Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fe-Co bimetal multiphase Fenton-like catalyst taking modified sepiolite as carrier and preparation method thereof

A sepiolite and catalyst technology, applied in the field of catalyst preparation, can solve the problems of iron ion secondary pollution, narrow pH value range, low hydrogen peroxide utilization rate, etc., achieve long-lasting and efficient removal, low price and high utilization rate Effect

Inactive Publication Date: 2012-10-24
HARBIN INST OF TECH
View PDF4 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a Fe-Co bimetal with modified sepiolite as a carrier in order to solve the problems of narrow range of homogeneous Fenton's effective pH value, low utilization rate of hydrogen peroxide, and easy to cause secondary pollution of iron ions. Preparation method of heterogeneous Fenton-like catalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fe-Co bimetal multiphase Fenton-like catalyst taking modified sepiolite as carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Specific embodiment 1: In this embodiment, the preparation method of Fe-Co bimetallic heterogeneous Fenton-like catalyst with modified sepiolite as the carrier is realized according to the following steps:

[0015] 1. Add 100-150 mesh sepiolite powder into sulfuric acid with a concentration of 0.5mol / L according to the ratio of solid-liquid ratio of 1:10 for acidification, stir at a speed of 120-130r / min for 3-4 hours, and use Wash with ionic water until neutral, filter, and then activate at 105°C for 2-3 hours to obtain modified sepiolite;

[0016] 2. Put 2.02~8.08g of Fe(NO 3 ) 3 9H 2 O and 0.87-4.36g of Co(NO 3 ) 3 ·6H 2 O was added to 100mL deionized water to obtain a mixed solution of ferric nitrate and cobalt nitrate, and then 1.5-6g of urea was added to obtain a mixed solution;

[0017] 3. Pour the mixed solution into a 250mL glass Erlenmeyer flask with a silica gel stopper containing 4g of modified sepiolite, then place it in a water bath and heat it to 10...

Embodiment

[0019] The preparation method of the Fe-Co bimetallic heterogeneous Fenton-like catalyst with modified sepiolite as a carrier is realized in the following steps:

[0020] 1. Add 150-mesh sepiolite powder into sulfuric acid with a concentration of 0.5mol / L for acidification according to the ratio of solid-liquid ratio of 1:10, stir at a speed of 130r / min for 3 hours, and wash with deionized water until neutral , filtered, and then activated at 105°C for 3 hours to obtain modified sepiolite;

[0021] Two, 6.06g of Fe(NO 3 ) 3 9H 2 O and 1.45g of Co(NO 3 ) 3 ·6H 2 O was added to 100mL deionized water to obtain a mixed solution of ferric nitrate and cobalt nitrate, and then 3g of urea was added to obtain a mixed solution;

[0022] 3. Pour the mixed solution into a 250mL glass Erlenmeyer flask with a silica gel stopper containing 4g of modified sepiolite, then place it in a water bath and heat it to 100°C, stir for 2 hours, and cool and age for 2 hours to obtain a precipitate...

specific Embodiment approach 2

[0024] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, 120 mesh sepiolite powder is added into sulfuric acid with a concentration of 0.5 mol / L according to the ratio of solid to liquid ratio of 1:10 for acidification . Other steps and parameters are the same as those in Embodiment 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a Fe-Co bimetal multiphase Fenton-like catalyst taking modified sepiolite as a carrier, which relates to a preparation method of a catalyst, to solve the problems of narrow effective pH value range, low utilization ratio of hydrogen peroxide and easiness in generation of secondary pollution of iron ions of homogeneous Fenton. The preparation method comprises the following steps: (1) acidizing and activating sepiolite powder to obtain modified sepiolite; (2) preparing a mixed solution of ferric nitrate and cobalt nitrate, and adding urea to obtain a mixed solution; (3) heating the mixed solution and the modified sepiolite in a water bath for reacting, cooling and ageing to obtain a precipitate; and washing with water and drying to obtain a precursor of the catalyst, and calcining to obtain the Fe-Co bimetal multiphase Fenton-like catalyst. When the catalyst prepared in the invention is used, the pH value of water does not need to be regulated, so the range of the pH value is expanded, and the utilization ratio of the hydrogen peroxide is high; and meanwhile, iron ions can be slowly released to realize the synergistic effect of the iron ions and cobalt ions and speed up the reaction, so that organic pollutants which are difficult to biodegrade can be permanently and efficiently removed, and secondary pollution is difficult to cause.

Description

technical field [0001] The invention relates to a method for preparing a catalyst. Background technique [0002] Fe 2+ to H 2 o 2 The OH produced by catalytic decomposition has a strong oxidation ability, which can mineralize organic matter into CO 2 、H 2 O and inorganic molecules are an environmentally friendly green water treatment technology. Compared with other oxidation techniques, the Fenton method has the advantages of high efficiency, simple operation, mild reaction conditions and no need for special reaction devices. It is suitable for the treatment of different water qualities, especially for the treatment of refractory biodegradable organic wastewater. Therefore, the Fenton method is widely used in the treatment of printing and dyeing wastewater, coking wastewater, pharmaceutical wastewater, oily wastewater, phenol-containing wastewater, and nitrobenzene-containing wastewater. However, in actual engineering and research, it is found that the homogeneous Fen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/75C02F1/28C02F1/72
Inventor 李伟光宿程远刘兴哲
Owner HARBIN INST OF TECH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com