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Catalyst for preparing high-quality gasoline fraction by virtue of syngas high selectivity and preparation method thereof

A high-selectivity, gasoline fraction technology, applied in the field of Fischer-Tropsch synthesis catalyst and its preparation, achieves the effects of flexible source, improved selectivity and remarkable effect

Inactive Publication Date: 2011-10-12
WANHUA IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst can be used to obtain isoparaffin-based C 5 -C 12 , its selectivity can reach up to 55%, but the methane selectivity of this type of catalyst is mostly more than 15%

Method used

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  • Catalyst for preparing high-quality gasoline fraction by virtue of syngas high selectivity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Weigh 0.085g NaNO 3 , add 100ml H 2 In O, the preparation concentration is 0.01mol L -1 NaNO 3 aqueous solution. Weigh 8.0 g of MOR molecular sieve with a silicon-aluminum ratio of 12 (manufactured by Nankai University Catalyst Factory, NKF-12) into the above solution, and stir at 30° C. for 20 min. Filter, wash with deionized water, and dry at 100°C for 5h. Weigh 5.0g of treated molecular sieves and add to a concentration of 1.0mol L -1 Ammonium nitrate aqueous solution, stirred at 50°C for 1h, washed with deionized water, dried at 100°C for 15h, and calcined at 500°C for 5h in an air atmosphere to obtain a molecular sieve carrier, denoted as MOR-0.01 M.

[0051] Weigh 0.8856g Co(NO 3 ) 2 ·6H 2 O was dissolved in 25ml deionized water to form a cobalt nitrate solution, and then 0.0165g RuCl was added 3 ·3H 2 O, after stirring and dissolving, weigh 2.0g MOR-0.01M molecular sieve and add it to the above solution. Stir at room temperature for 10 h, let stand fo...

Embodiment 2

[0056] Weigh 0.085g NaNO 3 , add 100ml H 2 In O, the preparation concentration is 0.01mol L -1 NaNO 3 aqueous solution. Weigh 8.0 g of Beta molecular sieve (manufactured by Catalyst Factory of Nankai University, NKF-6) with a silicon-aluminum ratio of 25 and add it to the above solution, and stir at 30° C. for 30 min. Filter, wash with deionized water, and dry at 100°C for 5h. Weigh 5.0g of treated molecular sieves and add to a concentration of 1.0mol L -1 Ammonium nitrate aqueous solution, stirred at 50°C for 1h, washed with deionized water, dried at 100°C for 15h, and calcined at 500°C for 5h in an air atmosphere to obtain a molecular sieve carrier, denoted as Beta-0.01 M.

[0057] Weigh 0.8856g Co(NO 3 ) 2 ·6H 2 O is dissolved in 20ml of deionized water to make cobalt nitrate solution, then add 0.0781g KNO 3 , after stirring and dissolving, weigh 2.0g Beta-0.01M molecular sieve and add it to the above solution. Stir at room temperature for 4h, let stand for 10h, ...

Embodiment 3

[0062] Weigh 0.085g NaNO 3 , add 100ml H 2 In O, the preparation concentration is 0.01mol L -1 NaNO 3 aqueous solution. Weigh 8.0 g of ZSM-5 molecular sieve (manufactured by Catalyst Factory of Nankai University, NKF-5) with a silicon-aluminum ratio of 38 and add it to the above solution, and stir at 30° C. for 30 min. Filter, wash with deionized water, and dry at 100°C for 5h. Weigh 5.0g of treated molecular sieves and add to a concentration of 1.0mol L -1 Ammonium nitrate aqueous solution, stirred at 50°C for 2h, washed with deionized water, dried at 100°C for 15h, and calcined at 500°C for 5h in an air atmosphere to obtain a molecular sieve carrier, denoted as ZSM-5 -0.01M.

[0063] Weigh 1.6605g Co(NO 3 ) 2 ·6H 2 O was dissolved in 30ml of deionized water to form a cobalt nitrate solution, and then 0.0674g of NaNO was added 3 , after stirring and dissolving, weigh 2.0g ZSM-5-0.01M molecular sieve and add it to the above solution. Stir at room temperature for 4h,...

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Abstract

The invention provides a catalyst for preparing a high-quality gasoline fraction by virtue of syngas high selectivity and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 1-30% of metallic cobalt, 0.01-5% of assistant elements and the balance of molecular sieve. The catalyst has good selectivity to isoparaffin with 5-11 carbon atoms and quite low selectivity to the waxy hydrocarbons with more than 20 carbon atoms, so that the catalyst can be used for preparing high-quality gasoline fuels, and the catalyst carbon deposition can be avoided or obviously reduced. In addition, the invention further provides the preparation method of the catalyst.

Description

technical field [0001] The invention relates to a Fischer-Tropsch synthesis catalyst and a preparation method thereof, more specifically, a Fischer-Tropsch synthesis catalyst of high-quality isoparaffin-based high-quality gasoline fractions and a preparation method thereof. Background technique [0002] Fischer-Tropsch synthesis is the process of converting synthesis gas into hydrocarbons through a catalytic reaction. Fischer-Tropsch synthesis involves the formation of alkanes and alkenes, accompanied by oxygenate formation and water gas shift reactions. The reactant of Fischer-Tropsch synthesis, that is, synthesis gas, can be converted from coal, natural gas, coal bed methane, biomass, etc. through gasification or reforming. Products produced by Fischer-Tropsch synthesis include clean liquid fuels such as gasoline, diesel, kerosene, basic chemical raw materials such as low-carbon olefins, and high value-added chemicals such as advanced waxes. In recent years, with the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/46B01J29/48B01J29/14B01J29/16B01J29/76B01J29/78C10G2/00
Inventor 王野康金灿张磊张庆红成康翟庆阁丁建生华卫琦楼银川
Owner WANHUA IND GRP
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