Macroporous iron carbide catalyst, and preparation method and application thereof
An iron carbide and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc., can solve the problems of energy consumption, small preparation amount, single iron carbide, etc. Simple operation method and short cycle effect
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Embodiment 1
[0075] Example 1 Preparation method of carboxyl modified colloidal crystal template
[0076] In this embodiment, the carboxyl modified colloidal crystal template was prepared according to the following method:
[0077] (1) Preparation of monodisperse carboxyl modified polymethyl methacrylate (c-PMMA) microspheres by an improved soap-free emulsion polymerization method
[0078] Add 50ml acetone and 150ml deionized water to a stirrer, reflux condenser, thermometer and N 2 In a 1000ml four-necked flask with trachea, pass N after vacuuming 2 , Add MMA and AA with a volume ratio of 25:1 (both monomers are refined by vacuum distillation), and heat to 80°C. At the same time, weigh 0.27g of the initiator KPS and 0.45g of AIBN, dissolve it in 150ml of water, heat it to 80°C and add it to a four-neck flask. N 2 After reacting for 1.5 hours under protection, it was naturally cooled to room temperature under stirring, ultrasonically treated for 1.5 hours, and suction filtered to obtain c-PMMA p...
Embodiment 2
[0083] Example 2 Preparation method of three-dimensional penetrating iron carbide
[0084] (1) Preparation of monodisperse carboxyl modified polymethyl methacrylate (c-PMMA) microspheres by an improved soap-free emulsion polymerization method
[0085] Add 50ml acetone and 150ml deionized water to a stirrer, reflux condenser, thermometer and N 2 In a 1000ml four-necked flask with trachea, pass N after vacuuming 2 , Add a certain volume ratio of MMA and AA (both monomers are refined by vacuum distillation), and heat to 80°C. At the same time, a certain amount of initiators KPS and AIBN were weighed and dissolved in 150ml of water, heated to 80°C and then added to a four-neck flask. N 2 After reacting for 1.5 hours under protection, it was naturally cooled to room temperature under stirring, ultrasonically treated for 1.5 hours, and suction filtered to obtain c-PMMA polymer microspheres. figure 1 The FT-IR infrared absorption spectrum of the composite is provided.
[0086] (2) Preparat...
Embodiment 3
[0091] Example 3 Results of catalytic performance of macroporous iron carbide catalyst for catalytic conversion of biosyngas to fuel oil
[0092] The gas composition of biosynthesis gas is 20%H 2 , 19%CO, 12%CO 2 , 2%CH 4 And 49% N 2 . The catalyst prepared in Example 2 was first activated by biosynthesis gas at 310°C for 2 hours. The reaction operating conditions are: temperature 310℃, space velocity 2000h -1 , The pressure is 6.5MPa. The experimental results are as Figure 7 Shown. The macroporous iron carbide catalyst shows high catalytic activity and stability, the conversion rate of CO is maintained above 90%, the selectivity of liquid fuel oil products exceeds 60%, and the activity of the catalyst remains basically stable for 500 hours. The results of its catalytic activity for the conversion of biosyngas to fuel oil are as follows Figure 7 Shown.
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