Method for preparing complete methanation catalyst for hydrothermal chemical process

A complete methanation, chemical process technology, applied in the field of synthesis gas complete methanation catalyst preparation, to achieve the effects of enhanced energy/resource security, low cost, good catalytic activity and hydrothermal stability

Active Publication Date: 2011-04-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, there are many patented technologies related to gas methanation catalysts, some of which have been commercialized in natural gas plants in the Great Plains of the United States, but there is still no record of long-term industrial operation above 600 °C

Method used

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  • Method for preparing complete methanation catalyst for hydrothermal chemical process
  • Method for preparing complete methanation catalyst for hydrothermal chemical process
  • Method for preparing complete methanation catalyst for hydrothermal chemical process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: Catalyst A

[0048] (1) Weigh 130g Ni(NO 3 ) 2 .6H 2 O, 341g Al(NO 3 ) 3 .9H 2 O, add deionized water to dissolve to 1000mL;

[0049] (2) Weigh 160g of urea, add 500mL of deionized water to dissolve;

[0050] (3) After mixing the solutions (1) and (2), add deionized water to 2000mL,

[0051] (4) Heating the solution to 120°C and keeping the reaction for 8 hours;

[0052] (5) Filter the precipitate, wash twice with 1000mL deionized water; dry at 110°C for 12 hours; place the sample in a muffle furnace after drying, and roast at 500°C for 2 hours at a heating rate of 1°C / min; the resulting product is added with 3% Graphite and 2% cellulose were molded, and then calcined in a muffle furnace at 500°C for 2 hours to form a catalyst precursor.

[0053] Gained catalyst precursor total 80g, composition is 42%NiO-58%Al 2 o 3 ; Under 500 DEG C of hydrogen conditions, it was reduced for 4 hours to obtain catalyst A, which was evaluated according to the met...

Embodiment 2

[0054] Example 2: Catalyst B

[0055] (1) Weigh 130g Ni(NO 3 ) 2 .6H 2 O, 253g Al(NO 3 ) 3 .9H 2 O, 1M Zr(NO 3 ) 4 Solution 97.5mL, add deionized water to dissolve to 1000mL;

[0056] (2) Weigh 150g of urea, add 500mL of deionized water to dissolve;

[0057] (3) After mixing the solutions (1) and (2), add deionized water to 2000mL,

[0058] (4) Heating the solution to 120°C and keeping the reaction for 8 hours;

[0059] (5) Filter the precipitate, wash twice with 1000mL deionized water; dry at 110°C for 12 hours; place the sample in a muffle furnace after drying, and roast at 500°C for 2 hours at a heating rate of 1°C / min; the resulting product is added with 3% Graphite and 2% cellulose were molded, and then calcined in a muffle furnace at 500°C for 2 hours to form a catalyst precursor.

[0060] Gained catalyst precursor total 80g, composition is 42%NiO-43%Al 2 o 3 -15% ZrO 2 ; Under 500 DEG C of hydrogen conditions, it was reduced for 4 hours to obtain catalyst ...

Embodiment 3

[0061] Example 3: Catalyst C

[0062] (1) Weigh 130gNi(NO 3 ) 2 .6H 2 O, 235gAl(NO 3 ) 3 .9H 2 O, 6.4gLa(NO 3 ) 3 .6H 2 O, 1MZr(NO 3 ) 4 Solution 97.5mL, add deionized water to dissolve to 1000mL;

[0063] (2) Weigh 145g of urea, add 500mL of deionized water to dissolve;

[0064] (3) After mixing the solutions (1) and (2), add deionized water to 2000mL,

[0065] (4) Heating the solution to 120°C and keeping the reaction for 8 hours;

[0066] (5) Filter the precipitate, wash twice with 1000mL deionized water; dry at 110°C for 12 hours; place the sample in a muffle furnace after drying, and roast at 500°C for 2 hours at a heating rate of 1°C / min; the resulting product is added with 3% Graphite and 2% cellulose were molded, and then calcined in a muffle furnace at 500°C for 2 hours to form a catalyst precursor.

[0067] The resulting catalyst precursor is 80g in total, and the composition is 42%NiO-40%Al 2 o 3 -15% ZrO 2 -3% La 2 o 3 Reduction under 500 DEG C o...

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Abstract

The invention provides a method for preparing a complete methanation catalyst for a hydrothermal chemical process. The catalyst comprises the following components: 10 to 75 percent of active nickel ingredient, 10 to 90 percent of high-temperature resistant carrier and 0.1 to 15 percent of rare-earth auxiliary agent, wherein the content is counted on the basis of metal oxide, and the percentage is weight percentage of the total weight of the active ingredient, the carrier and the auxiliary agent. The preparation method comprises the following steps of: (a) forming a catalyst precursor by using the hydrothermal chemical synthesis process; and (b) preparing the obtained catalyst precursor into the complete methanation catalyst by filtering, washing, drying, roasting, forming, re-roasting and reducing. The method is convenient for crystallization and precipitation of catalyst materials, and has simple process and good repeatability. The method provides guarantee for meeting the current increasing clean energy requirement, and has irreplaceable important effect on the enhancement of energy / resource safety at the same time.

Description

technical field [0001] The invention belongs to the cross technical field of catalyst and inorganic synthesis chemistry, relates to a preparation method of a catalyst for the methanation of carbon monoxide and carbon dioxide, and particularly relates to the preparation of a synthesis gas complete methanation catalyst with high temperature and pressure resistance and high hydrothermal stability method. Background technique [0002] With the rapid development of the international economy and the increasingly stringent environmental protection regulations in the world, the demand for natural gas, a clean energy source, will continue to rise rapidly in the next ten years, but the current growth rate of natural gas production is far lower than the growth of demand, so the supply and demand of natural gas The contradiction will become increasingly prominent, and the price will remain high. Syngas methanation is one of the important ways to solve the shortage of natural gas, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J37/10C07C9/04C07C1/04C07C1/12
Inventor 王树东袁中山孙天军彭家喜张纯希袁权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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