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Methane synthesis catalyst layered carrier and preparing method thereof

A catalyst layer, methane synthesis technology, applied in the field of catalysis, to achieve the effects of good hydrothermal stability, large specific surface area and high reaction activity

Active Publication Date: 2016-07-20
XINDI ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the chemical hydrothermal method to synthesize high-purity materials with a layered structure and applying them to the preparation of methane synthesis catalysts will have good application prospects, but there have been no relevant reports so far

Method used

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  • Methane synthesis catalyst layered carrier and preparing method thereof
  • Methane synthesis catalyst layered carrier and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 200mL of deionized water, add 54.43g of aluminum acetate and 32.04g of magnesium acetate, stir until completely dissolved to make salt solution A. 151.57g sodium silicate nonahydrate was made into solution B of 20% mass concentration. Solutions A and B were mixed, and a buffer solution of sodium bicarbonate and sodium hydroxide was added with stirring until the pH value was 13.0 to obtain cloudy solution C. Finally, put the cloudy solution C into a high-pressure reactor, stir and crystallize at 300°C for 8 hours, filter and wash until the pH value of the washing liquid is less than 8.0, dry at 120°C for 2 hours, press into tablets, and bake at 450°C for 3 hours. Hours, the layered carrier of the methane synthesis catalyst was obtained, and the scanning electron microscope photos were as follows:figure 1 As shown, it appears as a layered structure. The obtained carrier was impregnated in the mixed solution of nickel nitrate and lanthanum nitrate to obtain 15% Ni co...

Embodiment 2

[0040] Take 280mL of deionized water, add 50.02g of aluminum nitrate and 66.60g of magnesium nitrate, stir until completely dissolved to make salt solution A. 189.47g sodium silicate nonahydrate was made into solution B of 20% mass concentration. Mix solutions A and B, and add a buffer solution of sodium bicarbonate and sodium hydroxide with stirring until the pH value is 11.0 to obtain cloudy solution C. Finally, put the cloudy liquid C into a high-pressure reactor, stir and crystallize at 140°C for 3 hours, filter and wash until the pH of the washing liquid is less than 8.0, dry at 120°C for 2 hours, press into tablets, and bake at 450°C for 3 hours. Hours, the layered carrier of the methane synthesis catalyst was obtained. The obtained carrier was impregnated in the mixed solution of nickel nitrate and lanthanum nitrate to obtain 15% Ni content, La 2 o 3 Layered methane synthesis catalyst R2 with a content of 5%.

Embodiment 3

[0042] Take 260mL of deionized water, add 20.41g of aluminum acetate and 85.43g of magnesium acetate, stir until completely dissolved to make salt solution A. 198.94g sodium silicate nonahydrate was made into solution B of 20% mass concentration. Mix solutions A and B, and add a buffer solution of sodium bicarbonate and sodium hydroxide with stirring until the pH value is 9.0 to obtain cloudy solution C. Finally, put the cloudy liquid C into a high-pressure reactor, stir and crystallize at 210°C for 12 hours, filter and wash until the pH value of the washing liquid is less than 8.0, dry at 120°C for 2 hours, press into tablets, and bake at 450°C for 3 hours. Hours, the layered carrier of the methane synthesis catalyst was obtained. The obtained carrier was impregnated in the mixed solution of nickel nitrate and lanthanum nitrate to obtain 15% Ni content, La 2 o 3 Layered methane synthesis catalyst R3 with a content of 5%.

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Abstract

The invention relates to a methane synthesis catalyst layered carrier and a preparing method thereof and belongs to the technical field of methane synthesis catalysts.The methane synthesis catalyst carrier is mainly composed of Si, Al, O and Mg and is of a layered structure, and specific surface area can reach 260-400 m2 / g.The layered carrier is large in specific surface area, stable in structure and high in hydration resistance.The invention further relates to the preparing method of the methane synthesis catalyst layered carrier.Raw materials are cheap and easy to obtain, the preparing process is simple, condition controllability and repeatability are high, and industrial production can be achieved quite easily.A methane synthesis catalyst prepared with the layered carrier is high in activity and high in high temperature resistance and hydration resistance, and can stay stable for a long time under high temperature, high oxycarbide content and high moisture partial pressure.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a methane synthesis catalyst carrier and a preparation method. In particular, it relates to a layered structure carrier and a preparation method thereof. The carrier is used to prepare a catalyst by an impregnation method, and is particularly suitable as a carrier of a methane synthesis catalyst. Background technique [0002] As a clean and efficient energy source, the proportion of natural gas in the world's primary energy consumption structure is increasing year by year. By the end of 2015, my country's apparent consumption of natural gas was about 186.6 billion cubic meters, a year-on-year increase of 4.48%, of which about 60 billion cubic meters of natural gas was imported, and the foreign dependence was close to 32%. In order to alleviate the contradiction between supply and demand in my country's natural gas market and ensure energy security, it is necessary to vigorously ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/14B01J23/83B01J35/10
CPCB01J21/14B01J23/002B01J23/83B01J2523/00B01J35/615B01J2523/847B01J2523/3706B01J2523/31B01J2523/22B01J2523/41
Inventor 李晨佳马超史立杰刘鹏翔郭迎秋史一超常俊石
Owner XINDI ENERGY ENG TECH
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