A preparation method of catalytic cracking metal passivator and metal passivator prepared by the method
A metal deactivator and catalytic cracking technology, which is applied in catalytic cracking, catalyst protection, chemical instruments and methods, etc., can solve the problems of complex process, time and energy consumption, poor product stability, etc., and achieve simple preparation process and economic benefits Significant, low-cost effects
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[0017] The first aspect of the present invention: provide a kind of preparation method of catalytic cracking metal deactivator, this method comprises: a, antimony trioxide, hydroxycarboxylic acid, boron-containing compound, bismuth-containing compound, pH adjuster and water are mixed, React for 30-60 minutes at a temperature of 20-90°C to obtain the first product, wherein the mass ratio of antimony trioxide, hydroxycarboxylic acid, boron-containing compound, bismuth-containing compound, pH regulator and water Is 1: (2-4): (0.5-1.2): (0.4-2): (0.6-1.2): (2-10); b, the oxidant is mixed with the first product obtained in step a, and the The catalytic cracking metal passivator is obtained by reacting in a closed container at a temperature of 100-150° C. for 1-2 hours, wherein the mass ratio of the oxidant to antimony trioxide is (0.4-1.1):1. It should be noted that, since the catalytic cracking metal passivator prepared by the method of the present invention is generally used in t...
Embodiment 1
[0028] Add 1.8kg diethanolamine, 6kg tartaric acid, 3kg antimony trioxide, 1.2kg bismuth oxide, 1.5kg boric acid and 30kg deionized water into the reaction kettle, stir at room temperature for 30 minutes, add 2kg 30% by mass of hydrogen peroxide dropwise, and finish adding Finally, the reaction kettle was sealed and heated to 100° C. for 1 hour, and then cooled out of the kettle to obtain a catalytic cracking metal passivator. The product was clear and transparent, and the pH value was 7.1.
Embodiment 2
[0030] Add 2.4kg ethanolamine, 8kg citric acid, 2kg antimony trioxide, 4kg bismuth hydroxide, 2.4kg boric acid and 4kg deionized water into the reaction kettle, raise the temperature to 90°C and stir for 30 minutes, then add 2.2kg benzyl peroxide dropwise Acyl, after the addition, the reaction vessel was closed and heated to 150°C for 1.5 hours, and then cooled out of the vessel to obtain a catalytic cracking metal passivator. The product was clear and transparent, with a pH value of 8.0.
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