Promoting cobalt-copper base catalyst for preparation of low carbon mixed alcohol-carbon nano tube from synthetic gas and preparing method thereof

A low-carbon mixed alcohol, copper-based catalyst technology, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of catalyst activity and selectivity that need to be improved urgently

Inactive Publication Date: 2005-09-21
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Some of these low-carbon alcohol synthesis catalysts are close to practical use, but generally speaking, the activity and selectivity of the catalysts still need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: 15.00 grams of Co (NO 3 ) 2 ·6H 2 O and 4.16 g Cu(NO 3 ) 2 ·3H 2 O (purity are all AR grade) mixed together, add 80mL deionized water to make solution A, another 9.51g AR grade anhydrous K 2 CO 3 Dissolve in 80mL deionized water to make solution B, transfer the two liquids A and B into a preheated container at a constant temperature of 353K, flow side by side under stirring conditions, and drop into the reaction solution containing 0.523 grams of CNTs and constant temperature at 353K Co-precipitation reaction was carried out in the container, and the feeding was completed and continued to stir for 5 hours, stopped heating and continued to stir for 3 hours, then allowed it to stand and age for 12 hours, the feed liquid was through suction filtration, and the gained precipitate was fully washed with deionized water (washing To detect K in the eluent by flame ion absorption method + ion concentration below 0.1ppm), dried at 393K for 4 hours, and roaste...

Embodiment 2

[0023] Embodiment 2: 15.00 grams of Co (NO 3 ) 2 ·6H 2 O and 4.16 g Cu(NO 3 ) 2 ·3H 2 O (purity are all AR grade) mixed with 80mL deionized water to make solution A, another 9.51 grams of AR grade anhydrous K 2 CO 3 Dissolve in 80mL deionized water to make solution B, transfer the two liquids A and B into a preheated container at a constant temperature of 353K, flow side by side under stirring conditions, and drop into the reaction solution containing 0.262 grams of CNTs and constant temperature at 353K Co-precipitation reaction was carried out in the container, and the feeding was completed and continued to stir for 5 hours, stopped heating and continued to stir for 3 hours, then allowed it to stand and age for 12 hours, the feed liquid was through suction filtration, and the gained precipitate was fully washed with deionized water (washing To detect K in the eluent by flame ion absorption method + ion concentration below 0.1ppm), dried at 393K for 4 hours, and roasted...

Embodiment 3

[0025] Embodiment 3: 15.00 grams of Co (NO 3 ) 2 ·6H 2 O and 4.16 g Cu(NO 3 ) 2 ·3H 2 O (purity are all AR grade) mixed with 80mL deionized water to make solution A, another 9.51 grams of AR grade anhydrous K 2 CO 3 Dissolve in 80mL deionized water to make solution B, transfer the two liquids A and B into a preheated container at a constant temperature of 353K, flow side by side under stirring conditions, and drop into a reaction solution containing 0.419 grams of CNTs and constant temperature at 353K Co-precipitation reaction was carried out in the container, and the feeding was completed and continued to stir for 5 hours, stopped heating and continued to stir for 3 hours, then allowed it to stand and age for 12 hours, the feed liquid was through suction filtration, and the gained precipitate was fully washed with deionized water (washing To detect K in the eluent by flame ion absorption method + ion concentration below 0.1ppm), dried at 393 K for 4 hours, and roasted ...

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Abstract

The invention relates to a method for preparing a catalyst, which is used in making low-carbon mixed alcohol carbon nanometer tube promoting Co-Cu group. The catalyst comprises Co, Cu and carbon nanometer tube, wherein the mass percent is: Co:40-75wt%,Cu:15-50wt%,CNTs:5-25wt%, the CNTs is a multi-wall carbon nanometer tube. The catalyst is prepared through coprecipitation, which has high activity and stability, and the C2+ alcohol has high selective, besides, both the conversion rate of CO and space time productivity of the low-carbon mixed alcohol are higher than the present catalyst.

Description

technical field [0001] The invention relates to a carbon nanotube-promoted Co-Cu-based catalyst for preparing low-carbon mixed alcohols through catalytic conversion of synthesis gas. Background technique [0002] Coal-based "alcohol (including methanol, low-carbon alcohol)-ether" fuels are two types of fuel chemicals based on the diversification of energy and chemical raw materials and the clean utilization of coal with strategic significance. Low-carbon alcohols have been proven to be high-octane, low-pollution automotive fuel additives [Chianelli R R, Lyons J E, Mills G A. Catal. Today, 1994, 22, 361; Hall J R. Hydrocarbon Proc., 1992, 4,142C], which can be mixed with gasoline to make alcohol-oil hybrid fuel, and can also be used directly alone. The large-scale production of low-carbon alcohol technology through coal-based syngas is expected to greatly reduce its production cost, making it cheaper for cars to burn coal-based alcohol / ether fuel or alcohol-oil mixed fuel th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/70C07C29/156
Inventor 张鸿斌董鑫梁雪莲林国栋
Owner XIAMEN UNIV
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