HZSM-5 supported Fe-Pd bimetallic catalyst for lignin hydrogenation and depolymerization and preparation method thereof
A bimetallic catalyst, hydrogenation depolymerization technology, applied in molecular sieve catalysts, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc. stable effect
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Embodiment 1
[0045] A HZSM-5 supported bimetallic catalyst, in which the mass percent content of Fe in the catalyst is 3%, the mass percent content of Pd is 0.5%, and the carrier is HZSM-5.
[0046] Among them, the carrier HZSM-5 is obtained by high-temperature deamination of ZSM-5, and has obvious acid sites and porous structure.
[0047] Using ferric sulfate heptahydrate and palladium nitrate dihydrate as raw materials, the HZSM-5 supported Fe-Pd bimetallic catalyst was prepared through impregnation, roasting and reduction, specifically including the following steps, in molar volume parts, mmol / mL:
[0048] First, add iron source and palladium source into dilute hydrochloric acid according to the molar ratio of 5.886:0.519, stir at room temperature at a speed of 300r / min for 2min to fully mix iron source and palladium source, wherein the volume ratio of iron source to dilute hydrochloric acid It is 5.886 mole parts: 100 volume parts. Add 12 mass parts of HZSM-5 molecular sieves to the a...
Embodiment 2
[0050] A HZSM-5 supported bimetallic catalyst, in which the mass percent content of Fe in the catalyst is 9%, the mass percent content of Pd is 2%, and the carrier is HZSM-5.
[0051] Among them, the carrier HZSM-5 is obtained by high-temperature deamination of ZSM-5, and has obvious acid sites and porous structure.
[0052] Using ferric chloride hexahydrate and palladium acetate as raw materials, the HZSM-5 supported Fe-Pd bimetallic catalyst was prepared through impregnation, roasting and reduction, specifically including the following steps, in molar volume parts, mmol / mL:
[0053] First, the iron source and the palladium source are added into the dilute hydrochloric acid according to the molar ratio of 17.661:2.064, and stirred at a speed of 400r / min for 4 minutes at room temperature to fully mix the iron source and the palladium source, wherein the ratio of the iron source to the dilute hydrochloric acid is 17.661 parts by mole: 100 parts by volume. Add 11 mass parts of ...
Embodiment 3
[0055] A HZSM-5 supported bimetallic catalyst, in which the mass percent content of Fe in the catalyst is 8.9%, the mass percent content of Pd is 0.8%, and the carrier is HZSM-5.
[0056] Among them, the carrier HZSM-5 is obtained by high-temperature deamination of ZSM-5, and has obvious acid sites and porous structure.
[0057] Using ferric nitrate nonahydrate and palladium chloride as raw materials, the HZSM-5 supported Fe-Pd bimetallic catalyst was prepared through impregnation, roasting and reduction, specifically including the following steps, in molar volume parts, mmol / mL:
[0058] First, add the iron source and palladium source into the dilute hydrochloric acid according to the molar ratio of 17.465:0.823, and stir at a speed of 350r / min for 3 minutes at room temperature to fully mix the iron source and palladium source, wherein the ratio of iron source and dilute hydrochloric acid is 17.465 Parts by mole: 100 parts by volume. Then add 10 parts by mass of HZSM-5 molec...
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