Inert gas purification catalyst, raw material composition and preparation method

A raw material composition and inert gas technology, applied in the direction of inert gas compounds, physical/chemical process catalysts, nitrogen compounds, etc., can solve the problems of high cost, non-renewable, unfavorable industrial use, etc., achieve low production cost, increase adsorption, Remove the effect of deep depth

Active Publication Date: 2020-11-10
大连华邦化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The other is a composite metal alloy as a getter, but the getter is a one-time removal of impurities in the gas, which is costly and non-renewable, which is not conducive to industrial use

Method used

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  • Inert gas purification catalyst, raw material composition and preparation method
  • Inert gas purification catalyst, raw material composition and preparation method
  • Inert gas purification catalyst, raw material composition and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) After grinding 9.5g of sodium chromate and 2.5g of ammonium phosphate in a ball mill, add them to 300ml of ethanol solution and process them with ultrasonic waves for 2 hours. (2) Weigh 86 g of basic nickel carbonate, 13 g of ammonium metavanadate and 8.5 g of basic zinc carbonate, grind them in a ball mill, mix them, and add the mixture to the ethanol mixture containing sodium chromate and ammonium phosphate. Stir at room temperature (25° C.) for 6 hours, collect the solids by filtration, and dry the catalyst active component and auxiliary agent mixture. (3) Weigh 20 g of beta molecular sieve and fully mix with the dried catalyst active component and auxiliary agent mixture, and finally use aluminum sol with an aluminum content of 5% as a binder for molding. (4) After forming, the catalyst was dried naturally in an oven at 110° C. overnight, then transferred to a muffle furnace with nitrogen protection gas, and roasted at 350° C. for 6 hours to obtain catalyst No. ...

Embodiment 2

[0038] (1) After grinding 14g of sodium chromate and 5g of ammonium phosphate in a ball mill, add them to 300ml of ethanol solution, and process them with ultrasonic waves for 2 hours. (2) Weigh 187g of basic nickel carbonate, 13g of ammonium metavanadate and 5.2g of basic zinc carbonate, grind them in a ball mill, mix them, and add the mixture to the ethanol mixture containing sodium chromate and ammonium phosphate. Stir at room temperature (25° C.) for 6 hours, collect the solids by filtration, and dry the catalyst active component and auxiliary agent mixture. (3) Weigh 20 g of beta molecular sieve and fully mix with the dried catalyst active component and auxiliary agent mixture, and finally use aluminum sol with an aluminum content of 5% as a binder for extrusion molding. (4) The molded catalyst was dried naturally in an oven at 110°C overnight, then transferred to a muffle furnace with nitrogen protection gas, and roasted at 350°C for 6 hours to obtain catalyst No. 2.

Embodiment 3

[0040] (1) After grinding 9.5g of sodium chromate and 2.5g of ammonium phosphate in a ball mill, add them to 300ml of ethanol solution and process them with ultrasonic waves for 2 hours. (2) Weigh 60 g of basic nickel carbonate, 23 g of ammonium metavanadate and 6.5 g of basic zinc carbonate, grind them in a ball mill, mix them, and add the mixture to the ethanol mixture containing sodium chromate and ammonium phosphate. Stir at room temperature (25° C.) for 6 hours, collect the solids by filtration, and dry the catalyst active component and auxiliary agent mixture. (3) Weigh 20 g of beta molecular sieve and fully mix with the dried catalyst active component and auxiliary agent mixture, and finally use aluminum sol with an aluminum content of 5% as a binder for extrusion molding. (4) The molded catalyst was dried naturally in an oven at 110° C. overnight, then transferred to a muffle furnace with nitrogen protective gas, and calcined at 350° C. for 6 hours to obtain catalyst N...

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Abstract

The present invention discloses an inert gas purification catalyst, a raw material composition and a preparation method, the inert gas purification catalyst comprises active components, an auxiliary agent, a carrier and a binder, each active component comprises an oxide of Ni, an oxide of V and an oxide of Zn, wherein the auxiliary agent comprises one or a mixture of more than two of a Cr compound, a P compound and an As compound. Compared with the prior art, the invention has the advantages that the active components of the catalyst are reasonably selected and non-noble metal, production costis relatively low, deep removal of different impurity gases is facilitated, and the catalysts have large specific surface areas and are evenly distributed, the active components have small particlesand high activity so that use amount of the catalyst is reduced; and operation cost and the like are saved. The invention is not only suitable for hydrogen, oxygen, nitrogen, argon, helium, neon and other bulk gases, but also suitable for purification of ethylene, propylene and other organic gases in the field of chemical industry.

Description

technical field [0001] The invention relates to the technical field of high-purity gas purification, in particular to an inert gas purification catalyst, a raw material composition and a preparation method. Background technique [0002] With the rapid development of the semiconductor industry, the production of semiconductor materials such as monocrystalline silicon and polycrystalline silicon is also particularly important. During the crystal growth process, it is necessary to introduce inert gas into the furnace to stabilize the furnace pressure and take away impurities such as volatiles and oxides to improve the stability of crystal growth and product quality. The requirement for the purity of inert gas is getting higher and higher, from the initial 99.999% to the current 99.9999999%, the requirement for gas purification materials is getting higher and higher. There are two types of methods for removing impurities used in gas industry production. One is the method of ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/78B01J27/199B01J23/86B01J35/10B01J35/02B01J20/06B01J20/28B01J20/30C01B3/50C01B3/58C01B13/02C01B21/04C01B23/00
CPCB01J29/7815B01J27/199B01J23/002B01J23/866B01J35/1019B01J35/023B01J20/06B01J20/0292B01J20/04B01J20/28061C01B3/58C01B3/508C01B13/0288C01B21/0494C01B23/0094B01J2523/00B01J2229/186C01B2210/0018C01B2210/0003C01B2210/0031C01B2210/0062C01B2210/0034C01B2210/0053C01B2210/0045C01B2210/005C01B2210/0051C01B2210/007B01J2523/27B01J2523/52B01J2523/55B01J2523/67B01J2523/847
Inventor 侯鹏李文强韩江江钱吉李世海高嵩杨瑞云赵艳东
Owner 大连华邦化学有限公司
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