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Catalyst for decomposing hydrogen phosphide gas as well as preparation method and application thereof

A catalyst and phosphine technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problems of expensive, unsuitable for industrial production, etc., and achieve cost Inexpensive, highly dispersed, easy to prepare

Inactive Publication Date: 2014-01-15
ZHOUKOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, noble metals such as Pd and new supports such as CNTs, although applied to catalysts can improve the performance of catalysts, they are expensive and not suitable for practical application in industrial production.

Method used

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  • Catalyst for decomposing hydrogen phosphide gas as well as preparation method and application thereof
  • Catalyst for decomposing hydrogen phosphide gas as well as preparation method and application thereof
  • Catalyst for decomposing hydrogen phosphide gas as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 6gCo(NO 3 ) 2 ·6H 2 O and 2gNi(NO 3 ) 2 Dissolve 6H2O in 200mL distilled water, add 12.3g SiO in sequence 2 and 4gNa 3 C 6 h 5 o 7 2H 2 O (sodium citrate), fully ultrasonic (400W, 20min) and stirring; under the condition of water bath (80℃) and stirring, add concentrated ammonia water drop by drop to the above solution until the pH reaches 8; Suction filtration, repeated washing with distilled water, drying at 80°C, and grinding into a powdery precursor; calcining the precursor at 400°C for 4 h to obtain the product. The ICP detection showed that the molar ratio of Co, Ni and O in the product was CoNi 0.33 o 1.67 / SiO 2 , the loading of active components of double metal oxides is 15%.

Embodiment 2

[0028] Take 2gCo(NO 3 ) 2 ·6H 2 O and 6gNi(NO 3 ) 2 ·6H 2 O and dissolved in 200mL distilled water, add 11.9g SiO 2 and 2gNa 3 C 6 h 5 o 7 2H 2 O (sodium citrate), fully ultrasonic (400W, 20min); under the conditions of water bath (60℃) and stirring, add concentrated ammonia water drop by drop to the above solution until the pH reaches 8; the resulting jelly is vacuum filtered , washed repeatedly with distilled water, dried at 80°C, and ground into a powdery precursor; the precursor was calcined at 400°C for 4 h to obtain the product. It has been detected that the molar ratio of Co, Ni and O in the product is CoNi 3 o 4.33 / SiO 2 , the loading of active components of double metal oxides is 15%.

Embodiment 3

[0030] Take 4gCo(NO 3 ) 2 ·6H 2 O and 4gNi(NO 3 ) 2 ·6H 2 O and dissolved in 200mL distilled water, add 12.2g SiO 2 and 3gNa 3 C 6 h 5 o 7 2H 2 O (sodium citrate), fully ultrasonic (400W, 20min); under the conditions of water bath (70℃) and stirring, add concentrated ammonia water drop by drop to the above solution until the pH reaches 7; the obtained jelly is vacuum filtered , washed repeatedly with distilled water, dried at 80°C, and ground into a powdery precursor; the precursor was calcined at 400°C for 4 h to obtain the product. It has been detected that the molar ratio of Co, Ni and O in the product is CoNiO 2.33 / SiO 2 , the loading of active components of double metal oxides is 15%.

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Abstract

The invention relates to a catalyst for decomposing hydrogen phosphide gas as well as a preparation method and application thereof. The catalyst uses SiO2 and SiC as carriers, and uses cobalt and nickel bimetal oxides as active components. The mol ratio of the nickel element to the cobalt element in the catalyst is (1-10) : (1-10); the mol ratio of the total amount of two metals to the oxygen element is 1: (1-1.3); the mass percent of two active components is 10-50% of the catalyst. The catalyst is directly applied in the control of industrial hydrogen phosphide tail gas pollute emission and the technical process of using hydrogen phosphide to prepare high-purity yellow phosphorus and hydrogen, has high low-temperature activity, good stability, and is simple in preparation and low in cost. The yellow phosphorus can be obtained by introducing hydrogen phosphide gas to perform the normal pressure reaction at 300-400 DEG C.

Description

technical field [0001] The invention relates to a catalyst for decomposing phosphine gas and its preparation method and application, in particular to a high-efficiency and low-cost catalyst based on SiO 2 Or SiC as a carrier, a supported catalyst with cobalt-nickel double metal oxide as an active component, directly used for industrial phosphine tail gas pollutant emission control and the process of preparing yellow phosphorus and hydrogen from phosphine. Background technique [0002] Phosphine is a highly toxic gas, which is not only a direct threat to human life, but also has an indirect greenhouse effect. With the rapid development of my country's economy, a large amount of phosphine tail gas is inevitably produced in the process of industrial production. The existing industrial phosphine tail gas treatment technology has shortcomings such as incomplete tail gas treatment and low economic added value. Therefore, it is of great significance to explore high-efficiency and ...

Claims

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Application Information

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IPC IPC(8): B01J27/224B01J23/755C01B25/047
Inventor 李俐俐盛东峰胡春红陈璨武安泉
Owner ZHOUKOU NORMAL UNIV
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