Hollow-structure CuCeOx bimetallic oxide catalyst and preparation method thereof

A bimetallic oxide, hollow structure technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of poor uniformity of the control hollow structure and many influencing factors , poor controllability and other problems, to achieve the effect of superior catalytic activity, high controllability and low pollution

Inactive Publication Date: 2019-04-19
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the hard template, the uniformity of the control hollow structure is poor
In addition, both methods need to introduce templates, which increases the cost, and there are many influencing factors in the synthesis process, the controllability is poor, and it is difficult to scale up production
However, there is no report on the preparation of double metal oxide hollow micro-nano structure materials by this method.

Method used

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  • Hollow-structure CuCeOx bimetallic oxide catalyst and preparation method thereof
  • Hollow-structure CuCeOx bimetallic oxide catalyst and preparation method thereof
  • Hollow-structure CuCeOx bimetallic oxide catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 1.0g CuSO respectively 4 ·5H 2 O. Dissolve 4.0g of glucose in 30mL of deionized water, transfer to a 50mL hydrothermal kettle and heat to 160°C, keep for 36h, then cool to room temperature, wash and dry with deionized water several times, and then carbon-assisted CuO metal oxidation can be obtained. material precursor; then placed in a muffle furnace and baked at 550°C for 4h to obtain hollow CuO microspheres.

Embodiment 2

[0030] Take 0.8g Ce(NO 3 ) 3 ·6H 2 O. Dissolve 3.6g of glucose in 30mL of deionized water, transfer to a 50mL hydrothermal kettle and heat to 180°C, keep it for 24h, then cool to room temperature, wash with deionized water several times, and dry to obtain carbon-assisted CeO 2 Metal oxide precursor; then placed in a muffle furnace and baked at 550 ° C for 4 hours to obtain a hollow structure CeO 2 Microspheres.

Embodiment 3

[0032] Take 0.33g Ce(NO 3 ) 3 ·6H 2 O, 0.275g Cu(NO 3 ) 2 ·3H 2 O. Dissolve 4.0g of glucose in 30mL of deionized water, transfer to a 50mL hydrothermal kettle and heat to 180°C, keep for 24h and then cool to room temperature, wash and dry with deionized water several times to obtain carbon-assisted CuCeO x Double metal oxide precursor; then placed in a muffle furnace at 550 ° C for 4 hours to obtain a hollow structure Cu 6 Ce 4 o x Microspheres.

[0033] figure 1 The X-ray diffraction patterns of Examples 1-3 are given. It can be seen that the obvious CuO (JPCDS: 00-045-0937) and CeO 2 (JPCDS: 03-065-2975), hollow structure Cu 6 Ce 4 o x Microspheres also exhibit corresponding diffraction characteristic peaks. Further to the hollow structure Cu 6 Ce 4 o x Microspheres were characterized by transmission electron microscopy, and it can be seen that there are obvious micron-scale hollow structures ( figure 2 ).

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PUM

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Abstract

The invention discloses a hollow-structure CuCeOx bimetallic oxide catalyst and a preparation method thereof. The catalyst is prepared from a cerium salt and a copper salt through one-step hydrothermal and calcinations processes. The preparation method comprises the following steps: 1, weighing the cerium salt and the copper salt in proportion, adding the cerium salt and the copper salt into a glucose solution, and performing stirring to obtain a uniformly mixed solution for later use; 2, transferring the solution obtained in step 1 into a polytetrafluoroethylene stainless steel hydrothermal kettle, heating the kettle to a preset temperature, carrying out a constant temperature reaction, and cooling, washing and drying the obtained reaction product after the reaction is completed in orderto obtain a carbon-assisted CuCeOx precursor composite material; and 3, calcining the composite material sample obtained in step 2 in a muffle furnace to obtain the hollow-structure CuCeOx bimetallicoxide catalyst. The hollow-structure CuCeOx bimetallic oxide catalyst prepared by the method has the advantages of small particle size, and easiness in regulation and control of the proportion of eachcomponent. The method has the advantages of simplicity, easiness in enforcement, low pollution, low cost and certain universality.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, in particular to a hollow structure CuCeO x Double metal oxide catalyst and its preparation method. Background technique [0002] In recent years, hollow micro-nano materials have been widely used in the fields of catalysis, lithium battery materials, chemical sensing, and biomedicine due to their high specific surface area, space limitation, synergistic effect, and porous channels [Yu et al.Adv. Mater., 2017, 29(15), 1504563-1604601.]. For the preparation methods of hollow structure micro-nano materials, there are mainly (1) hard template method. First, a template with a certain size and shape (such as silicon dioxide, polystyrene, carbon, etc.) is synthesized, and then a layer is covered on the template. The target material is finally selectively chemically etched or high-temperature roasted to remove the core material to obtain a hollow structure micro-nano material. occur. Sin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/08F23G7/07
CPCB01J23/002B01J23/83B01J35/08F23G7/07F23G2209/14
Inventor 李雷张昌瑜严金龙
Owner YANCHENG INST OF TECH
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