Catalyst composition and process for converting aliphatic oxygenates to aromatics
A composition and catalyst technology, applied in the direction of carbon compound catalysts, hydrocarbon production from oxygen-containing organic compounds, chemical instruments and methods, etc., to achieve the effects of low cost, good selectivity, and high yield
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Embodiment 1
[0062] Similar to Comparative Experiment C, 0.6 g of lanthanum nitrate dissolved in 100 g of distilled water, and 0.5 g of molybdenum oxide, 0.06 g of zinc oxide and 2.6 g of copper nitrate trihydrate dissolved in 100 g of water at 85 ° C were used to prepare the improved Proactive ZSM-5 catalyst. The two solutions were mixed and 10 g of ZSM-5 was added to the solution and heated at 85° C. in a closed vessel for 8 h; resulting in approximately 2 mass % La, 3 mass % Mo, 0.5 mass % Zn and 7% by mass of Cu was added to ZSM-5.
[0063] Similar to Comparative Experiments C and D, the dried and calcined catalyst was used to convert methanol. Table 1 shows that the yield and BTX selectivity are significantly improved.
Embodiment 2
[0065] Catalysts were prepared by ion exchange and heat treatment of ZSM-5, commercially available from Zeolists, with the desired amount of metal. Dissolve 0.6 g of lanthanum nitrate (fluka) in 100 g of distilled water and heat at 60-65° C. with constant stirring. 0.5 g of molybdenum oxide and 0.06 g of zinc oxide were dissolved in 100 g of water at 85° C. and pH 5. The two solutions were mixed and 10 g of ZSM-5 was added to the solution and heated at 85° C. for 8 h in a closed vessel. This reflects the addition of about La (2%), Mo (3%) and Zn (0.5%) to ZSM-5. The prepared catalyst was filtered and washed with 3 liters of hot water. The prepared catalyst slurry was dried at 120° C. for 16 h in a closed oven. The dried catalyst was calcined to 450 °C in a rotary furnace with a temperature rise of 1 °C per minute and kept at 450 °C for 6 h.
[0066] A catalyst with a mesh size of 40-60 is loaded into a tubular fixed-bed reactor to convert methanol. The reaction was carrie...
Embodiment 3
[0068] Similar to Comparative Experiment C, ZSM-5 (from Zeolists) was ion-exchanged and heat-treated using 0.6 g of lanthanum nitrate dissolved in 100 g of distilled water and 0.5 g of molybdenum oxide dissolved in 100 g of water to prepare the catalyst; resulting in ZSM- 5 has about 2% by mass of La and 3% by mass of Mo.
[0069]Similar to Comparative Experiment C, a dry and calcined 40-60 mesh catalyst was used to convert methanol. Table 1 summarizes the results.
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