Preparation method and application of combined use catalyst
A catalyst and hydrogenation catalyst technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc., can solve the problems of low catalytic activity, uneven loading of active components, complex processes, etc. High catalytic activity, improved biomass conversion rate and liquefied product yield, and simple preparation process
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Embodiment 1
[0029] The combination catalyst preparation method described in this embodiment comprises the following steps:
[0030] (1) Select concentrated sulfuric acid, oleum or chlorosulfonic acid as the sulfonating agent, and the volume ratio of the biomass charcoal and the sulfonating agent is 1:5 to 1:15, and the biomass charcoal is treated at a temperature of 120°C to 160°C , the sulfonation time is 1h~10h;
[0031] The biochar after sulfonation treatment is washed with distilled water until it is neutral and then dried. The drying temperature is 60°C-120°C, and the drying time is 2h-12h. 2 / g~200m 2 / g, the pore diameter is 1nm~20nm, the pore volume is 0.01cm 3 / g~0.1cm 3 / g of the first biochar carrier.
[0032] As an embodiment of the present invention, in this embodiment, concentrated sulfuric acid is selected as the sulfonating agent, and the volume ratio of biomass charcoal and sulfonating agent is 1:15, sulfonated at 160 ° C for 10 h, and then washed with distilled water...
Embodiment 2
[0049] The combination catalyst preparation method described in this embodiment comprises the following steps:
[0050] (1) Choose chlorosulfonic acid as the sulfonating agent, according to the volume ratio of biomass charcoal and sulfonating agent 1:12, sulfonate at 120°C for 7h, then wash with distilled water until neutral, dehydrate, and dry at 120°C for 12 Hours, the water content is 5%, the specific surface is 120m 2 / g, pore diameter of 1nm, pore volume of 0.06cm 3 / g of the first biochar carrier.
[0051] (2) Mix 50% ferrous chloride aqueous solution and the first biomass charcoal carrier, in terms of iron element, ferrous chloride accounts for 30% of the mass of the first biomass charcoal carrier, add ammonia water, adjust system pH=9, Control the temperature at 45°C to 60°C, and react for 3 hours. After the reaction was completed, it was washed with distilled water for 3 times, and dried at 110° C. to obtain a hydrolysis hydrogenation catalyst with a water content ...
Embodiment 3
[0060] The combination catalyst preparation method described in this embodiment comprises the following steps:
[0061] (1) Use oleum as the sulfonating agent, according to the volume ratio of biomass charcoal and sulfonating agent 1:5, sulfonate at 135°C for 1h, then wash with distilled water until neutral, dehydrate, and dry at 60°C for 2h , to obtain the first biochar carrier with a water content of 7%.
[0062] (2) 40% mass fraction of ferric chloride and the first biomass charcoal carrier are mixed. In terms of iron element, ferric chloride accounts for 10% of the mass of the first biomass charcoal carrier, and ammonia water is added to adjust the system pH=7 to control The temperature is 75°C-90°C, and the reaction is 1h. After the reaction was completed, it was washed with distilled water for 3 times, and dried at 120° C. to obtain a hydrolysis hydrogenation catalyst with a water content of 9%.
[0063] (3) According to the volume ratio of biochar to 2.5mol / L potassiu...
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