Preparation method of magnetic nano iron-molybdenum composite catalyst and application of catalyst
A composite catalyst and magnetic nano technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems that have not been overcome, and achieve the effects of improving dispersion, convenient reaction conditions, and unique methods
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Embodiment 1
[0026] Embodiment 1: A kind of preparation method of magnetic nano-iron-molybdenum composite catalyst, this preparation method is first to weigh 0.24mmol ammonium molybdate tetrahydrate, 3.6mmol thiourea joins in 50mL deionized water and fully mixes and dissolves, and the above-mentioned mixed solution The pH was adjusted to 0.9 with dilute hydrochloric acid solution, then transferred to a reaction kettle and sealed, and reacted at 150°C for 25 hours. After the reaction, it was lowered to room temperature. The product was sonicated for 30 minutes and then centrifuged, alternately washed with methanol and deionized water for 3 times, dried at 55°C for 14 hours, crushed to a uniform powder and passed through a 200-mesh sieve to obtain nanomolybdenum disulfide. Take 5.0mmol nano-molybdenum disulfide and add it to 80mL deionized water, and ultrasonically disperse it evenly; then weigh 4.0mmol ferrous sulfate heptahydrate and dissolve it in the above dispersion, stir evenly, and ad...
Embodiment 2
[0028] Embodiment 2: a kind of preparation method of magnetic nano-iron-molybdenum composite catalyst, this preparation method is first to take by weighing 0.32mmol ammonium molybdate tetrahydrate and 8.0mmol thiourea to join in 60ml deionized water and fully mix and dissolve, the above mixed solution The pH was adjusted to 1.1 with dilute hydrochloric acid solution, then transferred to a reaction kettle and sealed, and reacted at 160°C for 24 hours. After the reaction, it was lowered to room temperature. The product was sonicated for 25 minutes and then centrifuged, washed alternately with methanol and deionized water for 4 times, dried at 60°C for 12 hours, crushed to a uniform powder and passed through a 200-mesh sieve to obtain nanomolybdenum disulfide. Take 6mmol nano-molybdenum disulfide and add it to 100mL deionized water, and ultrasonically disperse it evenly; then weigh 10mmol ferrous sulfate heptahydrate and dissolve it in the above dispersion, stir evenly, and adjus...
Embodiment 3
[0030]Embodiment 3: a kind of preparation method of magnetic nano-iron-molybdenum composite catalyst, this preparation method is to first weigh 0.39mmol ammonium molybdate tetrahydrate and 7.7mmol thiourea and join in 60ml deionized water and fully mix and dissolve, and the above mixed solution The pH was adjusted to 0.8 with dilute hydrochloric acid solution, then transferred to a reaction kettle and sealed, and reacted at 180°C for 24 hours. After the reaction, it was lowered to room temperature. The product was sonicated for 30 minutes and then centrifuged, alternately washed with methanol and deionized water for 3 times, dried at 60°C for 12 hours, and crushed until a uniform powder passed through a 200-mesh sieve to obtain nanomolybdenum disulfide. Take 7mmol nano-molybdenum disulfide and add it to 120mL deionized water, and ultrasonically disperse it evenly; then weigh 14mmol ferrous sulfate heptahydrate and dissolve it in the above dispersion, stir evenly, and adjust th...
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