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Three-dimensional ordered mesoporous cerium dioxide supported Pt-MnO<x> catalyst for efficient catalytic oxidation of toluene

A three-dimensional ordered, cerium oxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical/physical process, etc., to achieve cheap raw materials, high output, and simple preparation process Effect

Active Publication Date: 2020-01-03
BEIJING UNIV OF TECH
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  • Claims
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Problems solved by technology

To the best of our knowledge, no meso-CeO 2 load Pt-MnO x Catalyst Preparation and Its Catalytic Oxidation Performance of Toluene

Method used

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  • Three-dimensional ordered mesoporous cerium dioxide supported Pt-MnO&lt;x&gt; catalyst for efficient catalytic oxidation of toluene
  • Three-dimensional ordered mesoporous cerium dioxide supported Pt-MnO&lt;x&gt; catalyst for efficient catalytic oxidation of toluene
  • Three-dimensional ordered mesoporous cerium dioxide supported Pt-MnO&lt;x&gt; catalyst for efficient catalytic oxidation of toluene

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Embodiment 1

[0022] Example 1: Preparation of three-dimensional ordered mesoporous ceria (meso-CeO 2 ). The specific process is: at room temperature, 2g Ce(NO 3 ) 3 ·6H 2 O and 1g of KIT-6 template were dissolved in 20mL of ethanol, and magnetically stirred until a white solid A was obtained; the obtained solid A was roasted in a muffle furnace, and the roasting procedure was as follows: from room temperature to 600°C and kept at this temperature for 6h, then cooled to room temperature to obtain pale yellow solid B; washed the obtained solid B twice with hot sodium hydroxide solution (2mol / L), removed the KIT-6 template, and washed with deionized water Wash with ethanol several times, filter and dry to obtain meso-CeO 2 .

[0023] PtMn nanoparticles were prepared by ethylene glycol reduction method. Concrete steps are as follows: a certain amount of chloroplatinic acid (H 2 PtCl 6 ), manganese acetate (such as the theoretical molar ratio of Pt / Mn is 0, 2 and 7) and polyvinylpyrroli...

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Abstract

The invention discloses a three-dimensional ordered mesoporous cerium dioxide supported Pt-MnO<x> catalyst for efficient catalytic oxidation of toluene, and belongs to the fields of catalytic chemistry and nano-science. Firstly, a three-dimensional ordered mesoporous cerium oxide carrier is prepared by a KIT-6 template method, wherein Ce(NO3)3.6H2O is used as a precursor solution, and ethanol is used as a solvent; then Pt-Mn nanoparticles are prepared by an ethylene glycol reduction method, wherein chloroplatinic acid and manganese acetate are used as metal precursors, and an ethylene glycol solution containing sodium borohydride is used as a reducing agent; and finally, a meso-CeO2 supported Pt-Mn bimetal catalyst is obtained by using an adsorption method by mixing and stirring the meso-CeO2 carrier and the Pt-Mn nanoparticles, and the mPt-nMnO<x> / meso-CeO2 catalyst is obtained by roasting in air. The material is novel, the preparation process is simple, the morphology of product particles is regular and controllable, and the obtained catalyst shows good catalytic activity, thermal stability and water resistance for toluene oxidation.

Description

technical field [0001] The invention relates to a three-dimensional ordered mesoporous cerium oxide (meso-CeO) that efficiently catalyzes the oxidation of toluene 2 ) load Pt-MnO x Bimetallic catalysts, in which KIT-6 was used as template and sodium borohydride was used as reducing agent, and meso-CeO was prepared by KIT-6 template method and ethylene glycol reduction method, respectively 2 and mPt-nMnO x / meso-CeO 2 (m=0-0.39wt%, n=0-0.78wt%) catalyst, and finally achieve high-efficiency catalytic oxidation of toluene. It belongs to the field of catalytic chemistry and nanoscience. Background technique [0002] Volatile organic pollutants (VOCs) not only pollute the air environment, but also endanger human health. Toluene, in particular, is included in the list of three types of carcinogens by the International Agency for Research on Cancer of the World Health Organization. Among the VOCs elimination technologies, the catalytic oxidation method has become one of the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/656C01B32/50C01B5/00
CPCB01J23/6562C01B32/50C01B5/00
Inventor 戴洪兴付晓航邓积光刘雨溪敬林
Owner BEIJING UNIV OF TECH
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