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Preparation method of nano-FePd catalyst, products by preparation method and application of preparation method

A catalyst and nanotechnology, applied in the field of catalyst material research, to achieve the effects of improving activity, facilitating precipitation and separation, and high catalytic activity

Inactive Publication Date: 2015-03-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also some reports on encapsulating metal nanoparticles in the pores of SBA-15, but they are basically used for adsorption and drug release (Magnetic SBA-15 / poly(N-isopropylacrylamide) composite: Preparation, characterization and temperature-responsive drug release property, Y.F.Zhu,S.Kaskel,T.Ikoma,N.Hanagata,Microporous and Mesoporous Materials,123(2009)107-112.Microstructure and Magnetic Properties of Highly Ordered SBA-15Nanocomposites Modified with and Nanoparticles,P.F.Wang,H.X.Jin,M .Chen, D.F.Jin, B.Hong, H.L.Ge, J.Gong, X.L.Peng, H.Yang, Z.Y.Liu, X.Q.Wang, Journal of Nanomaterials, 2012(2012) 1-7.), and used to prepare highly dispersed , Nanoparticles with small particle size have not been reported

Method used

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  • Preparation method of nano-FePd catalyst, products by preparation method and application of preparation method
  • Preparation method of nano-FePd catalyst, products by preparation method and application of preparation method
  • Preparation method of nano-FePd catalyst, products by preparation method and application of preparation method

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Experimental program
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Effect test

Embodiment 1

[0040] Take 1g of mesoporous SBA-15 (SiO 2 / Al 2 o 3 ≥500, BET:400-600m 2 / g, pore size 6-8nm) sample, equal volume impregnated in the concentration of 0.1885mol / L Fe(NO 3 ) 3 In the aqueous solution, dry it at room temperature, dry it in an oven at 105°C to remove residual moisture, and place it in a tube furnace for roasting at 400°C for 4 hours. The calcined sample was immersed in 0.0100mol / L PdCl 2 In the aqueous solution, dry at 105°C and bake at 400°C for 4 hours. The obtained sample was placed in a tube furnace, H 2 The FePd-SBA catalyst with loading of 5% Fe and 5% Pd was prepared by reduction at 200°C for 2 hours under atmospheric conditions.

Embodiment 2

[0042] Take 1g of mesoporous SBA-15 (SiO 2 / Al 2 o 3 ≥500, BET:400-600m 2 / g, pore size 6-8nm) sample, equal volume impregnated in PdCl concentration of 0.0100mol / L 2 In the aqueous solution, dry it at room temperature, dry it in an oven at 105°C to remove residual moisture, and place it in a tube furnace for roasting at 400°C for 4 hours. The calcined samples were impregnated in 0.1885mol / L Fe(NO 3 ) 3 In the aqueous solution, dry at 105°C and bake at 400°C for 4 hours. The obtained sample was placed in a tube furnace, H 2 The PdFe-SBA catalyst with loading capacity of 5% Pd and 5% Fe was prepared by reduction at 200°C for 2 hours under atmospheric conditions.

Embodiment 3

[0044] Take 1g of mesoporous SBA-15 (SiO 2 / Al 2 o 3 ≥500, BET:400-600m 2 / g, pore size 6-8nm) sample, equal volume impregnated in the concentration of 0.1885mol / L Fe(NO 3 ) 3 and 0.0100mol / L PdCl 2 In the mixed aqueous solution, dry it at room temperature, dry it in an oven at 105°C to remove residual moisture, and place it in a tube furnace for roasting at 400°C for 4 hours. The obtained sample was placed in a tube furnace, H 2 Reduction at 200° C. for 2 hours under atmospheric conditions prepared a (Fe+Pd)-SBA catalyst with loadings of 5% Fe and 5% Pd.

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Abstract

The invention discloses a preparation method of a nano-Fe Pd catalyst. The method comprises the steps of mixing an Fe<3+> water solution and a Pd <2+> water solution with a mesoporous material for dipping; then drying, roasting and finally reducing in the atmosphere of H2 to obtain the FePd catalyst. The invention also discloses the nano-FePd catalyst and the application of the nano-Fe Pd catalyst. According to the preparation method, the mesoporous material is used for carrying out space limitation on the growth of nano particles, so that the nano particles which are fine in particle size and uniform in distribution can be obtained, and the catalyst has higher activity; the activity of the catalyst is further improved by the co-loading of Fe and Pd; furthermore, the application method is simple, the types and the proportions of active components can be adjusted, the components have the characteristic of multi-component and multi-valence coexistence, and the activity of the catalyst can be improved by the synergistic effect of the components. The preparation method of the nano particles is simple; an oxidizing agent is environment-friendly; the nano-FePd catalyst can directly react at room temperature and has the characteristic of multiple functions and application, thus having application prospect of industrialization.

Description

technical field [0001] The invention belongs to the technical field of catalyst material research, and in particular relates to a method for preparing a highly dispersed and highly active nanometer FePd catalyst and using it for Fenton-like degradation. Background technique [0002] With the rapid development of the world economy and the continuous growth of the world population, hundreds of millions of tons of industrial, agricultural and domestic wastewater need to be treated before they can be discharged, causing enormous pressure on the environment and environmental protection. Taking China as an example, in 2012, the total discharge of wastewater in the country was 68.48 billion tons, of which the discharge of industrial wastewater was 22.16 billion tons, including 3.385 million tons of COD, 1481 tons of volatile phenols and 17327 tons of petroleum. The organic pollutants in these wastewaters, especially high-concentration and refractory organics, have caused serious po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C02F1/72B82Y30/00B82Y40/00C02F101/34C02F101/38
Inventor 文岳中李兴发马建青刘维屏
Owner ZHEJIANG UNIV
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