Nano-array structured catalyst used for Fischer-Tropsch synthesis and preparation method and application thereof

A structured catalyst and nano-array technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, liquid hydrocarbon mixtures, etc., can solve the problem of poor carrier bonding, easy sintering, Uneven distribution of active components, etc., to avoid leaching loss, easy processability, and excellent mechanical strength

Active Publication Date: 2013-09-25
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a structured catalyst with excellent heat transfer performance, and solve the problems of uneven distribution of active components of traditional structured catalysts, easy sintering, and poor bonding with the carrier

Method used

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  • Nano-array structured catalyst used for Fischer-Tropsch synthesis and preparation method and application thereof
  • Nano-array structured catalyst used for Fischer-Tropsch synthesis and preparation method and application thereof
  • Nano-array structured catalyst used for Fischer-Tropsch synthesis and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The galvanized iron substrate (108cm 2 ) with 0.5 mol L -1Ultrasonic cleaning with hydrochloric acid for 10 minutes, then ultrasonic cleaning with absolute ethanol for 10 minutes, and then cleaning with deionized water to obtain a substrate for later use; dissolving ferric nitrate, ammonium fluoride and hexamethylenetetramine in deionized water to form a solution, wherein The concentration of iron ions is 0.1 mol L -1 , the concentration of ammonium fluoride is 0.2 mol L -1 , the concentration of hexamethylenetetramine is 0.1 mol L -1 Immerse the cleaned galvanized iron substrate obtained above into the obtained mixed solution, and heat it in a reaction kettle at 80°C for 24 hours, and cool it down to room temperature naturally after the reaction; the obtained substrate is washed with absolute ethanol and water to remove impurities, and heated at 40°C Dry in an oven for 6 hours; then bake in a muffle furnace at 300°C for 6 hours to obtain a nano-array structured cata...

Embodiment 2

[0028] The galvanized iron substrate (96cm 2 ) with 1 mol·L -1 Ultrasonic cleaning with hydrochloric acid for 8 minutes, then ultrasonic cleaning with absolute ethanol for 10 minutes, and then cleaning with deionized water to obtain a substrate for later use; dissolving ferric nitrate, sodium fluoride and urea in deionized water to form a solution, wherein the concentration of iron ions is 0.3 mol·L -1 , the concentration of sodium fluoride is 0.5 mol L -1 , the concentration of urea is 0.5 mol L -1 Immerse the cleaned galvanized iron substrate obtained above into the obtained mixed solution, and heat it in a reaction kettle at 100°C for 18 hours, and cool it down to room temperature naturally after the reaction; the obtained substrate is washed with absolute ethanol and water to remove impurities, and heated at 50°C Dry in an oven for 5 hours; then bake in a muffle furnace at 400°C for 2 hours to obtain a nano-array structured catalyst. The mass of the active component of ...

Embodiment 3

[0030] The stainless steel substrate (72 cm 2 ) with 1.5 mol L -1 Ultrasonic cleaning with hydrochloric acid for 7 minutes, then ultrasonic cleaning with absolute ethanol for 10 minutes, and then cleaning with deionized water to obtain a matrix for later use; dissolve ferric chloride, sodium thiocyanide and hexamethylenetetramine in deionized water to make a solution , where the concentration of iron ions is 0.2 mol L -1 , the concentration of sodium thiocyanate is 0.6 mol L -1 , the concentration of hexamethylenetetramine is 0.8 mol L -1 ; Immerse the cleaned stainless steel substrate obtained above into the obtained mixed solution, and heat it in a reaction kettle at 120°C for 12 hours, and cool it to room temperature naturally after the reaction; the obtained substrate is washed with absolute ethanol and water respectively to remove impurities, Dry in an oven for 4 hours; then bake in a muffle furnace at 350°C for 3 hours to obtain a nano-array structured catalyst. The m...

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Abstract

The invention discloses a nano-array structured catalyst used for Fischer-Tropsch synthesis which comprises matrix and iron-oxide active components wherein iron-oxide active component: matrix = (2-20) mg: 1 cm <2>. The iron-oxide active component has a nano-array structure. The nano-array structured catalyst has an advantage of good temperature conductivity.

Description

technical field [0001] The invention belongs to a catalyst and its preparation method and application, in particular to a nano-array structured catalyst for Fischer-Tropsch synthesis, its preparation method and application. Background technique [0002] Fischer-Tropsch synthesis is the catalytic conversion of synthesis gas into hydrocarbons. In the process of Fischer-Tropsch synthesis, the reaction of forming alkanes and alkenes mainly occurs, accompanied by the formation of oxygenates and water gas shift reaction. The catalysts of Fischer-Tropsch synthesis catalysts are mainly Fe, Co, Ni, Ru-based catalysts. Fe-based catalysts are cheap, can obtain low-carbon olefins with high selectivity, prepare gasoline with high octane number, etc., and have high activity for water gas shift reaction. [0003] Fischer-Tropsch synthesis catalysts are generally supported granular catalysts. Shell company mainly uses SiO 2 As a carrier, it was put into operation in Malaysia in 1993, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J23/745B01J35/02C10G2/00
Inventor 陈建刚孙甲强张奎张娟张文彬李书平马彩莲孙桃梅
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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