Preparation method of shape-selective isomerization catalyst based on FAU type structure molecular sieve
A molecular sieve and catalyst technology, applied in the field of the preparation of shape-selective isomerization catalysts, can solve the problems of catalyst activity and isomer selectivity reduction, etc., achieve high activity and isomer yield, reduce energy consumption, and shorten pore channels the effect of depth
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Embodiment 1
[0035] Put 20g of Y molecular sieve raw powder containing template agent in a quartz tube, bake at 250°C for 4 hours in an air atmosphere, and cool naturally to room temperature to obtain a Y molecular sieve carrier whose micropore channels are partially filled with carbon deposits. The carbon deposit content in the molecular sieve carrier is 12.3%, and the micropore volume is 0.016cm 3 / g. With 5.0mL containing Pt 0.001g / mL of H 2 PtCl 6 The solution impregnates 5 g of the above-mentioned molecular sieve carrier. The impregnated sample was dried at 120°C for 2h, and at 200°C, the hydrogen flow rate was controlled at 5mL / min / g 催化剂 , and reduced for 4h to obtain 0.5wt.% Pt / Y catalyst. The carbon content in the catalyst is 12.3%, and the micropore volume is 0.016cm 3 / g. The characterization results of catalyst carbon content and micropore volume are shown in Table 1, and the evaluation results of catalytic reaction are shown in Table 2.
Embodiment 2
[0037] Put 20g of Y molecular sieve raw powder containing template agent in a quartz tube, bake at 320°C for 4 hours in a nitrogen atmosphere, and cool naturally to room temperature to obtain a Y molecular sieve carrier whose micropore channels are partially filled with carbon deposits. The carbon deposit content in the molecular sieve carrier is 7.3%, and the micropore volume is 0.064cm 3 / g. With 5.0mL containing Pt 0.001g / mL of H 2 PtCl 6 The solution impregnates 5 g of the above-mentioned molecular sieve carrier. The impregnated sample was dried at 120°C for 2 hours, and at 300°C, the hydrogen flow rate was controlled at 20mL / min / g 催化剂 , and reduced for 4h to obtain 0.5wt.% Pt / Y catalyst. The carbon content in the catalyst is 7.3%, and the micropore volume is 0.064cm 3 / g. The characterization results of catalyst carbon content and micropore volume are shown in Table 1, and the evaluation results of catalytic reaction are shown in Table 2.
Embodiment 3
[0039] Put 20g of Y molecular sieve raw powder containing template agent in a quartz tube, bake at 400°C for 4 hours in an air atmosphere, and cool naturally to room temperature to obtain a Y molecular sieve carrier whose micropore channels are partially filled with carbon deposits. The carbon deposit content in the molecular sieve carrier 1.4%, the micropore volume is 0.183cm 3 / g. With 5.0mL containing Pt 0.001g / mL of H 2 PtCl 6 The solution impregnates 5 g of the above-mentioned molecular sieve carrier. The impregnated sample was dried at 120°C for 2 hours, and at 400°C, the hydrogen flow rate was controlled at 40mL / min / g 催化剂 , and reduced for 4h to obtain 0.5wt.% Pt / Y catalyst. The carbon content in the catalyst is 1.2%, and the micropore volume is 0.189cm 3 / g. The characterization results of catalyst carbon content and micropore volume are shown in Table 1, and the evaluation results of catalytic reaction are shown in Table 2.
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