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Sulfur-containing Fe-based catalyst as well as preparation method and application thereof

An iron-based catalyst, content technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low selectivity of low-carbon olefins and low conversion rate of CO and other problems, to achieve the effect of improving the selectivity of low-carbon olefins, increasing the conversion rate, and improving the activity of water vapor conversion

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low CO conversion rate and low selectivity of low-carbon olefins in the product in the technology of directly producing low-carbon olefins from synthesis gas in the prior art, and provides a new sulfur-containing iron-based catalyst and Its preparation method and application, the catalyst has the advantages of high conversion rate of CO and high selectivity of low-carbon olefins in the product when it is used in the reaction of fixed-bed syngas to directly produce low-carbon olefins

Method used

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  • Sulfur-containing Fe-based catalyst as well as preparation method and application thereof
  • Sulfur-containing Fe-based catalyst as well as preparation method and application thereof
  • Sulfur-containing Fe-based catalyst as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Weigh 100.0 grams of α-alumina (α-Al 2 o 3 ) powder in a ball mill for 1 hour to make a mill mix G for use; add deionized water to the above mill mix G for kneading and extrusion molding; after drying, roast at a temperature of 700°C After cooling for 3 hours, it was crushed and sieved into 40-60 meshes to prepare α-alumina carrier H; 78.5 grams of ferric nitrate nonahydrate, 25.2 grams of 50% manganese nitrate solution, 29.3 grams of anhydrous calcium nitrate, and 5.0 grams of nitric acid hexahydrate Gadolinium is dissolved in 20.0 grams of deionized water to make a mixed solution I; under the condition of a vacuum of 80kPa, the above mixed solution I is impregnated on 63.0 grams of prepared α-alumina H to obtain a catalyst precursor J; the impregnated The catalyst precursor J was dried at 110°C, and then calcined at a temperature of 600°C for 2 hours to obtain an iron-based catalyst K; the iron-based catalyst K was impregnated in ammonium bisulfate solution to obtain...

Embodiment 2

[0031] Weigh 100.0 grams of α-alumina (α-Al 2 o 3 ) powder in a ball mill for 1 hour to make a mill mix G for use; add deionized water to the above mill mix G for kneading and extrusion molding; bake at a temperature of 600°C after drying After cooling for 6 hours, crush and sieve into 40-60 meshes to prepare α-alumina carrier H; 52.3 grams of ferric nitrate nonahydrate, 12.6 grams of 50% manganese nitrate solution, 11.7 grams of anhydrous calcium nitrate, and 2.5 grams of nitric acid hexahydrate Gadolinium is dissolved in 20.0 grams of deionized water to make a mixed solution I; under the condition of a vacuum of 80kPa, the above mixed solution I is impregnated in 80.0 grams of prepared α-alumina H to obtain a catalyst precursor J; the impregnated The catalyst precursor J was dried at 110°C and then calcined at a temperature of 700°C for 1 h to obtain the iron-based catalyst K; the iron-based catalyst K was impregnated in ammonium bisulfate solution to obtain a sulfur-contai...

Embodiment 3

[0033] Weigh 100.0 grams of α-alumina (α-Al 2 o 3 ) powder in a ball mill for 1 hour to make a mill-mix G for use; add deionized water to the above-mentioned mill-mix G for kneading and extrusion; after drying, roast at a temperature of 900°C After cooling for 1 hour, crush and sieve into 40-60 meshes to prepare α-alumina carrier H; 52.3 grams of ferric nitrate nonahydrate, 12.6 grams of 50% manganese nitrate solution, 14.6 grams of anhydrous calcium nitrate, and 24.9 grams of nitric acid hexahydrate Gadolinium is dissolved in 20.0 grams of deionized water to make a mixed solution I; under the condition of a vacuum of 80kPa, the above mixed solution I is impregnated on 70.0 grams of prepared α-alumina H to obtain a catalyst precursor J; the impregnated The catalyst precursor J was dried at 110°C and then calcined at a temperature of 450°C for 6 hours to obtain an iron-based catalyst K; the iron-based catalyst K was impregnated in ammonium bisulfate solution to obtain a sulfur...

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Abstract

The invention relates to a sulfur-containing Fe-based catalyst as well as a preparation method and application thereof, and mainly solves the problems of low CO conversion rate and low light olefins selectivity in the reaction of directly preparing carbine from synthesized gas in the prior art. The sulfur-containing Fe-based catalyst comprises the following components: (a) 10 to 40 percent of a Fe element or an oxide thereof; (b) 5 to 30 percent of a manganese element or an oxide thereof; (c) 5 to 25 percent of at least one element of calcium and magnesium or an oxide thereof; (d) 1 to 10 percent of a gadolinium element or an oxide thereof; (e) 30 to 80 percent of a carrier alpha-aluminum oxide; (f) the technical solution for preparing the sulfur-containing Fe-based catalyst by adding sulfur which is 30 to 150 ppm of the total weight of the Fe-based catalyst through a soaking method solves the problem better; the sulfur-containing Fe-based catalyst can be used for industrial production for directly preparing light olefins from fixed bed synthesis gas.

Description

technical field [0001] The invention relates to a sulfur-containing iron-based catalyst and its preparation method and application. Background technique [0002] Low-carbon olefins refer to olefins with carbon atoms less than or equal to 4. Low-carbon olefins represented by ethylene and propylene are very important basic organic chemical raw materials. With the rapid growth of my country's economy, the supply of low-carbon olefins has been in short supply for a long time. At present, the production of low-carbon olefins mainly adopts the petrochemical route of cracking light hydrocarbons (ethane, naphtha, light diesel oil). Due to the increasing shortage of global oil resources and the long-term high price of crude oil, the development of low-carbon olefins industry only relies on oil The tubular cracking furnace process with light hydrocarbons as raw materials will encounter more and more raw material problems, and the production process and raw materials of low-carbon ole...

Claims

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Application Information

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IPC IPC(8): B01J23/889C07C1/04C07C11/02
Inventor 李剑锋陶跃武庞颖聪宋卫林
Owner CHINA PETROLEUM & CHEM CORP
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