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Fischer-Tropsch synthesis catalyst prepared by using composite sol as silicon source, and preparation method and application thereof

A technology of Fischer-Tropsch synthesis and composite sol, which is applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc. It can solve the problems of unsuitable iron-based catalysts for Fischer-Tropsch synthesis, and the final effect is not particularly significant. , to achieve excellent reaction stability, easy large-scale production, and high reactivity

Active Publication Date: 2015-07-22
SYNFUELS CHINA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method does not substantially change the SiO 2 The structure of the carrier, the final effect is not particularly significant
More importantly, Fischer-Tropsch synthesis iron catalysts are often prepared by precipitation method, and the carrier SiO 2 Generally, it is introduced in the form of sol, so the preparation method of the composite carrier reported is not suitable for the preparation of iron-based catalysts for Fischer-Tropsch synthesis

Method used

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  • Fischer-Tropsch synthesis catalyst prepared by using composite sol as silicon source, and preparation method and application thereof
  • Fischer-Tropsch synthesis catalyst prepared by using composite sol as silicon source, and preparation method and application thereof
  • Fischer-Tropsch synthesis catalyst prepared by using composite sol as silicon source, and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0073] Take by weighing 212.6 kilograms of ferric nitrate nonahydrate, 5.7 kilograms of copper nitrate trihydrate, and 35.8 kilograms of 50wt% manganese nitrate solution and dissolve them in deionized water to prepare a 25.92wt% mixed nitrate solution for subsequent use. It consists of: Fe: Mn: Cu=100:19.6:5.3; 19.8 kg of sodium silicate was weighed to prepare a 10wt% sodium silicate solution, which was passed through 001×7 strongly acidic styrene system with a pH value of 6-7 at a flow rate of 25mL / min. Cation exchange resin column, the silicic acid solution is passed through 201×7 strong basic styrene-based anion exchange resin with a pH value of 7-8 under the condition of a flow rate of 25mL / min to obtain purified Silicic acid solution, take 7.8 kg of zirconium nitrate and prepare a 10wt% solution, add this solution to the above-mentioned purified silicic acid solution, stir and mix evenly, and age at 35°C for 10 hours to obtain a transparent composite sol, which consists of...

Embodiment 2

[0077] Take by weighing 212.6 kilograms of ferric nitrate nonahydrate, 5.7 kilograms of copper nitrate trihydrate, and 35.8 kilograms of 50wt% manganese nitrate solution and dissolve them in deionized water to prepare a 25.92wt% mixed nitrate solution for subsequent use. It consists of: Fe: Mn: Cu=100:19.6:5.3; Weigh 26.5 kg of sodium silicate to prepare a 10wt% sodium silicate solution, and pass it through the 001×7 strong acidic styrene system with a pH value of 6-7 at a flow rate of 25mL / min. Cation exchange resin column, 201×7 strongly basic styrene-based anion exchange resin column with a pH value of 7-8 to prepare a silicic acid solution with pH=4-5, weigh 3.2 kg of boric acid and prepare a 10wt% solution , add this solution to the above silicic acid solution, stir and mix evenly, and then age at 55°C for 50h to obtain a transparent composite sol, which consists of: SiO 2 : B=100:10; add the composite sol to the above mixed nitrate solution, and stir well; take the ammon...

Embodiment 3

[0079] Take by weighing 212.6 kilograms of ferric nitrate nonahydrate, 5.7 kilograms of copper nitrate trihydrate, and 35.8 kilograms of 50wt% manganese nitrate solution and dissolve them in deionized water to prepare a 25.92wt% mixed nitrate solution for subsequent use. It consists of: Fe: Mn: Cu=100:19.6:5.3; Weigh 1.96 kg of 200-mesh silicon powder, add it to 5.00wt% NaOH solution at 60°C and 100 L, stir and hydrolyze for 5 hours, and adjust the pH value to obtain a silica sol with pH=3-4 , Weigh 6.5 kg of cerium nitrate hexahydrate and prepare a 10wt% solution, add this solution to the above silica sol, stir and mix evenly, and age at 35°C for 10 hours to obtain a transparent composite sol, which consists of: SiO 2: Ce=100:50; Add the composite sol into the above-mentioned mixed nitrate solution, and stir well; take the ammonia solution with a concentration of 19.6wt%, preheat to 20°C, and keep stirring at 50°C and pH value Continuous co-precipitation at 9.0; aging for 120...

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Abstract

The invention provides a Fischer-Tropsch synthesis catalyst prepared by using composite sol as a silicon source, and a preparation method and an application thereof. The main active component of the Fischer-Tropsch synthesis catalyst is Fe, and the catalyst also comprises a transition metal promoter M, a potassium promoter and a composite carrier X-SiO2. The X-SiO2 composite soil is the precursor of the composite carrier X-SiO2, and X is selected from at least one of Al, Zr, B, Ce and Ti. The X-SiO2 composite soil is used as the silicon source to substitute traditional silica sol in order to prepare the Fischer-Tropsch synthesis catalyst. The method is simple to operate, is easy to implement, and is suitable for large-scale industrial production; and the catalyst provided by the invention has the advantages of large surface area, high mechanical strength, and easy reduction-carbonization, so the activity and the reaction stability of the catalyst are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a Fischer-Tropsch synthesis catalyst prepared by using composite sol as a silicon source, a preparation method and application thereof. Background technique [0002] Fischer-Tropsch synthesis refers to the process of converting synthesis gas into hydrocarbons and chemicals. Synthesis gas can be obtained by gasification of carbon-containing resources such as coal, natural gas, and biomass. Due to the depletion of petroleum resources and the increasingly prominent environmental protection issues, Fischer-Tropsch synthesis technology has received more and more attention in recent years. Catalysts commonly used in the Fischer-Tropsch synthesis process include Fe, Co, Ru, and Ni. Among them, Ru is only suitable for basic research due to its expensive price, and Ni-based catalysts are due to CH 4 The selectivity is too high to have industrial application valu...

Claims

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Application Information

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IPC IPC(8): B01J23/889C10G2/00
Inventor 杨勇青明王洪王珏白云坡任利荣王有良巩月伟郑林李永旺
Owner SYNFUELS CHINA TECH CO LTD
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