Preparation method of catalyst for preparing hydrogen from hydrogen sulfide

A technology of hydrogen sulfide and catalyst, which is applied in the field of preparation of hydrogen sulfide to hydrogen catalyst, and can solve the problems of unsatisfactory catalytic activity of the catalyst and the influence of the catalytic properties of the catalyst without giving the catalyst preparation method, etc.

Active Publication Date: 2012-11-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent does not give the preparation method of the catalyst and the influence of the preparation of the catalyst on its catalytic properties
[0007] People such as Fukuda used some metal sulfides such as titanium sulfide, copper sulfide and nic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This example is used to illustrate the preparation of the catalyst.

[0041] Measure 100 mL of 1.0 mol / L potassium oxalate solution, and control the solution temperature to 60°C. Another 30 mL of 1.0 mol / L calcium nitrate solution was prepared, added to the above potassium oxalate solution, and mixed and stirred at 60° C. for 0.5 h. Then prepare 100 mL of 1.0 mol / L nickel nitrate solution, preheat it to 60°C and add it to the above mixed solution to form nickel oxalate precipitate. After the addition was complete, the mixture continued to be aged at 60° C. with stirring for 7 h. After aging, the mixture was filtered, washed with deionized water, and dried at 120° C. to obtain nickel oxalate powder. Roast the above-mentioned nickel oxalate powder at 350°C for 4 hours to obtain a black-green solid powder, press the nickel oxide powder into tablets, sieve, take 20-40 mesh particles, place them in the constant temperature zone of the reaction tube, and place them on the t...

Embodiment 2

[0043] This example is used to illustrate the preparation of the catalyst.

[0044] Adopt the same method of embodiment 1 to prepare catalyst, just the volumetric space velocity of hydrogen sulfide is 1000h -1 , The vulcanization time is 3h.

Embodiment 3

[0046] This example is used to illustrate the preparation of the catalyst.

[0047] Adopt the same method of embodiment 1 to prepare catalyst, just change potassium oxalate into sodium carbonate, change nickel nitrate into cobalt chloride, the volume space velocity of hydrogen sulfide is 120h -1 , The vulcanization time is 6h.

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Abstract

The invention relates to a preparation method of a catalyst for preparing hydrogen from hydrogen sulfide. The preparation method comprises a first step (1) of reacting a pre-precipitating agent aqueous solution and a precipitating agent aqueous solution to form a pre-precipitating turbid solution; a second step (2) of adding a metal salt-water solution into the pre-precipitating turbid solution of the first step (1), a precipitant being formed by a reaction, filtering, washing, drying and calcinating the precipitant to obtain a metal salt oxide; and a third step of (3) performing a sulphur treatment on the metal salt oxide of the second step (2), and thus a product is obtained. Cations of the pre-precipitating agent can form a precipitant with anions of the precipitating agent, wherein the solubility product of the precipitant is larger than that of a precipitant formed by metal ions and the anions of the precipitating agent; the precipitating agent is a material capable of producing materials such as OH<->, CO3 <2-> or -OOCCOO- in water; and the metal is one or more selected from VIB group and VIII group transition metals. The catalyst prepared by the method provided by the invention is a bulk phase catalyst consisting of metal sulfur oxides, is low in cost, and has high catalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for producing hydrogen from hydrogen sulfide. Background technique [0002] Hydrogen sulfide is a highly toxic gas with the smell of rotten eggs, mainly from petroleum processing and low-quality natural gas fields. With the intensification of heavy and inferior crude oil and the exploitation of a large number of inferior natural gas fields, my country's hydrogen sulfide emissions have increased year by year. The traditional method for utilizing hydrogen sulfide is the Claus method, which selectively oxidizes hydrogen sulfide into sulfur and water. In the Claus method, the sulfur element in hydrogen sulfide is converted into sulfur, and the hydrogen element is converted into low-value-added water. Hydrogen is an important raw material that must be used in oil refining, and the demand for hydrogen in refineries is increasing year by year. The traditional method of producing hydrogen is the re...

Claims

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Application Information

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IPC IPC(8): B01J27/02C01B3/06C01B31/26C01B32/72
CPCY02E60/36
Inventor 关莉莉汪颖吴佳舒兴田慕旭宏罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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