A kind of catalyst for carbonyl sulfide purification and its preparation method and application
A technology of catalyst and carbonyl sulfide, which is applied in the field of carbonyl sulfide purification catalyst and its preparation, can solve the problems affecting the application and difficult carbonyl sulfide catalytic conversion, and achieve the effects of uniform distribution, excellent low-temperature activity, and reduced production costs
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[0037] The present invention also provides the preparation method of the catalyst for carbonyl sulfide purification described in the above technical scheme, comprising the following steps:
[0038] (1) after the strong alkali solution and the porous carrier are heated, the porous carrier is dried to obtain an alkalized carrier;
[0039] (2) contacting the transition metal salt solution with the alkalized carrier obtained in the step (2) in the form of atomization to obtain a catalyst precursor; the temperature of the contact reaction is 50-250°C;
[0040] (3) The catalyst precursor in the step (2) is subjected to a deep reaction to obtain a catalyst for carbonyl sulfide purification; the temperature of the deep reaction is 300-400°C.
[0041] In the present invention, unless otherwise specified, the raw materials used are commercially available commodities well known to those skilled in the art.
[0042] In the present invention, after the strong alkali solution and the porou...
Embodiment 1
[0058] (1) weigh 10g of activated alumina balls, wash three times with absolute ethanol and distilled water respectively, and dry at 90°C;
[0059] (2) The dried alumina balls were placed in 100 mL of KOH aqueous solution (KOH concentration was 1 mol / L), immersed for 3 hours at 80°C, filtered, dried and put into quartz in the tube.
[0060] (3) Weigh 1.5g of ferric nitrate and 0.4g of copper nitrate and dissolve them in 10mL of water; the aqueous solution is placed in an ultrasonic atomization tank, and the solution is brought into a quartz tube by air after atomization, and contacted with activated alumina balls at 50°C reaction for 3 hours;
[0061] (4) Turn off the power of the ultrasonic atomizer, and continue to react at 80°C for 10 hours;
[0062] (5) Program the temperature to 400° C., and continue to introduce air to continue the reaction for 3 hours to obtain a catalyst.
Embodiment 2
[0064] (1) weigh 6g coconut shell activated carbon particles, wash 3 times with dehydrated alcohol and distilled water successively respectively, and dry at 60 ℃;
[0065] (2) the coconut shell activated carbon particles after drying are placed in the NaOH aqueous solution (NaOH concentration is 1.5mol / L) of 100mL, under the condition of 100 DEG C, filter after immersion for 2 hours, after the coconut shell activated carbon particles are dried into the quartz tube.
[0066] (3) Weigh 2.5g of nickel nitrate and dissolve it in 5mL of water; the aqueous solution is placed in an ultrasonic atomization tank, and after the solution is atomized, it is brought into a quartz tube by 5wt. Activated carbon contact reaction for 2 hours;
[0067] (4) Turn off the power of the ultrasonic atomizer, and continue to react at 60°C for 10 hours;
[0068] (5) Program the temperature to 350°C, continuously feed 5 wt.% hydrogen (equilibrium gas is nitrogen) and react for 3 hours to obtain a catal...
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