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Alumina carbonyl sulfide hydrolysis catalyst and preparation method thereof

A hydrolysis catalyst, alumina technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as activity decline, and achieve the effect of avoiding pore reduction and good COS hydrolysis conversion activity.

Active Publication Date: 2017-06-20
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Industrial hydrolysis catalysts are mainly γ-Al loaded with active components 2 o 3 base catalysts, but in the late stage of the reaction usually there will be different degrees of activity decline

Method used

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  • Alumina carbonyl sulfide hydrolysis catalyst and preparation method thereof
  • Alumina carbonyl sulfide hydrolysis catalyst and preparation method thereof
  • Alumina carbonyl sulfide hydrolysis catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] like Figure 1a and Figure 1b As shown, the alumina carbonyl sulfide hydrolysis catalyst is a step-pore alumina-based catalyst, and the step-pore alumina-based catalyst has macropores, mesopores and micropores and is loaded with K 2 CO 3 (Potassium Carbonate) as a stepped pore catalyst.

[0046] like figure 2 As shown, it shows the process flow of the method for preparing alumina carbonyl sulfide hydrolysis catalyst according to Embodiment 1 of the present invention. The method includes the following steps:

[0047] (1) Provide soluble aluminum salt, polystyrene microspheres, mesoporous template agent P123, potassium oxalate, oxalic acid, ethylene glycol, methanol, absolute ethanol, fatty alcohol polyoxyethylene ether, distilled water, among which in this example poly Styrene microspheres select monodisperse polystyrene microsphere emulsion for use, and distilled water can be replaced by deionized water. Those skilled in the art should understand that polystyrene ...

Embodiment 2

[0072] The chemical materials used in Example 2 of the present invention are: aluminum nitrate nonahydrate, monodisperse polystyrene microsphere emulsion, mesoporous template agent P123, ethylene glycol, methanol, and absolute ethanol.

[0073] The concrete preparation method of the aluminum oxide carbonyl sulfide hydrolysis catalyst of embodiment two is as follows:

[0074] (1) Prepare the solution of alumina precursor

[0075] Weigh 37.82g±0.001g of aluminum nitrate nonahydrate, measure 20mL±0.01mL of methanol, and measure 30mL±0.01mL of ethylene glycol; All placed in a beaker, then stirred with a stirrer until completely dissolved to obtain an aluminum solution with a concentration of 2mol / L;

[0076] (2) Preparation of the solution of the mesoporous templating agent

[0077] Accurately weigh 25.00g ± 0.001g of mesoporous template agent P123, and then dissolve the weighed P123 in 50mL of absolute ethanol to obtain a solution of mesoporous template agent (P123);

[0078] ...

Embodiment 3

[0083] The chemical materials used in Example 3 of the present invention are: aluminum nitrate nonahydrate, monodisperse polystyrene microsphere emulsion, mesoporous template agent P123, potassium carbonate, ethylene glycol, methanol, absolute ethanol and distilled water.

[0084] The concrete preparation method of the aluminum oxide carbonyl sulfide hydrolysis catalyst of embodiment three is as follows:

[0085] (1) Prepare the solution of alumina precursor

[0086]Weigh 37.82g±0.001g of aluminum nitrate nonahydrate, measure 20mL±0.01mL of methanol, and measure 30mL±0.01mL of ethylene glycol; All placed in a beaker, then stirred with a stirrer until completely dissolved to obtain an aluminum solution with a concentration of 2mol / L;

[0087] (2) Preparation of the solution of the mesoporous templating agent

[0088] Accurately weigh 25.00g ± 0.001g of mesoporous template agent P123, and then dissolve the weighed P123 in 50mL of absolute ethanol to obtain a solution of mesopo...

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Abstract

The invention discloses an alumina carbonyl sulfide hydrolysis catalyst and a preparation method thereof and belongs to the technical field of desulfurization catalysts. The alumina carbonyl sulfide hydrolysis catalyst is a gamma-Al2O3 based carbonyl sulfide hydrolysis catalyst. According to the alumina carbonyl sulfide hydrolysis catalyst, polystyrene microspheres are taken as a macroporous template, P123 serves as a mesoporous template agent, a soluble aluminum salt serves as a catalyst carrier precursor, and a potassium oxalate coordination solution serves as an active ingredient precursor. According to the alumina carbonyl sulfide hydrolysis catalyst and the preparation method thereof provided by the invention, the organic microspheres with controllable sizes are taken as the macroporous template, and mesopores are regulated by the mesoporous template agent. Meanwhile, the potassium oxalate coordination solution serves as the active ingredient precursor, so that the catalyst becomes the gamma-Al2O3 based COS hydrolysis catalyst with macroporous, mesoporous and microporous cascade pore structures, and the catalyst has rich micro-pores for providing a reaction surface and also has an appropriate cascade pore duct for promoting smooth export of the reaction product.

Description

technical field [0001] The invention relates to the technical field of desulfurization catalysts, in particular to an alumina carbonyl sulfide hydrolysis catalyst and a preparation method thereof. Background technique [0002] Carbonyl sulfide is the main form of organic sulfur in carbon-based industrial raw material gas. In order to improve the service life of the synthesis catalyst, carbonyl sulfide is one of the components that must be removed from the raw material gas. At present, the most widely used carbonyl sulfide removal technology is the hydrolysis method. The reaction temperature of the hydrolysis method is low, and hydrogen is not required to participate in the reaction. The requirements for the process conditions are relatively simple. [0003] Industrial hydrolysis catalysts are mainly γ-Al loaded with active components 2 o 3 base catalysts, but usually there will be different degrees of activity decline in the later stage of the reaction. It is generally be...

Claims

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Application Information

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IPC IPC(8): B01J21/04B01J35/10
CPCB01J21/04B01J35/633B01J35/615
Inventor 梁丽彤樊惠玲黄冠赵颖睿寇佳伟沈芳上官炬黄伟
Owner TAIYUAN UNIV OF TECH
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