Catalytic dewaxing catalyst and its preparation thereof
A catalytic dewaxing and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low liquid yield and poor activity, and achieve the reduction of pour point and cloud point, dewaxing selection sex enhancing effect
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Embodiment 1
[0029] Describe the catalyst provided by the invention and its preparation method.
[0030] With 60 grams (dry basis weight) ZSM-5 molecular sieve (Changling Oil Refinery Catalyst Factory product, average grain size is about 80 nanometers, the mol ratio of silicon oxide and aluminum oxide is 32) and 189.2 grams of alumina powder (Changling Refinery catalyst factory products, dry basis 74% by weight) mixed, then extruded into cylindrical bars of Φ1.4 mm, wet bars were dried in air at 120°C for 4 hours, and roasted at 560°C for 4 hours to make catalyst carrier Z1.
[0031] Get 150 grams of carrier Z1, contact it with a mixed medium containing an aqueous solution of 1.0% by weight of tri-n-butylamine and air at 450°C for 8 hours, the ratio of the aqueous solution to the carrier is 1.0 g / g·hour, and the ratio of the air to the carrier is 1.0 L / g·hour. The contact is carried out in a 150 ml catalyst activation device, wherein the aqueous solution containing 1.0% by weight of tri-n...
Embodiment 2
[0034] Describe the catalyst provided by the invention and its preparation method.
[0035] With 150 grams (dry basis weight) ZSM-5 molecular sieve (Changling Oil Refinery Catalyst Factory product, average grain size is about 90 nanometers, the mol ratio of silicon oxide and aluminum oxide is 118) and 64.1 grams of alumina powder (Changling Refinery catalyst factory products, dry basis 78% by weight) mixed, then extruded into cylindrical bars of Φ1.4 mm, wet bars were dried in air at 120 ° for 4 hours, and roasted at 500 ° C for 6 hours to make catalyst carrier Z2.
[0036] Get 150 grams of carrier Z2, and contact it with a mixed medium containing an aqueous solution of 2.5% by weight of tetraethylammonium hydroxide and air at 480°C for 4 hours, the ratio of the aqueous solution to the carrier is 0.5 g / g·hour, and the ratio of the air to the carrier The ratio is 2.0 liters / gram·hour.
[0037] Get 98.8 grams of treated carrier Z2, use nickel nitrate [Ni(NO 3 ) 2 ·6H 2 0] im...
Embodiment 3
[0039] This example illustrates the preparation of the catalyst provided by the invention.
[0040] With 120 grams (dry basis weight) ZSM-5 molecular sieve (Changling Oil Refinery Catalyst Factory product, average grain size is about 55 nanometers, the mol ratio of silicon oxide and aluminum oxide is 84) and 108.1 grams of alumina powder (Changling Refinery catalyst factory product, dry basis 74% by weight) mixed, then extruded into a cylindrical bar with a diameter of 1.4 mm, the wet bar was dried in air at 120° for 4 hours, and roasted at 580° C. for 3 hours to make catalyst carrier Z3.
[0041] Take 120 grams of carrier Z3, treat it with an aqueous solution containing 3.2% by weight of triethylamine and air at 520°C for 2 hours, the ratio of the aqueous solution to the carrier is 2.5 g / g·hour, and the ratio of air to the carrier is 3.2 liters / gram·hour .
[0042] Get 96.5 grams of treated carrier Z3, and use nickel nitrate [Ni(NO 3 ) 2 ·6H 2 O] impregnated with 62 milli...
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Abstract
Description
Claims
Application Information
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