Catalyst used for directly preparing light hydrocarbons from synthetic gas and application method thereof
A low-carbon hydrocarbon and synthesis gas technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low selectivity of low-carbon hydrocarbons, low CO conversion rate, unfriendly environment, etc., to achieve Effects of increasing selectivity, increasing olefin ratio, and increasing CO conversion rate
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Embodiment 1
[0030] According to the method described above, weigh each component according to the mass fraction: In 2 o 3 60%, ZrO 2 30%, Al 2 o 310%, each component is mixed uniformly by grinding, and then calcined at 500° C. for 1 hour, and then the calcined catalyst is pressed into tablets to 60-80 mesh. The SAPO-34 molecular sieve is pressed into tablets to a size of 60-80 mesh. Mix the oxide and molecular sieve particles evenly at a mass ratio of 1:1, and the detailed formula is shown in Table 1.
[0031] Catalyst evaluations were performed on a fixed bed microreactor. The reactor adopts a stainless steel reactor lined with a quartz tube. The catalyst is first reduced with pure hydrogen in the reactor at normal pressure and 400°C for 2 hours, then switched to synthesis gas, at 400°C, 4.0Mpa, 2000h -1 The reaction was carried out for 20 hours under the condition of space velocity, and the reaction product was monitored online by gas chromatography. The reaction results are sh...
Embodiment 2
[0033] According to the method described above, weigh each component according to the mass fraction: In 2 o 3 50%, ZrO 2 40%, Al 2 o 3 10%, each component is mixed uniformly by grinding, and then calcined at 500° C. for 1 hour, and then the calcined catalyst is pressed into tablets to 60-80 mesh. The SAPO-34 molecular sieve is pressed into tablets to a size of 60-80 mesh. Mix the oxide and molecular sieve particles evenly at a mass ratio of 1:1, and the detailed formula is shown in Table 1. Tested according to the process conditions of Example 1, the implementation results are shown in Table 2.
Embodiment 3
[0035] According to the method described above, weigh each component according to the mass fraction: In 2 o 3 40%, ZrO 2 50%, Al 2 o 3 10%, each component is mixed uniformly by grinding, and then calcined at 500° C. for 1 hour, and then the calcined catalyst is pressed into tablets to 60-80 mesh. The SAPO-34 molecular sieve is pressed into tablets to a size of 60-80 mesh. Mix the oxide and molecular sieve particles evenly at a mass ratio of 1:1, and the detailed formula is shown in Table 1. Tested according to the process conditions of Example 1, the implementation results are shown in Table 2.
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