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Natural nanomaterial attapulgite-supported cu-fe-based multi-component catalyst and its preparation method and application in the synthesis of low-carbon alcohols

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, large specific surface area, and improved low-carbon The effect of alcohol selectivity

Active Publication Date: 2016-08-24
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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  • Natural nanomaterial attapulgite-supported cu-fe-based multi-component catalyst and its preparation method and application in the synthesis of low-carbon alcohols
  • Natural nanomaterial attapulgite-supported cu-fe-based multi-component catalyst and its preparation method and application in the synthesis of low-carbon alcohols
  • Natural nanomaterial attapulgite-supported cu-fe-based multi-component catalyst and its preparation method and application in the synthesis of low-carbon alcohols

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 natural nano-material attapulgite-supported Cu-Fe-based multi-component catalyst, a preparation method thereof and an application in the synthesis of low-carbon alcohols. Its expression is Cu a Fe b m c / ATP; Wherein the auxiliary agent M is a combination of one or more elements in transition metal elements, alkali metals or rare earth elements; the Cu, Fe and M supported in the catalyst account for the total amount of the catalyst respectively a, b and c, and a=10-35%, b=10-25%, c=1-10%, and the rest is catalyst carrier ATP. The acid-modified attapulgite with a large specific surface area was prepared by modifying the natural attapulgite raw material with inorganic acid, and then used as a carrier, which was prepared by impregnation in a mixed aqueous solution of metal salts of Cu, Fe and other components. have to. The attapulgite-supported Cu-Fe-based multi-component catalyst of the present invention can be used in the process of synthesizing low-carbon alcohol from syngas. Attapulgite, a natural nanometer material with abundant resources and low price in my country, is used as a carrier, and has low cost, simple preparation method, stable performance, and easy industrial scale-up production.

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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Patent Type & Authority Patents(China)
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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