A kind of sulfur loaded spinel type oxide fenton catalyst and preparation method thereof
A spinel-type catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of narrow pH range and large iron-containing sludge , Catalyst deactivation and other problems, achieve effective magnetic separation recovery, good catalytic activity, and improve catalytic efficiency
Active Publication Date: 2016-06-08
SANMING UNIV
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Problems solved by technology
However, the traditional Fenton technology has disadvantages such as a large amount of iron-containing sludge produced after water treatment, a narrow pH range (pH=2-3), and catalyst deactivation due to the influence of anions in water.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0015] (1) Weigh Co(NO 3 ) 2 ·6H 2 O and Fe(NO 3 ) 3 ·6H 2 O and made into a solution, magnetically stirred until completely dissolved, and allowed to stand.
[0016] (2) Heat in a water bath at 90°C, keep the temperature constant for 1 hour, add ethylene glycol, use a slightly excessive amount of sodium hydroxide precipitant to evenly precipitate, and continue heating for 2 hours. Use suction filtration to filter and wash the precipitate several times to obtain a catalyst Precursor. Dry the precursor at 105° C. for 12 h under vacuum to obtain a solid powder.
[0017] (3) Transfer the powder into a high-pressure reactor lined with tetrafluoroethylene, and treat it at a temperature of 180°C for more than 12 hours. After programmed cooling, filter, wash several times, and dry at 105°C for 12h under vacuum. The resulting sample was immersed in 1MH 2 SO 4 In the solution for 1h, filter and wash 3 times at room temperature, dry at 105°C, and roast at 500°C for 2h to obtai...
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Abstract
The invention provides a sulfur-loaded spinel-type oxide Fenton catalyst and a preparation method thereof. The sulfur-loaded spinel-type oxide is MFe2O4, and M=Zn, Co, Ni. The sulfur-loaded spinel-type oxide MFe2O4 catalyst was applied to the Fenton reaction to replace the traditional iron salt catalyst to form a new heterogeneous reaction system, which not only effectively reduced the cost, increased the catalytic efficiency, and broadened the pH range, but also Recycling can be done using simple magnetic techniques. And according to its unique light absorption characteristics, the Photo-Fenton combination technology can be used to reduce the amount of hydrogen peroxide added and improve the catalytic efficiency. The invention uses common chemical products as raw materials and prepares the heterogeneous Fenton catalyst through a chemical synthesis method, which is a catalyst material with multiple functions. All raw materials are cheap and easy to obtain, the process route is relatively simple, there is no environmental pollution, the process is simplified, and industrial transformation can be realized.
Description
technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a sulfur-loaded spinel-type oxide Fenton catalyst and a preparation method thereof. Background technique [0002] With the development of industrialization, human damage to the environment is gradually deepening, and my country is also one of the countries with severe water shortage and pollution. With the rise of the environmental protection movement in the world, the research and production of water treatment agents have become increasingly important. It has become a top priority to develop water treatment agents with world advanced level. Therefore, the innovation of wastewater treatment technology has been paid more and more attention. [0003] Nowadays, a large amount of dye sewage discharged from the textile industry has caused serious pollution of water resources and a series of environmental problems. Most of the dyes in textiles are systems containing az...
Claims
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IPC IPC(8): B01J23/75C02F1/72
Inventor 牛玉李福颖王仁章董国文廖宁康陈伟琼翁凤妹
Owner SANMING UNIV