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Cu-Fe-based multi-component catalyst loaded with natural nanometer material attapulgite, preparation method of multi-component catalyst and application of multi-component catalyst in lower alcohol synthesis

A technology of attapulgite and nanomaterials, which is applied in the preparation of hydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds. It can solve problems that have not been reported yet, and achieve easy industrial scale-up production, improved activity, and large specific surface area. Effect

Active Publication Date: 2014-10-08
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research of attapulgite on the preparation of low-carbon alcohols from syngas has not been reported at home and abroad

Method used

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  • Cu-Fe-based multi-component catalyst loaded with natural nanometer material attapulgite, preparation method of multi-component catalyst and application of multi-component catalyst in lower alcohol synthesis
  • Cu-Fe-based multi-component catalyst loaded with natural nanometer material attapulgite, preparation method of multi-component catalyst and application of multi-component catalyst in lower alcohol synthesis
  • Cu-Fe-based multi-component catalyst loaded with natural nanometer material attapulgite, preparation method of multi-component catalyst and application of multi-component catalyst in lower alcohol synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add 500mL water into a three-necked flask and heat it in a water bath to 80°C, then add 100g of dry natural attapulgite powder, stir at a constant temperature for 120min, then let it stand, discard the upper layer of clear water and bottom sand particles, and filter the middle layer of slurry and dry it , to obtain rinsed attapulgite.

[0026] (2) adopt 150mL, 3wt% sulfuric acid (H 2 SO 4 ) solution to acid-modify the rinsed attapulgite powder: add 80mL of water into a three-necked flask and heat it to 60°C in a water bath, then add 30g of rinsed attapulgite powder (>100 mesh) and stir at a constant temperature, and finally add 67.5mL of water h 2 SO 4 Solution (configuration 150mL, total concentration is 3wt%H 2 SO 4 solution, adding 98wt% H 2 SO 4 The volume is 2.5mL, so the water volume at this time is 150-80-2.5=67.5mL), continue to stir and react at a constant temperature for 3.5h, after the end, perform suction filtration, wash until neutral, and dry to...

Embodiment 2

[0033] (1) Add 800mL water into a three-necked flask and heat it in a water bath to 50°C, then add 80g of dry natural attapulgite powder, stir at a constant temperature for 80 minutes, let it stand, discard the upper layer of clear water and bottom sand particles, and filter the middle layer of slurry and dry it. , to obtain rinsed attapulgite.

[0034] (2) Using 320mL, 21wt% nitric acid (HNO 3 ) solution to acid-modify the rinsed attapulgite powder: add 120mL of water into a three-necked flask and heat it to 75°C in a water bath, then add 40g of rinsed attapulgite powder (>100 mesh) and stir evenly at a constant temperature, and finally add 133.9mL of water-prepared HNO 3 Solution (configuration 320mL, total concentration is 21wt% HNO 3 solution, adding 68wt% HNO 3 The volume is 66.1mL, so the water volume at this time is 320-120-66.1=133.9mL), continue to stir and react at a constant temperature for 5h, after the end, perform suction filtration, wash until neutral, and dr...

Embodiment 3

[0041] (1) Add 720mL of water into a three-necked flask and heat it to 70°C in a water bath, then add 90g of dry natural attapulgite powder, stir at a constant temperature for 60 minutes, let it stand, discard the upper layer of clear water and bottom sand particles, and filter the middle layer of slurry and dry it. , to obtain rinsed attapulgite.

[0042] (2) adopt 350mL, 15wt% phosphoric acid (H 3 PO 4 ) solution to acid-modify the rinsed attapulgite powder: add 150mL of water into a three-necked flask and heat it to 90°C in a water bath, then add 70g of rinsed attapulgite powder (>100 mesh) and stir evenly at a constant temperature, and finally add 161.7mL of water-prepared h 3 PO 4 Solution (configuration total concentration is 15wt%H 3 PO 4 solution, add 85wt% H 3 PO 4 The volume is 38.3mL, so the volume of water at this time is 350-150-38.3=161.7mL), continue to stir and react at a constant temperature for 2 hours, after the end, perform suction filtration, wash u...

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Abstract

The invention provides a Cu-Fe-based multi-component catalyst loaded with natural nanometer material attapulgite, a preparation method of the multi-component catalyst and an application of the multi-component catalyst in low alcohol synthesis. The multi-component catalyst is characterized in that the expression formula is CuaFebMc / ATP, wherein an auxiliary agent M represents one or the combination of multiple elements, namely a transition metal element, alkali metal or a rare earth element; the total amounts of Cu, Fe and M loaded in the catalyst are respectively a, b and c, a is equal to 10-35%, b is equal to 10-25%, c is equal to 1-10%, and the rest is a catalyst carrier ATP. The preparation method comprises the steps of preparing acid-modified attapulgite with a larger specific surface area from an inorganic acid modified natural attapulgite raw material, carrying out loading in a metal salt mixed water solution including Cu, Fe and other components by taking the acid-modified attapulgite as a carrier by virtue of an impregnation method, so as to prepare the Cu-Fe-based multi-component catalyst. The Cu-Fe-based multi-component catalyst can be applied to a process for synthesizing low alcohol by virtue of synthesis gas. By taking the natural nanometer material attapulgite which is rich in resources and low in cost in China as the carrier, the cost is low, the preparation method is simple, the performance is stable, and the industrial large-scale production is easily realized.

Description

【Technical field】 [0001] The invention relates to the technical field of energy and chemical engineering, in particular to a natural nano-material attapulgite-supported Cu-Fe-based multi-component catalyst, its preparation method and its application in the synthesis of low-carbon alcohols. 【Background technique】 [0002] With the development of the world economy, the demand for energy is increasing day by day. The pollution of the environment and the limitation of resources by traditional fossil energy have been widely recognized by people. The development and utilization of clean, low-pollution, renewable green new energy has become one of the major research topics in the world today. Low-carbon mixed alcohol (referred to as low-carbon alcohol) refers to the 1 ~C 5 A liquid mixture of alcohols. Low carbon alcohol contains a certain amount of C 2+ Alcohol has good stability to water and relatively good solvation effect, and can significantly increase the octane number o...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/78B01J23/83C07C29/156C07C31/02
Inventor 陈新德郭海军张海荣彭芬熊莲杨会娟王璨黄超林晓清
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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