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Mesoporous photo-thermal catalyst for dry reforming of medium-high temperature methane as well as preparation method and application thereof

A technology for methane dry reforming and catalyst, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. High chemical conversion efficiency, high catalytic conversion activity, and improved activity

Inactive Publication Date: 2020-05-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a mesoporous photothermal catalyst for medium-high temperature methane dry reforming and its preparation method and application, so as to solve the problem that existing methane dry reforming catalysts are difficult to perform photothermal synergy Catalytic issues with Ni-based-mesoporous TiO with controllable pore size 2 The preparation method of photothermal synergistic catalyst, and the preparation method process is simple and reliable

Method used

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  • Mesoporous photo-thermal catalyst for dry reforming of medium-high temperature methane as well as preparation method and application thereof
  • Mesoporous photo-thermal catalyst for dry reforming of medium-high temperature methane as well as preparation method and application thereof
  • Mesoporous photo-thermal catalyst for dry reforming of medium-high temperature methane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] At room temperature, dissolve 0.75g of cetyltrimethylammonium bromide in 32ml of isopropanol solution, stir until completely dissolved, add 5g of tetra-n-butyl titanate, 1ml of glacial acetic acid, and stir for 0.5h A uniform light yellow solution A is formed; add 1.5ml of deionized water to 2ml of isopropanol to form a dropwise solution B; slowly drop B into solution A, stir and react at 30°C in a closed state for a certain period of time to obtain a uniform milky white TiO 2 Gel; aged for more than 48h, the obtained mesoporous TiO 2 The precursor gel was placed in a petri dish and dried at 100 °C, as image 3 As shown, the xerogel was calcined at 400 °C for 3 h to obtain white mesoporous TiO 2 Powder, its SEM picture is as follows figure 1 -b shown.

[0044] Then TiO 2 Immersed in a nickel nitrate solution with a concentration of 0.2wt%, dried the impregnated catalyst at 100°C for 2h, and calcined at 500°C for 5h to obtain Ni-mesoporous TiO with a pore size of 5....

Embodiment 2

[0046] Such as image 3 Shown, with embodiment 1, difference is to control mesoporous TiO 2 The calcination temperature of the precursor gel was 350°C to obtain 4.6nm pore size Ni-mesoporous TiO 2 Photothermal catalyst, its SEM picture is as follows figure 1 -a shown.

Embodiment 3

[0048] Such as image 3 Shown, with embodiment 1, difference is to control mesoporous TiO 2 The calcination temperature of the precursor gel was 450°C to obtain 8.4nm pore size Ni-mesoporous TiO 2 Photothermal catalyst, its SEM picture is as follows figure 1 -d shown.

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Abstract

The invention discloses a mesoporous photo-thermal catalyst for medium-high temperature methane dry reforming as well as a preparation method and application thereof. The preparation method belongs tothe field of solar photo-thermal conversion and photo-thermal catalyst preparation methods, and adopts an impregnation method to load a thermal catalyst Ni to the surface of a mesoporous TiO2 photocatalyst, so as to form the Ni-mesoporous TiO2 photo-thermal catalyst with nano Ni particles loaded on the surface of mesoporous TiO2. The medium-high temperature methane dry reforming photo-thermal synergistic catalyst provided by the invention is simple to prepare and easy to operate, has good photo-thermal synergistic catalytic activity at 400-600 DEG C, and has obviously improved activity compared with the traditional Ni-based thermal catalyst, so that the catalyst has higher industrial application level and prospect.

Description

technical field [0001] The invention belongs to the field of photothermal conversion of solar energy and preparation methods of photothermal catalysts, and relates to a mesoporous photothermal catalyst for dry reforming of medium-high temperature methane and its preparation method and application. Background technique [0002] The dwindling of fossil energy and increasingly severe environmental problems force people to seek various clean and renewable energy technologies. Among the many renewable energy sources, solar energy has unique advantages, that is, the total amount of resources is large, widely distributed, and there is no problem of resource depletion. Therefore, how to efficiently use solar energy for energy conversion has become the research focus of many scholars. [0003] Solar energy conversion technology includes not only the photovoltaic conversion technology of direct light-to-electricity energy by using the photoelectric effect of semiconductor materials s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/00B01J35/10B01J37/08B01J37/02C01B3/40
CPCB01J23/755B01J37/0201B01J37/0018C01B3/40C01B2203/0227B01J35/394B01J35/393B01J35/647B01J35/39Y02P20/52
Inventor 谢涛徐凯迪郑浩野杨伯伦
Owner XI AN JIAOTONG UNIV
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