with a purity of 96% and a particle size of 325 mesh, 0.30 g of copper nitrate powder, 1.30 g of titanic acid, 2.25 g of cerium nitrate, and 0.044 g of palladium nitrate powder; all the aforementioned ingredients are poured into a 400 ml beaker, Add 300 ml of deionized water, stir with a magnetic stirrer for 30 min at 70 °C; dry the mixed solution in an oven at a baking temperature of 120 °C and a baking time of 108 h; place the dried mixture in an atmosphere furnace under nitrogen protection Calcining at 600°C for 2h and 1050°C for 1h; grinding the calcined product into powder to obtain a normal temperature gettering composite powder according to the present invention, the mass ratio of each component is about calcium oxide: (copper oxide + cuprous oxide) : titanium dioxid...

Embodiment 2

[0030] Preparation of 2# absorbent article comprising the room temperature inhalation composite material of the present invention.

[0031] Use a precision balance to weigh 100 g of commercial calcium oxide powder with a purity of 96% and a particle size of 325 mesh, 0.30 g of copper nitrate powder, 1.30 g of titanic acid, 2.25 g of cerium nitrate, and 0.044 g of palladium nitrate powder; all the aforementioned ingredients are poured into a 400 ml beaker, Add 300 ml of deionized water, stir with a magnetic stirrer for 30 min at 70 °C; dry the mixed solution in an oven at a baking temperature of 120 °C and a baking time of 108 h; place the dried mixture in an atmosphere furnace under nitrogen protection calcined at 300°C for 2h and 1050°C for 1h; grind the calcined product into powder to obtain a normal temperature gettering composite powder according to the present invention, the mass ratio of each component is about calcium oxide: (copper oxide + cuprous oxide) : titanium dio...

Embodiment 3

[0033] Preparation of 3# getter products comprising the room temperature getter composite material of the present invention.

[0034] Use a precision balance to weigh 100 g of commercial calcium oxide powder with a purity of 96% and a particle size of 325 mesh, 0.30 g of copper nitrate powder, 1.30 g of titanic acid, 2.25 g of cerium nitrate, and 0.044 g of palladium nitrate powder; all the aforementioned ingredients are poured into a 400 ml beaker, Add 300 ml of deionized water, stir with a magnetic stirrer for 30 min at 70 °C; dry the mixed solution in an oven at a baking temperature of 120 °C and a baking time of 108 h; place the dried mixture in an atmosphere furnace under nitrogen protection calcined at 600° C. for 2 hours; the calcined product is ground into powder to obtain a normal temperature gettering composite material powder according to the present invention, and the mass ratio of each component is about calcium oxide: copper oxide: titanium dioxide: cerium oxide: ...

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Abstract

The invention belongs to the technical field of getter materials, and in particular relates to a normal temperature getter composite material and a product thereof. The normal temperature getter composite material of the present invention is a multi-component mixture, including alkaline earth metal oxides, rare earth metal oxides, transition metals, and transition metal oxides. High water absorption rate, thorough inhalation, and lower gas equilibrium pressure, which can effectively maintain a good vacuum environment. The addition of transition metals not only improves the inhalation capacity, but also greatly enhances the catalytic effect through the synergistic effect with metal oxides, thereby helping The overall performance of the composite getter material is greatly improved. In addition, the getter composite material does not contain toxic substances, is friendly to the human body and the environment, has low application conditions, and has great promotion value and application prospects.

Description

technical field [0001] The invention belongs to the technical field of getter materials, and in particular relates to a normal temperature getter composite material and a product thereof. Background technique [0002] The getter material is mainly used in the fields of electric vacuum devices and vacuum insulated containers. In the field of electric vacuum, zirconium-based or barium-based alloy getter materials are mainly used. These getter materials need to be activated or evaporated at high temperature above 400 °C. They are suitable for vacuum environments with pressures less than 0.01Pa, and the total amount of gettering is small. . In the field of vacuum insulation, such as storage and transportation Dewar containers for cryogenic liquids, pipelines for cryogenic fluids, vacuum insulation cups, vacuum insulation materials, etc., in addition to some high-temperature gettering materials, modified molecular sieves and desiccants are mainly used. , transition metal oxides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J23/89B01D53/86B01D53/46B01D53/62
CPCB01J20/041B01J20/06B01J20/02B01J23/894B01J23/8986B01J23/8993B01D53/8671B01D53/8687B01D53/864B01J2220/4806B01J2220/42B01D2253/1124B01D2253/1122B01D2257/108B01D2257/104B01D2257/502B01D2257/504B01D2255/2045B01D2255/2065B01D2255/1023B01D2255/20761B01D2255/20707B01D2255/2073B01D2255/20753B01D2255/20769Y02C20/40
Inventor 邸小波刘蒙蒙张建军
Owner XIHUA UNIV
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