Catalyst for hydrogen production from methane and preparation method and application thereof
A catalyst and methane technology, which is applied in the field of methane hydrogen production catalyst and its preparation, can solve the problems of large initial investment and achieve the effects of uniform distribution, light relative weight and promotion of dispersion
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[0035] This embodiment also provides a method for preparing a methane hydrogen production catalyst, comprising the following steps:
[0036] (1) Preparation of silicon-aluminum-titanium composite oxide: Add titanium source, aluminum source and silicon source solutions into the reaction vessel, adjust the pH of the mixed solution at a certain temperature to form a precipitate, age for a certain period of time, filter the precipitate, wash, Dry to obtain silicon-aluminum-titanium composite oxide;
[0037] (2) Preparation of powder catalyst: disperse the silicon-aluminum-titanium composite oxide prepared in step (1) in the palladium source impregnation solution, stir at a certain temperature for a certain period of time, evaporate the water to dryness, then continue drying and calcining to obtain a powder catalyst ;
[0038] (3) Mix the powder catalyst prepared in step (2) with the molding aid glass fiber and deionized water, and process the mixture, mud refining, aging and extr...
example 1
[0049] (1) Take 1L mixed solution of titanium nitrate, aluminum nitrate and sodium silicate, the concentration of titanium nitrate is calculated as TiO 2 Calculated as 20g / L, the concentration of aluminum nitrate is Al 2 o 3 Calculated as 100g / L, the concentration of sodium silicate is SiO 2 Calculated as 40g / L. Add the mixed solution into the constant temperature reaction kettle, control the temperature in the constant temperature reaction kettle to be 65°C, and add K 2 CO 3 aqueous solution, the rate of addition is 4mL / min, and the pH value of the mixed solution in the constant temperature reactor is adjusted to 8.0. After continuing to stir at constant temperature for 1.5 h, the mixed solution in the constant temperature reaction kettle was filtered to obtain a solid. The solid matter was washed 4 times, and then dried at 80° C. for 8.0 hours to obtain a silicon-aluminum-titanium composite oxide.
[0050] (2) Take 0.5L palladium nitrate impregnation solution, the conc...
example 2
[0054] (1) Take 1L mixed solution of titanium nitrate, aluminum nitrate and sodium silicate, the concentration of titanium nitrate is calculated as TiO 2 Calculated as 40g / L, the concentration of aluminum nitrate is Al 2 o 3 Calculated as 80g / L, the concentration of sodium silicate is SiO 2 Calculated as 60g / L. Add the mixed solution into the constant temperature reaction kettle, control the temperature in the constant temperature reaction kettle to be 75°C, and add the solute mass fraction of 50% K 2 CO 3 aqueous solution, the rate of addition is 2mL / min, and the pH value of the mixed solution in the constant temperature reactor is adjusted to 10.0. After continuing to stir at constant temperature for 1.5 h, the mixed solution in the constant temperature reaction kettle was filtered to obtain a solid. The solid matter was washed 4 times, and then dried at 100° C. for 8.0 hours to obtain a silicon-aluminum-titanium composite oxide.
[0055] (2) Take 0.5L palladium nitrat...
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