Unlock instant, AI-driven research and patent intelligence for your innovation.

Hexaaluminate, carrier containing hexaaluminate, preparation method of hexaaluminate, and high temperature methanation catalyst

A technology of hexaaluminate and carrier is applied in the field of high temperature methanation catalyst and its preparation, which can solve the problems of low production efficiency, many steps and high discharge, and achieve the effects of high production efficiency, perfect crystal phase and low roasting temperature

Inactive Publication Date: 2018-02-09
XINDI ENERGY ENG TECH
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention mainly solves the problems of many steps, low production efficiency and high emission in the prior art, and provides a preparation method of a high-temperature methanation catalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hexaaluminate, carrier containing hexaaluminate, preparation method of hexaaluminate, and high temperature methanation catalyst
  • Hexaaluminate, carrier containing hexaaluminate, preparation method of hexaaluminate, and high temperature methanation catalyst
  • Hexaaluminate, carrier containing hexaaluminate, preparation method of hexaaluminate, and high temperature methanation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Preparation of barium hexaaluminate: Dissolve 6.57g of barium nitrate in 100ml of distilled water, disperse 20.5g of SB powder in 400ml of water under rapid stirring, raise the temperature of the water bath to 40°C, and add the barium nitrate solution to the SB under continuous stirring. powder suspension, adjust the pH of the mixed solution to 5.0 with 40% nitric acid, and stir for 30 minutes; dissolve 3.0 g of ammonium carbonate in 100 ml of distilled water to prepare an alkali solution, slowly add the alkali solution dropwise to the above mixed solution, and Continue to react for 1 hour, filter, wash with distilled water, dry at 110°C for 5 hours, roast at 1200°C for 3 hours, and grind to obtain 19.5g of barium hexaaluminate.

[0037] The barium hexaaluminate prepared by this method adopts the Japan Rigaku D / max-2200PC X-ray diffractometer to analyze the catalyst phase results as follows figure 2 As shown, with obvious barium hexaaluminate (BaAl 12 o 19 ) crystal s...

Embodiment 2

[0043] Preparation of barium hexaaluminate: Dissolve 6.57g of barium nitrate in 100ml of distilled water, disperse 20.5g of ordinary pseudoboehmite powder in 300ml of water under rapid stirring conditions, raise the temperature of the water bath to 60°C, and dissolve the nitric acid Add the barium solution to the suspension of pseudo-boehmite powder, adjust the pH of the mixture to 1.0 with 40% nitric acid, and stir for 60 minutes; dissolve 3.0 g of ammonium carbonate in 100 ml of distilled water to obtain an alkali solution, and slowly dissolve the alkali solution Add it dropwise into the above mixture, and continue to react for 1 hour, filter, wash with distilled water, dry at 110°C for 5 hours, roast at 1200°C for 3 hours, and grind to obtain 19.5g of barium hexaaluminate.

[0044] The barium hexaaluminate prepared by this method adopts the Japan Rigaku D / max-2200PC X-ray diffractometer to analyze the catalyst phase results as follows image 3 As shown, with obvious barium ...

Embodiment 3

[0050] Preparation of barium hexaaluminate: Dissolve 6.57g of barium nitrate in 100ml of distilled water, disperse 20.5g of SB powder in 400ml of water under rapid stirring, raise the temperature of the water bath to 50°C, and add the barium nitrate solution to the SB under continuous stirring. powder suspension, adjust the pH of the mixed solution to 3.0 with 65% nitric acid, and stir for 30 minutes; dissolve 3.0 g of ammonium carbonate in 100 ml of distilled water to prepare an alkaline solution, slowly drop the alkaline solution into the above mixed solution, and Continue to react for 1 hour, filter, wash with distilled water, dry at 110°C for 5 hours, roast at 1200°C for 3 hours, and grind to obtain 19.5g of barium hexaaluminate.

[0051] The barium hexaaluminate prepared by this method adopts the Japan Rigaku D / max-2200PC X-ray diffractometer to analyze the catalyst phase and finds that the hexaaluminate has obvious barium hexaaluminate (BaAl 12 o 19 ) crystal structure ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a hexaaluminate, a carrier containing the hexaaluminate, a preparation method of the hexaaluminate, and a high temperature methanation catalyst. The hexaaluminate is preparedvia following steps: A, pseudo-boehmite is dispersed in distilled water under high speed stirring so as to obtain a suspension solution, wherein the solid liquid ratio is controlled to be 1:8-1:40, and preferably 1:10-1:30, water bath temperature is increased to 25 to 100 DEG C, and preferably 25 to 80 DEG C; B, an alkaline earth metal salt solution is added into the suspension solution, wherein the alkaline earth metal to aluminum molar ratio is controlled to be 1:7-15, the pH value is adjusted to 0.1 to 6 with nitric acid, an alkali is added into the suspension solution for continuous reaction, and precipitation is carried out; and C, an obtained precipitate is washed with distilled water, and is subjected to drying and roasting so as to obtain the hexaaluminate.

Description

technical field [0001] The invention relates to the field of methanation of carbon oxides, in particular to a high-temperature methanation catalyst and a preparation method thereof. technical background [0002] The methanation reaction is the simplest Fischer-Tropsch synthesis reaction, and it is widely used in ammonia synthesis, coal-to-natural gas, coke-oven gas-to-LNG, and hydrogen fuel cells, especially in the fields of coal-to-natural gas and coke-oven gas-to-LNG. Coal gasification and further methanation through technical means, or coke oven gas containing H 2 , CO, CO 2 The methanation of component gases to produce methane can effectively fill the shortage of gas sources in my country. [0003] Methanation reactions mainly include CO methanation and CO 2 For methanation, both reactions are strongly antithermal reactions. At present, there are relatively mature synthesis gas and coke oven gas methanation technologies abroad and at home, but in actual process opera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/16B01J21/02B01J23/02B01J23/78B01J32/00B01J35/10B01J37/08B01J37/02C07C1/04C07C1/12C07C9/04C10L3/08
CPCC10L3/08C01F7/168C07C1/0435C07C1/12B01J21/005B01J21/02B01J23/002B01J23/005B01J23/02B01J23/78B01J37/0009B01J37/0201B01J37/088C01P2006/16C01P2006/12C01P2006/14B01J2523/00B01J35/613B01J35/615B01J35/633B01J35/647C07C9/04
Inventor 堵俊俊刘鹏翔高珠张伟康
Owner XINDI ENERGY ENG TECH