Method for preparing 4-ethyl-2-metoxyphenol by catalytic pyrolysis of biomass
A methoxyphenol, catalytic pyrolysis technology, applied in chemical instruments and methods, physical/chemical process catalysts, ether preparation, etc., can solve the problems of complex extraction process steps, waste liquid that is difficult to handle, and uneconomical, etc. It achieves the effects of simple composition, low requirements for equipment and reaction conditions, and reduced production costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] Weigh 0.50 g of palladium nitrate dihydrate (Pd(NO 3 ) 2 ·2H 2 O) Dissolve in 100mL deionized water, stir until completely dissolved, add 8.00g MCM-41 to the solution, slowly drop ammonia water (25%) into the mixture under stirring until the pH value reaches 10, then continue Stir at room temperature for 12 h. After stirring, the solid was filtered, dried at 100°C for 3h, and then reduced in a hydrogen atmosphere (6% hydrogen and nitrogen as protective gas) at 280°C for 3h (programmed temperature was 2°C / min). 8.01 g of Pd / MCM-41 were obtained with a Pd loading of 2%.
[0027] Take 2g of the above catalyst, grind to a particle size of less than 0.5mm, take 10g of larch wood as a raw material, grind to a particle size of less than 0.3mm, mechanically mix the two, and rapidly pyrolyze them for 20s at 290°C under a nitrogen atmosphere. The content of 4-ethyl-2-methoxyphenol was analyzed by gas chromatography, and the yield of 4-ethyl-2-methoxyphenol was calculated to b...
Embodiment 2
[0029] Get 5g of catalyst in above-mentioned embodiment 1, grind to particle size less than 0.5mm, take 10g spruce wood as raw material, grind to particle size less than 0.3mm, after both are mechanically mixed, rapidly pyrolyze at 330 ° C under nitrogen atmosphere 15s, the obtained liquid yield was 42.8%, the content of 4-ethyl-2-methoxyphenol was analyzed by gas chromatography, and the yield of 4-ethyl-2-methoxyphenol was calculated to be 2.3%; The content of 4-ethyl-2-methoxyphenol in the organic liquid product (excluding water) was 11.0%.
Embodiment 3
[0031] Weigh 1.25 g of palladium nitrate dihydrate (Pd(NO 3 ) 2 ·2H 2 O) Dissolve in 100mL deionized water, stir until completely dissolved, add 7.80g SBA-15 to the solution, slowly drop ammonia water (25%) into the mixture under stirring until the pH value reaches 9, then continue Stir at room temperature for 12 h. After stirring, the solid was filtered, dried at 100°C for 3h, and then reduced in a hydrogen atmosphere (6% hydrogen and nitrogen as protective gas) at 280°C for 3h (programmed temperature was 2°C / min). 8.05 g of Pd / SBA-15 were obtained with a Pd loading of 5%.
[0032] Take 2g of the above catalyst, grind it to a particle size of less than 0.5mm, take 10g of cedar wood as a raw material, grind it to a particle size of less than 0.3mm, mechanically mix the two, and rapidly pyrolyze them for 15s at 300°C under a nitrogen atmosphere. The content of 4-ethyl-2-methoxyphenol was analyzed by gas chromatography, and the yield of 4-ethyl-2-methoxyphenol was calculated...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More