High-temperature-resistant methanation catalyst as well as preparation method thereof
A methanation catalyst, high temperature resistant technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of reducing catalyst surface area, shortening catalyst life, reducing Catalyst activity and other issues, to achieve the effect of reducing interaction, reducing carbon deposition reaction, and improving selectivity
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[0039] Example 1
[0040] The high-temperature methanation catalyst described in this embodiment is mainly prepared from the raw materials described in Table 1:
[0041] Table 1
[0042]
[0043] The methanation catalyst described in this embodiment is prepared by the co-precipitation-isovolume impregnation method, and the specific steps are as follows:
[0044] Weigh 24.8g Ni(NO 3 ) 2 ·6H 2 O, 37.0g Al(NO 3 ) 3 , 0.2g PtCl 2 (NH 3 ) 2 , 100mL deionized water was prepared into an aqueous solution, and 4 g of PEG 400 was added, and stirred evenly. Add ammonia water dropwise to the above solution, adjust the pH to 11, continue ultrasound for 2 hours, let stand for 12 hours, centrifuge, filter, and wash to obtain a solid precipitate, dry at 120°C, and calcinate at 800°C to obtain NiO-Al 2 O 3 catalyst.
[0045] Weigh 0.8g La(NO 3 ) 3 ·6H 2 O, 0.5g Ce(NO 3 ) 3 ·6H 2 O, 0.2g MnCl 2 ·4H 2 O and 0.3gCo(NO 3 ) 2 ·6H 2 O add 10mL of deionized water to prepare a solution, add 0.2g of citric aci...
Example Embodiment
[0046] Example 2
[0047] The high-temperature methanation catalyst described in this embodiment is mainly prepared from the raw materials described in Table 2:
[0048] Table 2
[0049]
[0050] The methanation catalyst described in this embodiment is prepared by the co-precipitation-isovolume impregnation method, and the specific steps are as follows:
[0051] Weigh 24.8g Ni(NO 3 ) 2 ·6H 2 O, 37.0g AlCl 3 , Add 100mL deionized water to make an aqueous solution, and add 5g PEG 400, stir evenly. Add ammonia water dropwise to the above solution, adjust the pH to 11, continue ultrasound for 2 hours, let stand for 12 hours, centrifuge, filter, and wash to obtain a solid precipitate, dry at 120°C, and calcinate at 800°C to obtain NiO-Al 2 O 3 catalyst.
[0052] Weigh 0.8g La(NO 3 ) 3 ·6H 2 O, 0.5g Ce(Ac) 3 ·6H 2 O and 0.3g(NH 4 ) 6 Mo 7 O 24 ·4H 2 O, add NiO-Al with this example 2 O 3 10mL of deionized water with the equivalent volume of the catalyst was prepared into a solution, 0.5g of ...
Example Embodiment
[0053] Example 3
[0054] The high temperature resistant methanation catalyst of this embodiment is mainly prepared from the raw materials described in Table 3:
[0055] table 3
[0056]
[0057] The methanation catalyst described in this embodiment is prepared by the co-precipitation-isovolume impregnation method. The specific steps are as follows: Weigh 14.8g Ni(NO 3 ) 2 ·6H 2 O,68.1g Al(NO 3 ) 3 , 0.04g PtCl 2 (NH 3 ) 2 , Add 100mL deionized water to make an aqueous solution, and add 1 g of PEG 600, and stir well. Add ammonia water dropwise to the above solution, adjust the pH to 11, continue ultrasonication for 1 hour, continue ultrasonication for 4 hours, protect the temperature in an ice-salt bath at 0-2°C, stand for 10 hours, centrifuge, filter, and wash to obtain a solid precipitate The material is dried at 110°C and then calcined at 700°C to obtain NiO-Al 2 O 3 catalyst.
[0058] Weigh 0.8g La(NO 3 ) 3 ·6H 2 O, 0.8g Ce(Ac) 3 ·H 2 O and 0.5g Co(NO 3 ) 2 ·6H 2 O add 10mL of d...
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