A kind of black liquor lignin hydrogenolysis catalyst and its preparation method and application
A technology of lignin and catalyst, applied in the field of lignin hydrogenolysis
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Embodiment 1
[0043] Weigh 0.5g of iridium acetate and dissolve it in 10mL of absolute ethanol, then add 10g of HZSM-5 molecular sieve. After stirring for 15 minutes, 2 mL of tetrabutyl titanate and 0.20 mL of 0.5 M hydrochloric acid solution were added dropwise, and 0.04 mL of acetylacetone was used as an initiator. After 10 minutes of reaction, 5 mL of a mixed solution of deionized water and ethanol was added (v:v=1 : 1) tetrabutyl titanate is hydrolyzed, and stirring is stopped after generating a gel. Aged at room temperature for 12 hours, then vacuum dried at 100°C. The dried powder was calcined at 500 °C for 5 hours to obtain Ir / HZSM-5@TiO loaded with 10 wt% TiO2 and 5 wt% Ir 2 catalyst.
Embodiment 2
[0045](1) Weigh 0.1g of iridium acetate and dissolve it in 10mL of absolute ethanol, then add 10g of HZSM-5 molecular sieve. After stirring for 15 minutes, 3 mL of tetrabutyl titanate and 0.20 mL of 0.5 M hydrochloric acid solution were added dropwise, and 0.04 mL of acetylacetone was used as an initiator. After 10 minutes of reaction, 5 mL of a mixed solution of deionized water and ethanol was added (v:v=1 : 1) tetrabutyl titanate is hydrolyzed, and stirring is stopped after generating a gel. Aged at room temperature for 12 hours, then vacuum dried at 100°C. The dried powder was calcined at 550 °C for 5 hours to obtain Ir / HZSM-5@TiO loaded with 15 wt% TiO2 and 1 wt% Ir 2 catalyst.
Embodiment 3
[0047] (1) Weigh 1.0g of iridium acetate and dissolve it in 10mL of absolute ethanol, then add 10g of HZSM-5 molecular sieve. After stirring for 15 minutes, add 6 mL of tetrabutyl titanate and 0.20 mL of 0.5 M hydrochloric acid solution dropwise, use 0.04 mL of acetylacetone as the initiator, and add 5 mL of a mixed solution of deionized water and ethanol after 10 minutes of reaction (v:v=1 : 1) tetrabutyl titanate is hydrolyzed, and stirring is stopped after generating a gel. Aged at room temperature for 12 hours, then vacuum dried at 100°C. The dried powder was calcined at 600 °C for 5 hours to obtain Ir / HZSM-5@TiO loaded with 30 wt% TiO2 and 10 wt% Ir 2 catalyst.
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