Preparation method and application of biomass charcoal assisted synthesis bifunctional catalyst
A dual-function catalyst, biomass carbon technology, applied in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of low catalyst selectivity, long-term storage of precious metal nanocatalysts, and complex preparation processes, etc. Achieve the effect of promoting sustainability and cost reduction, good isomer selectivity and stability, and simple synthesis steps
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Embodiment 1
[0034] First, use 1.0 mL of H with a concentration of 0.133 mol / L 2 PtCl 6 The solution was impregnated with 0.283 g of commercially available biomass capacitor carbon powder, maintained at room temperature for 24 h, dried, and calcined to obtain the metal@biomass carbon precursor (M@RS). M@RS was mixed with 0.25 g silica, 2.912 g pseudoboehmite, 6.28 g DPA·H 3 PO 4 Mixed and ground for 5 min, placed in a hydrothermal kettle for crystallization at 185 °C for 24 h, the reacted product was washed by centrifugation, dried at 80 °C and calcined at 600 °C for 5 h in an air atmosphere to obtain the final catalyst product. The samples prepared above were tested by plasma emission spectrometry (ICP), and the metal loading was determined to be 0.5 wt%. The obtained catalyst was named M@RS / S11.
Embodiment 2
[0036] First, use 1.0 mL of H with a concentration of 0.133 mol / L 2 PtCl 6The solution was impregnated with 0.283 g of commercially available coconut shell charcoal powder, maintained at room temperature for 24 h, dried, and calcined to obtain the metal@biomass charcoal precursor (M@CS). Mix M@CS with 0.25 g silica, 2.912 g pseudoboehmite, 6.28 g DPA·H 3 PO 4 Mixed and ground for 5 min, placed in a hydrothermal kettle for crystallization at 185 °C for 24 h, the reacted product was washed by centrifugation, dried at 80 °C and calcined at 600 °C for 5 h in an air atmosphere to obtain the final catalyst product. The samples prepared above were tested by plasma emission spectrometry (ICP), and the metal loading was determined to be 0.5 wt%. The obtained catalyst was named M@CS / S11.
Embodiment 3
[0038] First, use 1.0 mL of H with a concentration of 0.133 mol / L 2 PtCl 6 The solution was impregnated with 0.283 g of commercially available walnut shell carbon powder, maintained at room temperature for 24 h, dried, and calcined to obtain the metal@biomass carbon precursor (M@WS). M@WS was mixed with 0.25 g silica, 2.912 g pseudoboehmite, 6.28 g DPA·H 3 PO 4 Mixed and ground for 5 min, placed in a hydrothermal kettle for crystallization at 185 °C for 24 h, the reacted product was washed by centrifugation, dried at 80 °C and calcined at 600 °C for 5 h in an air atmosphere to obtain the final catalyst product. The samples prepared above were tested by plasma emission spectrometry (ICP), and the loading amount of metal was measured to be 0.5wt%. The obtained catalyst was named M@WS / S11.
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