Method for preparing oxygen carrier of chemical-looping hydrogen production by means of titanomagnetite
A titanomagnetite and oxygen carrier technology, applied in the production of hydrogen and other directions, can solve the problems of complex process, inactivation, difficult operation, etc., and achieve the effects of simple process, strong stability and high activity
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Embodiment 1
[0025] The specific steps of the method for preparing an oxygen carrier for chemical chain hydrogen production by using titanomagnetite are as follows:
[0026] (1) Ball milling treatment: First, grind the titanomagnetite for 2 hours to a particle size of less than 200 mesh titanomagnetite; the composition of titanomagnetite is shown in Table 1.
[0027] (2) Pickling treatment: add 1.5mol / L hydrochloric acid solution to the titanomagnetite obtained in step (1) in equal volume, soak for 10h, and then sonicate it under 500W power for 2h to obtain slurry;
[0028] (3) Conditioning and modification: Add 10% by volume of titanomagnetite aluminum nitrate solution with a concentration of 0.5mol / L to the slurry obtained in step (2), ultrasonic treatment for 1h to obtain a mixed solution, and then add NaOH solution to The pH of the mixed solution was 9.0 and stirring was continued for 2 hours, and finally settled overnight;
[0029] (4) Calcining treatment: the solution after step (3) conditio...
Embodiment 2
[0034] The specific steps of the method for preparing an oxygen carrier for chemical chain hydrogen production by using titanomagnetite are as follows:
[0035] (1) Ball milling treatment: First, grind the titanium magnetite for 9 hours to a particle size of less than 200 mesh titanium magnetite; the composition of the titanium magnetite is shown in Table 2.
[0036] (2) Pickling treatment: add 3.2mol / L hydrochloric acid solution to the titanomagnetite obtained in step (1) in equal volume, soak for 24h, and then sonicate it under 500W power for 5h to obtain slurry;
[0037] (3) Conditioning and modification: Add 30% of the volume of titanomagnetite to the slurry obtained in step (2) with a 2.5mol / L aluminum nitrate solution, ultrasonic treatment for 1h to obtain a mixed solution, and then add NaOH solution to The pH of the mixed solution was 9.0 and stirring was continued for 5 hours, and finally settled overnight;
[0038] (4) Calcining treatment: the solution after step (3) conditio...
Embodiment 3
[0043] In the method for preparing an oxygen carrier for chemical chain hydrogen production by using titanomagnetite, the specific steps are as follows:
[0044] (1) Ball milling treatment: firstly grind the titanomagnetite for 6 hours to a particle size of less than 200 mesh titanomagnetite; the composition of titanomagnetite is shown in Table 3;
[0045] (2) Pickling treatment: add an equal volume of 2.8mol / L hydrochloric acid solution to the titanium magnetite obtained in step (1), soak for 24h, and then sonicate it for 5h at a power of 500W to obtain a slurry;
[0046] (3) Conditioning modification: Add 20% of the volume of titanomagnetite to the slurry obtained in step (2) with a 2.0mol / L aluminum nitrate solution, ultrasonic treatment for 3h to obtain a mixed solution, and then add NaOH solution to The pH of the mixed solution was 9.0 and stirring was continued for 4 hours, and finally settled overnight;
[0047] (4) Calcining treatment: the solution after step (3) conditioning ...
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