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Synthetic gas-to-oil catalyst using mesoporous molecular sieve SBA-16 as carrier and method for preparing catalyst

A mesoporous molecular sieve and catalyst technology, which can be used in molecular sieve catalysts, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc. Effects of hydrothermal stability, narrow pore size distribution, and large specific surface area

Inactive Publication Date: 2012-08-15
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to control the size of the carrier particles prepared by the precipitation method, the particle size is uneven, and the pore size and pore volume are small; when the impregnation method is used to load the active components and additives, the two are unevenly dispersed on the surface of the carrier, which is easy to block the carrier pores , easy to agglomerate during calcination; the above two factors will affect the activity of the catalyst and the C 5 + Selectivity adversely affects

Method used

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  • Synthetic gas-to-oil catalyst using mesoporous molecular sieve SBA-16 as carrier and method for preparing catalyst
  • Synthetic gas-to-oil catalyst using mesoporous molecular sieve SBA-16 as carrier and method for preparing catalyst
  • Synthetic gas-to-oil catalyst using mesoporous molecular sieve SBA-16 as carrier and method for preparing catalyst

Examples

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Effect test

Embodiment 1

[0025] A kind of preparation method using SBA-16 as the carrier cobalt-based catalyst for Fischer-Tropsch synthesis, the steps comprising:

[0026] (1) Synthesis of mesoporous molecular sieve SBA-16: under constant temperature conditions of 35°C, take EO with M=5800 20 PO 70 EO 20 i.e. EO of P123 0.8g and M=12600 106 PO 70 EO 106 That is, add 2.36g of F127 into a 250mL conical flask, use 134mL deionized water as a solvent, and magnetically stir until it is completely dissolved; add 22mL of 37wt% concentrated hydrochloric acid to the above conical flask, and continue stirring at 35°C. After the solution is mixed evenly , poured into 13mL tetraethyl orthosilicate namely TEOS, continued to stir for 1h, at this time the molar ratio of each substance in the mixed solution was P123: F127: TEOS: HCl: H 2 O=0.0016:0.0037:1.0:4.4:144, and move the solution to a stainless steel reaction kettle with a Teflon substrate, that is, a Teflon bottle, first stand at 35°C for 24h, and then ...

Embodiment 2

[0029] A kind of preparation method using SBA-16 as the carrier cobalt-based catalyst for Fischer-Tropsch synthesis, the steps comprising:

[0030] (1) Synthesis of mesoporous molecular sieve SBA-16: under constant temperature conditions of 35°C, take EO with M=5800 20 PO 70 EO 20 i.e. EO of P123 0.8g and M=12600 106 PO 70 EO 106 That is, add 2.36g of F127 into a 250mL conical flask, use 134mL deionized water as a solvent, and magnetically stir until it is completely dissolved; add 22mL of 37wt% concentrated hydrochloric acid to the above conical flask, and continue stirring at 35°C. After the solution is mixed evenly , poured into 13mL tetraethyl orthosilicate namely TEOS, continued to stir for 1h, at this time the molar ratio of each substance in the mixed solution was P123: F127: TEOS: HCl: H 2 O=0.0016:0.0037:1.0:4.4:144, and move the solution to a stainless steel reaction kettle with a Teflon substrate, that is, a Teflon bottle, first stand at 35°C for 24h, and then ...

Embodiment 3

[0033] A kind of preparation method using SBA-16 as the carrier cobalt-based catalyst for Fischer-Tropsch synthesis, the steps comprising:

[0034] (1) Synthesis of mesoporous molecular sieve SBA-16: under constant temperature conditions of 35°C, take EO with M=5800 20 PO 70 EO 20 i.e. EO of P123 0.8g and M=12600 106 PO 70 EO 106 That is, add 2.36g of F127 into a 250mL conical flask, use 134mL deionized water as a solvent, and magnetically stir until it is completely dissolved; add 22mL of 37wt% concentrated hydrochloric acid to the above conical flask, and continue stirring at 35°C. After the solution is mixed evenly , poured into 13mL tetraethyl orthosilicate namely TEOS, continued to stir for 1h, at this time the molar ratio of each substance in the mixed solution was P123: F127: TEOS: HCl: H 2 O=0.0016:0.0037:1.0:4.4:144, and move the solution to a stainless steel reaction kettle with a Teflon substrate, that is, a Teflon bottle, first stand at 35°C for 24h, and then ...

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PUM

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Abstract

The invention discloses a method for preparing a synthetic gas-to-oil (F-T reaction) cobalt-based catalyst by using mesoporous molecular sieve SBA-16 as a carrier, and application of the catalyst to synthetic gas-to-oil reaction. The highly ordered mesoporous structure of the catalyst is kept, and an original cubic symmetric structure of the carrier SBA-16 is also kept. The catalyst prepared by the method has a high active cobalt capacity, so that high activity of the catalyst is ensured, and the catalyst has the advantages of low CH4 selectivity, high C5+ selectivity and fine reaction stability.

Description

technical field [0001] The invention relates to an indirect coal liquefaction technology for producing liquid fuel by catalytic conversion of synthesis gas, which belongs to the field of energy and chemical industry. It is mainly suitable for the catalytic conversion of synthesis gas (carbon monoxide and hydrogen) to produce C in the Fischer-Tropsch reaction. 5 -C 12 A liquid hydrocarbon fuel provides a catalyst for Fischer-Tropsch synthesis and a preparation method thereof. Background technique [0002] Fischer-Tropsch synthesis is one of the indirect coal liquefaction technologies, which uses synthesis gas (CO and H 2 ) as a raw material, the process of synthesizing liquid fuel under catalyst and appropriate reaction conditions. The key to Fischer-Tropsch synthesis is the use of catalysts, which usually include the following components: active metals (Group VIII transition metals), oxide supports or structural aids (SiO 2 , Al 2 o 3 etc.), chemical additives (alkali ...

Claims

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Application Information

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IPC IPC(8): B01J29/03C10G2/00
Inventor 苏海全丁宁曾尚红张晓红王磊于世泳
Owner INNER MONGOLIA UNIVERSITY
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