Type-Y molecular sieve absorbent as well as preparation method and method for removing sulfur dioxide in iso-butane
A technology of sulfur dioxide and molecular sieve, applied in adsorption purification/separation, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of difficult and difficult removal of sulfur dioxide, and achieve the effect of high removal rate
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Embodiment 1
[0039] This embodiment provides a method for preparing a transition metal Y-type molecular sieve adsorbent, comprising the following steps:
[0040] Mix kaolin and pseudo-boehmite powder at 1:1 (mass ratio), soak in 0.6g / L NaOH solution at 70°C for 15h, then wash with distilled water until neutral, and dry in an oven at 120°C for 12h , followed by roasting at 550°C for 5 hours to obtain a deacidification-treated carrier, and then grinding it into a powder of less than 300 meshes and extruding it;
[0041] Perform ion exchange loading on the above-mentioned deacidified carrier and NiCl to prepare a semi-finished product of NiY molecular sieve adsorbent (loading capacity is 4%);
[0042] The NiY molecular sieve adsorbent of this example was obtained by drying the semi-finished NiY molecular sieve adsorbent at 120° C. for 12 hours and roasting at 550° C. for 4 hours.
[0043] This embodiment also provides the NiY molecular sieve adsorbent prepared by the above preparation method...
Embodiment 2
[0048] This embodiment provides a method for preparing a transition metal Y-type molecular sieve adsorbent, comprising the following steps:
[0049] Mix attapulgite and pseudoboehmite powder at a ratio of 2:1 (mass ratio), and use 0.8g / L NH 3 ·H 2 Soak the O solution at 70°C for 15 hours, wash with distilled water until neutral, bake in an oven at 120°C for 12 hours, and then roast at 550°C for 5 hours to obtain the deacidified carrier, and then grind it into a powder of less than 300 meshes. extrusion;
[0050] The above-mentioned deacidified support was mixed with CuCl 2 Perform ion exchange loading to prepare CuY molecular sieve adsorbent semi-finished product (loading capacity is 5%);
[0051] The semi-finished CuY molecular sieve adsorbent was baked at 120° C. for 12 hours and calcined at 550° C. for 4 hours to obtain the CuY molecular sieve adsorbent of this example.
[0052] This embodiment also provides the CuY molecular sieve adsorbent prepared by the above prepar...
Embodiment 3
[0057] This embodiment provides a method for preparing a transition metal Y-type molecular sieve adsorbent, comprising the following steps:
[0058] Soak pseudo-boehmite powder in 0.8g / L NaOH solution at 70°C for 15h, then wash with distilled water until neutral, bake in an oven at 120°C for 12h, and then roast at 550°C for 5h to obtain deacidification treatment carrier, and then grind it into a powder of less than 300 meshes, extrude,
[0059] The above-mentioned deacidified carrier was mixed with CoCl 2 Carry out ion exchange loading to prepare CoY molecular sieve adsorbent semi-finished product (loading capacity is 5%);
[0060] The CoY molecular sieve adsorbent of this example was obtained by drying the semi-finished product of the CoY molecular sieve adsorbent at 120° C. for 12 hours and calcining at 550° C. for 4 hours.
[0061] This embodiment also provides the CoY molecular sieve adsorbent prepared by the above preparation method.
[0062] This implementation also p...
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