Method for preparing alkane through lignin derivative in ionic liquid system
A technology of ionic liquid and lignin, which is applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, petroleum industry, etc., can solve the problems of high pressure and achieve the effects of improving the utilization rate of metals, avoiding reactions, and high selectivity
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Embodiment 1
[0026] Adopt the Ru / SBA-15 of 5wt% in this embodiment as catalyst, its preparation method is as follows:
[0027] Weigh 0.25g of ruthenium chloride (Ru 40%) and dissolve it in 20mL of deionized water, add the aqueous solution of ruthenium chloride to 2g of SBA-15 molecular sieve, and stir evenly with a glass rod. After mixing, it was placed in a blast drying oven at 100°C for 10 hours. Then the loaded metal salt was placed in a tube furnace under an argon atmosphere and calcined at 500° C. for 5 hours, and then cooled naturally. Finally, the gas atmosphere was changed, calcined at 500° C. for 4 hours under the condition of hydrogen, and cooled naturally to obtain the target catalyst. The preparation methods of other metal catalysts are similar to the above methods.
[0028] Carry out the hydrodeoxygenation experiment concrete operation steps of phenol in ionic liquid solvent system as follows:
[0029] Add 1mmol of phenol, 0.1g of catalyst Ru / SBA-15, 2g of ionic liquid, 0.1...
Embodiment 2
[0034] In this example, 5 wt% of Ru / SBA-15, Ir / SBA-15, Rh / SBA-15, Pt / SBA-15, Ru / C, Ru / SiO 2 , Re / SBA-15, Pd / SBA-15 and Ru / γ-Al 2 o 3 As a catalyst, in the ionic liquid [Bmim]PF 6 The specific operation steps of the hydrodeoxygenation experiment of diphenyl ether in the solvent system are as follows:
[0035] 1mmol diphenyl ether, 0.1g catalyst, 2g ionic liquid [Bmim]PF 6 , 0.1735g of n-dodecane and magnetons were added into a stainless steel autoclave with polytetrafluoroethylene lining, and sealed. Introduce high-purity hydrogen to ventilate the reactor for 3 times to evacuate the air in the reactor, and inject 2MPa high-purity hydrogen. The reaction kettle was put into a high-pressure reaction furnace and heated to 130° C., and reacted for 6 hours with a stirring rate of 600 rpm. After the reaction is over, put the reaction kettle into the ice-water mixture to quench and condense for 2 hours, empty the hydrogen in the kettle and sweep it with nitrogen to completely remo...
Embodiment 3
[0040] Add 1 mmol guaiacol, 0.1 g catalyst Ir / SBA-15, 2 g ionic liquid [Bmim] PF6, 0.1735 g n-dodecane and magnetons into a stainless steel autoclave with Teflon liner, seal . Introduce high-purity hydrogen to ventilate the reactor for 3 times to evacuate the air in the reactor, and inject 2MPa high-purity hydrogen. The reaction kettle was put into a high-pressure reaction furnace and heated to 130° C., and reacted for 6 hours with a stirring rate of 600 rpm. After the reaction is over, put the reaction kettle into the ice-water mixture to quench and condense for 2 hours, empty the hydrogen in the kettle and sweep it with nitrogen to completely remove the hydrogen, open the reaction kettle, and extract the reaction with 8mL methyl tert-butyl ether product. The obtained products were analyzed qualitatively and quantitatively by gas chromatography-mass spectrometry (GC-MS) and gas phase analyzer (GC). The analysis results showed that the conversion rate of guaiacol was 100%, ...
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