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Load type manganese and copper series deoxidizer and preparation method and application thereof

A deoxidizer and load-type technology, applied in the field of deoxidizer, can solve the problems of poor mechanical strength, easy pulverization, unstable deoxidizer, etc., and achieve the effect of high mechanical strength, not easy pulverization, and not easy to overheat

Active Publication Date: 2012-08-22
BEIJING PEKING UNIV PIONEER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1990s, Beijing Peking University Pioneer Technology Co., Ltd. developed the carbon monoxide purification technology by pressure swing adsorption around the copper-containing carbon monoxide selective adsorbent. It is deeply harmed by trace oxygen, because trace oxygen makes the core of pressure swing adsorption - carbon monoxide Selective sorbent performance becomes unstable
However, the deoxidizer obtained in this way is as unstable as the manganese deoxidizer. In addition, there are problems such as poor mechanical strength for large-scale molding, easy overheating during pretreatment and reduction, and easy pulverization during use.
These all make copper-manganese composite oxides limited in industrial application as deoxidizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 50g 50% (mass percentage concentration) Mn (NO 3 ) 2 solution, 16gCu(NO 3 ) 2 ·3H 2 O and 3.0 g of cobalt nitrate were mixed and dissolved in 50 ml of water to obtain a mixed solution with a total volume of 100 mL. Add this mixed solution drop by drop to 100g 2 / g of commercially available bar Al 2 o 3 In the carrier, shake while shaking to mix well. Dried at 120°C for 10h after impregnated at 60°C for 16h; baked at 550°C for 10h in a muffle furnace. When in use, feed nitrogen and hydrogen with a volume ratio of 100:2, slowly raise the temperature to 200°C, and -1 Cool to room temperature after reduction under the condition of 24 hours, obtain the load-type copper-manganese composite oxide deoxidizer provided by the present invention, wherein the structural formula of the active composite oxide is MnO2 ·(CuO) 0.48 ·(CoO) 0.12 .

[0026] Use the above-mentioned deoxidizer to deoxidize ordinary hydrogen (a mixed gas composed of 99.5% hydrogen by volume and 0.5%...

Embodiment 2

[0028] Mix 100g (dry weight) of commercially available 13X powder with 1L 1mol / L Mn(NO 3 ) 2 The solution was exchanged twice at 100°C, filtered, washed and dried. 60g 50% (mass percent concentration) Mn (NO 3 ) 2 solution, 16gCu(NO 3 ) 2 ·3H 2 O and 5.0g of ammonium molybdate were mixed and dissolved in 100ml of water to obtain a mixed solution with a total volume of 160mL. Knead 150g manganese-exchanged 13X raw powder, 20g attapulgite and this mixed solution repeatedly for 2 hours, and then extrude. The extruded strips were dried at 120°C for 12h and baked at 550°C for 10h in a muffle furnace. When in use, feed nitrogen and hydrogen with a volume ratio of 100:5, slowly raise the temperature to 180°C, and -1 Cool to room temperature after reduction under the condition of 24 hours, obtain the load-type copper-manganese composite oxide deoxidizer provided by the present invention, wherein the structural formula of the active composite oxide is MnO 2 ·(CuO) 0.42 ·(MoO ...

Embodiment 3

[0031] Mix 100g (dry weight) of commercially available NaY powder with 1L 1mol / L Cu(NO 3 ) 2 The solution was exchanged twice at 25°C, filtered, washed and dried. With 55g 50% (mass percent concentration) Mn (NO 3 ) 2 solution, 16gCu(NO 3 ) 2 ·3H 2 O and 3.0 g of ferric nitrate were mixed and dissolved in 80 ml of water to obtain a mixed solution with a total volume of 140 mL. Knead 120g copper-exchanged NaY raw powder, 15g pseudo-boehmite and this mixed solution repeatedly for 2 hours, and then extrude. The extruded strips were dried at 120°C for 12 hours and baked in a muffle furnace at 550°C for 12 hours. When in use, feed nitrogen and hydrogen with a volume ratio of 100:20, slowly raise the temperature to 150°C, and keep the space velocity at 500h -1 Cool to room temperature after reduction under the condition of 24 hours, obtain the load-type copper-manganese composite oxide deoxidizer provided by the present invention, wherein the structural formula of the active...

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Abstract

The invention discloses a preparation method and application of a load type manganese and copper series deoxidizer. The load type manganese and copper series deoxidizer comprises a carrier and an active compound oxide, wherein the carrier is alumina and X-type or Y-type molecular sieves; the active compound oxide comprises a copper oxide, a manganese oxide and a metal assistant oxide; the spherical alumina carrier can be directly soaked with a mixed solution of an active component to obtain the strip-shaped deoxidizer; and the powder of the X-type or Y-type molecular sieve needs to carry out ion exchange firstly and then is kneaded with the mixed solution of the active component and a binding agent, extruded into strips and roasted to obtain the formed strip-shaped deoxidizer. The formed strip-shaped deoxidizer needs to be reduced and activated at certain temperature when in use, can not only remove the tiny oxygen contained in inert atmosphere, but also continuously remove the tiny oxygen contained in higher-concentration to high-purity carbonic oxide, and has high mechanical strength, difficult pulverization in the using process and difficult temperature runaway of pretreatment reduction.

Description

technical field [0001] The invention relates to a deoxidizer, in particular to a loaded copper-manganese deoxidizer and its preparation method and application. Background technique [0002] In the fields of materials, electronics, and chemical industry, the existence of trace oxygen is often harmful. In order to eliminate these oxygen, people have invented a series of deoxidizers such as copper, silver, palladium, nickel, manganese and molybdenum. In the 1990s, Beijing Peking University Pioneer Technology Co., Ltd. developed the carbon monoxide purification technology by pressure swing adsorption around copper-containing carbon monoxide selective adsorbents. It was deeply harmed by trace oxygen, because trace oxygen made the core of pressure swing adsorption—carbon monoxide The performance of the selective adsorbent becomes unstable. But above-mentioned deoxidizer except the molybdenum series molybdenum oxide deoxidizer that Chinese patent CN1302686A discloses, other all c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/16B01J20/32B01D53/047
Inventor 蒋化张佳平唐伟谢有畅
Owner BEIJING PEKING UNIV PIONEER TECH
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