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Cu-Fe-Co base catalyst used for synthesizing low carbon alcohol by utilizing synthesis gas as well as preparation method and application thereof in low carbon alcohol synthesizing process by virtue of synthesis gas

A cu-fe-co and catalyst technology, applied in the chemical industry, can solve the problems of high production cost and low alcohol selectivity, and achieve the effects of low cost, improved selectivity and stable performance

Active Publication Date: 2011-11-23
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Generally speaking, the existing synthesis gas synthesis low-carbon alcohol catalytic system has C 2+ The problem of low selectivity and high production cost of alcohols, therefore, a new catalytic system for the synthesis of low-carbon alcohols has recently attracted much attention

Method used

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  • Cu-Fe-Co base catalyst used for synthesizing low carbon alcohol by utilizing synthesis gas as well as preparation method and application thereof in low carbon alcohol synthesizing process by virtue of synthesis gas
  • Cu-Fe-Co base catalyst used for synthesizing low carbon alcohol by utilizing synthesis gas as well as preparation method and application thereof in low carbon alcohol synthesizing process by virtue of synthesis gas
  • Cu-Fe-Co base catalyst used for synthesizing low carbon alcohol by utilizing synthesis gas as well as preparation method and application thereof in low carbon alcohol synthesizing process by virtue of synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] By expression Cu 25 Fe 15 co 5 K 2 / (SiO 2 ) 58 To prepare the catalyst, take 10.0g of 30-100 mesh microsphere silica gel, configure Cu, Fe, Co, K nitrate aqueous solution (impregnated with equal volume) according to the ratio of the above expression, impregnate at room temperature for 4 hours, then bake at 200°C Dry. Then the temperature was raised to 400°C at a rate of 1.0°C / min and fired for 8 hours, and then cooled to room temperature naturally.

[0026] The prepared catalyst was moved into the reactor, and H 2 Reduce at 400°C for 8 hours, then switch to syngas at a pressure of 1.5-10.0MPa, a temperature of 300°C, and a space velocity of 6000h -1 , H 2 / CO=2, the liquid phase product was collected in an ice-water bath, and the product composition was analyzed by gas chromatography. The obtained results are shown in Table 1:

[0027] Table 1

[0028]

[0029]

Embodiment 2

[0031] By expression Cu 20 Fe 20 co 5 Ce 2 / (SiO 2 ) 53 Prepare catalyst, get 10.0g 30~100 order microsphere silica gel, configure the oxalate of Cu, Fe, Co, Ce to contain ethanol 10% aqueous solution (with equal volume impregnation) according to above-mentioned expression ratio, all the other are with embodiment 1. Pressure 5.5MPa, temperature 210-450℃, space velocity 6000h -1 , H 2 / CO=2, the obtained results are shown in Table 2:

[0032] Table 2

[0033]

Embodiment 3

[0035] By expression Cu 25 Fe 25 co 3 mn 2 / (SiO 2 ) 45Prepare catalyst, get 10.0g 30~100 order microsphere silica gels, configure Cu, Fe, Co, Mn acetate containing 30% acetone aqueous solution (with equal volume impregnation) according to the ratio of the above expression, all the other are the same as in Example 1. Pressure 5.5MPa, temperature 350℃, space velocity 500~14000h -1 , H 2 / CO=2, the obtained results are as follows:

[0036] table 3

[0037]

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Abstract

The invention provides a Cu-Fe-Co base catalyst which has higher C2<+> alcohol selectivity and is used for synthesizing low carbon alcohol by utilizing synthesis gas and a preparation method thereof. The expression of the catalyst is CuaFebCocMd / SiO2, or CuaFebCocMd / Al2O3 or CuaFebCocMd / (SiO2+Al2O3), wherein M is one or a combination of more than one of transitional metal element, alkali metal, alkaline earth metal and rare-earth element, and a catalyst carrier is SiO2 or Al2O3 or a mixture of SiO2 and Al2O3; and loaded active components Cu, Fe, Co and M in the catalyst respectively account for a, b, c and d of the total weight of the catalyst (wt%), a is 10-35%, b is 10-35%, c is 1-10%, d is 0-5%, and the catalyst carrier accounts for 15-79%. The catalyst is prepared by adopting the steps of impregnation and substep reduction. The Cu-Fe-Co base catalyst provided by the invention can be applied to the low carbon alcohol process by virtue of the synthesis gas. The catalyst provided by the invention has low cost, a simple preparation method and stable performance, and the industrial amplification production is easy to realize; and compared with similar catalysts, the catalyst provided by the invention has mild reaction conditions and low reaction equipment requirements when being used for synthesizing the low carbon alcohol by utilizing the synthesis gas.

Description

【Technical field】 [0001] The invention relates to the technical field of chemical engineering, in particular to a Cu-Fe-Co-based catalyst for preparing low-carbon alcohols from synthesis gas, a preparation method thereof, and its application in the process of synthesizing low-carbon alcohols from synthesis gas. 【technical background】 [0002] Syngas to produce low-carbon alcohols (C 1 -C 5 Alcohol) is a breakthrough after the industrialization of syngas production of methanol. With the energy crisis and the emphasis on environmental protection requirements in various countries, people pay more attention to the synthesis of low-carbon alcohols from syngas. The application of low carbon alcohol mainly has the following aspects: [0003] First of all, it can be used as a high-quality power fuel. Although the calorific value of low-carbon alcohol is slightly lower than that of gasoline and diesel, due to the presence of oxygen in alcohol, its combustion is more sufficient tha...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J23/83B01J23/889B01J37/02C07C29/156C07C31/12C07C31/10C07C31/08C07C31/04
CPCY02P20/52
Inventor 陈新德熊莲丁飞陈盛华维温晓娜陈勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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