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Attapulgite-based composite material loaded Cu-Zn-Fe based catalyst, preparation method and applications thereof

A technology of cu-zn-fe and attapulgite, which is applied in the field of comprehensive utilization of resources, can solve problems such as the complexity of low-carbon alcohol reaction systems, achieve less strict requirements on preparation process parameters, save acid consumption, improve activity and low carbon The effect of alcohol selectivity

Active Publication Date: 2015-08-05
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

CO 2 The reaction system of hydrogenation to prepare low-carbon alcohols is complex. In addition to the target product low-carbon alcohols, there are also a large number of by-products such as water, hydrocarbons, and other oxygen-containing compounds.

Method used

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  • Attapulgite-based composite material loaded Cu-Zn-Fe based catalyst, preparation method and applications thereof
  • Attapulgite-based composite material loaded Cu-Zn-Fe based catalyst, preparation method and applications thereof
  • Attapulgite-based composite material loaded Cu-Zn-Fe based catalyst, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Using 4wt% H 2 SO 4 Pressurized acid modification of attapulgite with solution: add 384g of water into a 500mL reactor and heat to 80°C, then add 80g of attapulgite ore and stir at constant temperature for 5min, and finally add 16g of 98wt% H 2 SO 4 , airtight reaction kettle (this embodiment forms certain vapor pressure by adding sulfuric acid solution by reacting in airtight reaction container, realizes the pressurized acid activation to attapulgite; What the embodiment of the present invention used is airtight 500mL reaction kettle , but other sealable reaction vessels can also be implemented; the pressure can also be controlled by feeding gas into the reaction vessel). Raise the temperature to 120°C, continue to stir and react at a constant temperature for 3 hours, discharge the material after the end, and filter the upper slurry after a period of static settling, wash the filter cake until neutral, dry it in an oven, and crush it through a 200-mesh standard s...

Embodiment 2

[0039] (1) Using 16wt% H 2 SO 4 Pressurized acid modification of attapulgite by solution: add 327.6g of water into a 500mL reactor and heat to 50°C, then add 130g of attapulgite ore and stir at constant temperature for 20min, and finally add 62.4g of 98wt% H 2 SO 4 , close the reaction kettle, heat up to 150°C, continue to stir and react at a constant temperature for 2 hours, discharge the material after the end, and filter the upper layer slurry after a period of static settling, wash the filter cake until neutral, dry it in an oven, and crush it to a standard of 200 mesh The acid-modified attapulgite powder was obtained by sieving, and placed in a desiccator for future use.

[0040] (2) Press Ce / Zr=1 / 19, Ce(NO 3 ) 3 ·6H 2O and ZrO(NO 3 ) 2 2H 2 O mixed and dissolved in water to obtain a cerium-zirconium precursor aqueous solution with a concentration of 0.5mol / L; weigh 20g of acid-modified attapulgite powder and disperse it in 100mL of water, and then press ATP / Ce x...

Embodiment 3

[0043] (1) Using 20wt% H 2 SO 4 Pressurized acid modification of attapulgite with solution: add 312g of water into a 500mL reactor and heat to 50°C, then add 65g of attapulgite ore and stir at constant temperature for 10min, and finally add 78g of 98wt% H 2 SO 4 , close the reaction kettle, heat up to 100°C, continue to stir and react at a constant temperature for 0.5h, discharge the material after the end, and filter the upper slurry after a period of static settling, wash the filter cake until neutral, dry it in an oven, and crush it through 200 mesh Acid-modified attapulgite powder was obtained by standard sieve and placed in a desiccator for later use.

[0044] (2) According to Ce / Zr=19 / 1, Ce (NH 4 ) 2 (NO 3 ) 6 with Zr(NO 3 ) 4 ·5H 2 O was mixed and dissolved in water to obtain an aqueous solution of cerium-zirconium precursor with a concentration of 3.0mol / L; 5g of acid-modified attapulgite powder was evenly dispersed in 100mL of water, and then ATP / Ce x Zr 1-...

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Abstract

The present invention provides an attapulgite / cerium-zirconium solid solution composite material loaded Cu-Zn-Fe-based catalyst, a preparation method and applications of the catalyst in preparation of C1-C5 low carbon alcohols through CO2 hydrogenation. According to the present invention, the catalyst adopts an attapulgite / cerium-zirconium solid solution composite material as a carrier, and the attapulgite / cerium-zirconium solid solution composite material preparation method comprises: carrying out pressurization acid activation to prepare acid-modified attapulgite, and then adopting a co-current flow co-precipitation method to obtain the attapulgite / cerium-zirconium solid solution composite material, wherein the total loading amount of the catalysis activity component is 25-80 wt%, and the catalyst carrier accounts for 20-75 wt%; and the catalyst uses the composite material formed from the natural nanometer material attapulgite doped cerium-zirconium solid solution having characteristics of rich resource and low price as the carrier, the cost is low, and the preparation method is simple, is easily subjected to industrial scale production, and is suitable for high-value conversion of bio-butanol fermentation exhaust gas and other low H / C ratio raw gases.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of resources, in particular to a Cu-Zn-Fe-based catalyst loaded on attapulgite / cerium-zirconium solid solution composite material, its preparation method and its CO 2 Hydrogenation to produce C 1 ~C 5 Application in low carbon alcohol. Background technique [0002] With the development of modern industry in the world, the emission of carbon dioxide is increasing day by day, and it has become the main exhaust gas that causes the greenhouse effect to aggravate global warming. According to the latest data from the International Climate and Environment Research Center and other institutions, the total global carbon dioxide emissions are expected to reach 40 billion tons in 2014, a record high in human history, while my country's per capita carbon emissions surpassed the European Union for the first time, accounting for nearly 30% of the global total. Acetone-butanol fermentation (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C29/156C07C31/02C07C31/04
CPCY02P20/52
Inventor 陈新德郭海军张海荣熊莲彭芬王璨杨丹施丝兰黄超林晓清
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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