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Catalyst for preparing yellow phosphorus through catalytic decomposition of phosphine gas and preparation method thereof

A catalytic decomposition and catalyst technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of complex catalyst preparation process and required raw materials, high cost, poor stability of amorphous alloys, etc., and achieve stable activity , low cost, mild effect

Inactive Publication Date: 2013-02-20
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst also has the disadvantages of high cost, poor stability of the amorphous alloy at high temperature, complicated catalyst preparation process and required raw materials, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A Novel Catalyst FeNi for Catalytic Decomposition of Phosphine Gas to Yellow Phosphorus x B y / HNTs (x, y are the ratio of the amount of nickel, boron and iron, respectively), synthesized from soluble iron nitrate, soluble nickel nitrate, natural halloysite nanotubes (HNTs) and potassium borohydride, Its preparation method comprises the following steps:

[0028] 1) 5g HNTs and 200ml concentration of 60.7g / L ferric nitrate aqueous solution, 200ml concentration of 47g / L nickel nitrate aqueous solution are fully stirred to obtain a suspension;

[0029] 2) Heat and evaporate the suspension obtained in 1) at 100°C in a constant temperature stirrer to remove excess water to obtain a semi-dry powder;

[0030] 3) Place the semi-dry powder obtained in 2) in 100ml of potassium borohydride aqueous solution with a concentration of 60g / L, and stir at 80°C for 30min to obtain a suspension;

[0031] 4) Heat and evaporate the suspension obtained in 3) at 100°C in a constant temperat...

Embodiment 2

[0036] A Novel Catalyst FeNi for Catalytic Decomposition of Phosphine Gas to Yellow Phosphorus x / HNTs (x is the ratio of the amount of nickel element to iron element), is synthesized as raw material with soluble ferrous chloride, nickel sulfate, natural halloysite nanotube (HNTs), and its preparation method comprises the following steps:

[0037] 1) 5g of HNTs and 200ml of ferrous chloride aqueous solution with a concentration of 90.5g / L and 200ml of nickel sulfate aqueous solution with a concentration of 55.5g / L are fully stirred to obtain a suspension;

[0038] 2) Heat and evaporate the suspension obtained in 1) at 80°C in a constant temperature stirrer to remove excess water to obtain a semi-dry powder;

[0039] 3) Add the semi-dry powder obtained in 2) into 100ml of distilled water, and stir at 80°C for 30min to obtain a suspension;

[0040] 4) Heat the suspension obtained in 3), and heat at 80°C to evaporate excess water to obtain a semi-dry powder;

[0041] 5) Dry the...

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PUM

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Abstract

The invention discloses a catalyst for preparing yellow phosphorus through catalytic decomposition of phosphine gas and a preparation method thereof, and belongs to the technical fields of the discharge control technique for industrial tail gas pollutants and phosphine tail gas resource comprehensive utilization. The catalyst is characterized in that the catalyst takes fe-ni alloy containing M element or free of the M element (the M is boron or phosphorus) as an active component, takes a natural halloysite nanotube as a carrier, and has the advantages of being low in cost, high in activity, good in selectivity and the like. The preparation method includes taking soluble ferric salt and nickel salt, the natural halloysite nanotube, the compound containing the M element or free of the M element as the raw materials; and generating active components which are evenly loaded on the carrier in a nano particle form after processes of impregnation, evaporation, drying, calcinations, hydrogen reduction and the like. The preparation method is simple in process, low in cost, mild in conditions and free of pollution. According to the catalyst and the method, phosphine gas can be subjected to catalytic decomposition with a high efficiency and a low cost, and remarkable environmental and economical benefits are provided.

Description

technical field [0001] The invention relates to a catalyst for catalytically decomposing phosphine gas to prepare yellow phosphorus and a preparation method thereof. The invention belongs to the technical fields of industrial tail gas pollutant discharge control technology and comprehensive utilization of phosphine tail gas resources. Background technique [0002] At present, the impact of highly toxic phosphine on the environment has attracted more and more attention. In addition to phosphine produced in natural environments such as lake bottom or seabed sediments, landfills, excrement, methane and soil, the tail gas discharged by phosphorus chemical enterprises contains a large amount of phosphine, which is an important source of environmental air pollution in many cities . The development of high-efficiency and low-cost phosphine treatment technology is an important task for phosphorus chemical enterprises to achieve sustainable development. Among them, the catalytic de...

Claims

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Application Information

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IPC IPC(8): B01J23/755C01B25/027
Inventor 唐雪娇李俐俐
Owner NANKAI UNIV
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