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Preparation method of novel yolk-shell structure nano catalytic reactor

A nano-catalysis and reactor technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of Fe-based catalyst activity reduction and improve conversion The effect of increasing the rate, increasing the contact area, and improving the reactivity

Active Publication Date: 2018-01-02
海门市创豪工业设计有限公司
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Problems solved by technology

However, the CO conversion rate of Fe-based catalysts for Fischer-Tropsch synthesis needs to be improved, and with the progress of Fischer-Tropsch synthesis, the activity of Fe-based catalysts decreases significantly.

Method used

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  • Preparation method of novel yolk-shell structure nano catalytic reactor
  • Preparation method of novel yolk-shell structure nano catalytic reactor

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Embodiment

[0044] ① Liquid phase reaction synthesis: Add analytically pure ferrous nitrate, o-ethylphenylhydrazine hydrochloride, potassium stearate and erbium chloride to deionized water to form ferrous nitrate with a concentration of 180g / L, o-ethylbenzene The concentration of hydrazine hydrochloride is 40g / L, the concentration of potassium stearate is 50g / L and the concentration of erbium chloride is the reaction solution of 30g / L. After mechanical stirring for 30 minutes, the reaction solution is poured into the reaction kettle and kept at 170°C. 13 hours.

[0045] ②Solid-phase sintering: When the reaction kettle is cooled to room temperature, put the product into the muffle furnace, heat to 400°C and sinter for 3 hours under the protection of nitrogen, and the obtained particle powder is Er-modified metallic iron nanoparticles.

[0046] ③Equipment of assembly solution: add analytically pure dimethylglyoxime, 8-hydroxyquinoline, Er-modified metal iron nanoparticles and Pt nanoparticl...

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Abstract

The invention relates to a preparation method of a novel Yolk-shell structure nano catalytic reactor, the method comprising: the synthesis of Er modified metallic iron nanoparticles, the assembly of Pt nanoparticles on the surface of Er modified metallic iron nanoparticles, and the modification of Er Synthesis of the amorphous silica layer on the surface of Fe-supported Pt particles, synthesis of the outer layer of silica crystals on the surface of amorphous silica, and selective removal of the silica layer on the surface of Er-modified Fe-loaded Pt particles. The surface of the Er-modified Fe-iron nanoparticles of the present invention supports Pt nanoparticles as cores, and the gap between the microporous SiO2 shell and the Er-modified Fe-iron nanoparticles surface-supported Pt nanoparticles cores serves as a reaction place for Fischer-Tropsch synthesis. Er-modified Fe nanoparticles and Pt nanoparticles produce a catalytic synergistic effect, effectively improving the reactivity of Fischer-Tropsch synthesis; the structural characteristics of Yolk-shell can make the catalytic material maintain high activity for a long time.

Description

technical field [0001] The invention relates to the field of chemical catalytic materials, in particular to a Yolk-shell structure Er modified Fe loaded Pt@SiO 2 Preparation method of nano catalytic reactor. Background technique [0002] With the development of society and economy, the contradiction between the shortage of oil reserves and the ever-increasing demand for energy has become increasingly acute. my country's oil resources are relatively scarce, and coal storage resources are relatively abundant. The conversion of CO and H2 reaction gases converted from coal into liquid fuels under the action of catalysts through Fischer-Tropsch synthesis can meet my country's rising energy demand. The activity of catalytic materials is the key to improving the yield of Fischer-Tropsch synthesis products. Fe-based catalysts have the advantages of low impact on product selectivity and high olefin yield in the Fischer-Tropsch synthesis process, and are widely used in Fischer-Trops...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F9/24B01J23/89
CPCB01J23/894B22F9/24B22F1/17B22F1/16B01J35/396B01J35/393
Inventor 赵明陈睿王宇何广平
Owner 海门市创豪工业设计有限公司
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