Catalyst for the preparation of 1,4-diacetoxybutane from butadiene
A technology of diacetoxybutane and catalyst, applied in physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, preparation of carboxylate, etc., can solve the problem of 1,4-diacetoxybutane Problems with low yield and selectivity of butane and high yield of 1,4-diacetoxybutane
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Embodiment 1
[0043] Preparation of hydrogenation catalyst:
[0044] ① Ammonium chloroplatinite containing 2.05gPt ((NH 4 ) 2 PtCl 4 ) is dissolved in the hydrochloric acid aqueous solution that concentration is 8wt%, obtains impregnation solution 200ml, and 1L diameter 3mm, length 2cm, pore volume are 0.80cm 3 / g, the specific surface area is 1200cm 2 The coal-based cylindrical activated carbon carrier of / g is impregnated in the above-mentioned impregnating liquid, obtains catalyst precursor I;
[0045] ② Standing and aging for 24 hours to obtain catalyst precursor II;
[0046] ③ with a concentration of 8% (in N 2 h 4 ·H 2 The 500ml hydrazine hydrate of (2 weight ratio) reduces catalyst precursor II for 3h, obtains catalyst precursor III;
[0047] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;
[0048] ⑤Scandium acetate (Sc(OAc) containing 1.92g Sc 3 ·6H 2 O) 180ml of aqueous solution was impregnated on the catalyst precursor ...
Embodiment 2
[0054] Preparation of hydrogenation catalyst:
[0055] ① Ammonium chloroplatinite containing 2.05gPt ((NH 4 ) 2 PtCl 4 ) is dissolved in the hydrochloric acid aqueous solution that concentration is 8wt%, obtains impregnation solution 200ml, and 1L diameter 3mm, length 2cm, pore volume are 0.80cm 3 / g, the specific surface area is 1200cm 2 The coal-based cylindrical activated carbon carrier of / g is impregnated in the above-mentioned impregnating liquid, obtains catalyst precursor I;
[0056] ② Standing and aging for 24 hours to obtain catalyst precursor II;
[0057] ③ with a concentration of 8% (in N 2 h 4 ·H 2 The 500ml hydrazine hydrate of (2 weight ratio) reduces catalyst precursor II for 3h, obtains catalyst precursor III;
[0058] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;
[0059] ⑤ impregnating 180 ml of an aqueous solution of lithium acetate (LiOAc) containing 1.92 g Li on the catalyst precursor IV, and d...
Embodiment 3
[0089] Preparation of hydrogenation catalyst:
[0090] ① Ammonium chloroplatinite containing 2.05gPt ((NH 4 ) 2 PtCl 4 ) is dissolved in the hydrochloric acid aqueous solution that concentration is 8wt%, obtains impregnation solution 200ml, and 1L diameter 3mm, length 2cm, pore volume are 0.80cm 3 / g, the specific surface area is 1200cm 2 The coal-based cylindrical activated carbon carrier of / g is impregnated in the above-mentioned impregnating liquid, obtains catalyst precursor I;
[0091] ② Standing and aging for 24 hours to obtain catalyst precursor II;
[0092] ③ with a concentration of 8% (in N 2 h 4 ·H 2 The 500ml hydrazine hydrate of (2 weight ratio) reduces catalyst precursor II for 3h, obtains catalyst precursor III;
[0093] ④ washed with water to no chloride ion, dried at 50°C for 4 hours to obtain catalyst precursor IV;
[0094] ⑤The yttrium acetate (Y(OAc) containing 1.92g Y 3 4H 2 180ml of aqueous solution of O) was impregnated on the catalyst precurs...
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