A kind of loading system and method for treating styrene epoxidation reaction liquid
An epoxidation reaction, styrene technology, applied in organic chemistry and other directions, can solve problems such as poor safety, and achieve the effects of extended replacement cycle, mild treatment conditions, and long service life
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Embodiment 1
[0046] Preparation of catalyst quenching and peroxide-treated solid materials: catalyst quenching factor KF, content 1%; peroxide treatment factor N,N-dimethyldithiocarbamate, content 1%.
[0047] 1) Preparation of catalyst quench factor modified molecular sieve C / MCM-41
[0048] Take a certain amount of anhydrous sodium metasilicate 407g, disperse it in 2035mL deionized water, adjust pH=14 with ammonia water (25%) solution, stir the formed gel at room temperature for 1h, and then add 20% hexadecane 485 g of an aqueous solution of alkyl trimethyl ammonium bromide was prepared as a mother liquor, and the mother liquor was stirred at 80° C. for 1 h. Then add 2g of KF, put it into a stainless steel autoclave lined with tetrafluoroethylene, and carry out a hydrothermal synthesis reaction at 120 ° C. After 48 hours, take out the autoclave, and the obtained solid product is filtered, washed and dried, and protected in a nitrogen atmosphere. It was dried in an oven at 100 °C for 24 ...
Embodiment 2
[0052] Catalyst Quenching and Preparation of Peroxide Treated Solid Materials: Catalyst Quenching Factors
[0053] NaOH, content 2%; peroxide treatment factor cobalt acetate, content 2%.
[0054] 1) Preparation of catalyst quench factor modified molecular sieve C / MCM-41
[0055] Take a certain amount of silica 200g, disperse it in 1000mL deionized water, adjust pH=13 with ammonia water (25%) solution, stir the formed gel at room temperature for 1h, and then add 20% hexadecyl triacetate. 267 g of an aqueous solution of methylammonium chloride was prepared as a mother liquor, and the mother liquor was stirred at 50° C. for 1 h. Then 4g NaOH was added, and the hydrothermal synthesis reaction was carried out at 150 ° C in a stainless steel autoclave filled with tetrafluoroethylene. After 10 hours, the autoclave was taken out, and the obtained solid product was filtered, washed and dried, and protected in a nitrogen atmosphere. It was dried in an oven at 120 °C for 8 h under the ...
Embodiment 3
[0059] Catalyst Quenching and Preparation of Peroxide Treated Solid Materials: Catalyst Quenching Factors
[0060] KOH, content 5%; peroxide treatment factor chromium acetate, content 10%.
[0061] 1) Preparation of catalyst quench factor modified molecular sieve C / MCM-41
[0062] Take a certain amount of sodium silicate 950g, disperse it in 4750mL deionized water, adjust pH=10 with ammonia water (25%) solution, stir the formed gel at room temperature for 1h, and then add 20% octadecyl trisulfate. 58 g of an aqueous solution of methylammonium chloride was prepared as a mother liquor, and the mother liquor was stirred at 40° C. for 5 h. Then add 10g KOH, put it into a stainless steel autoclave lined with tetrafluoroethylene, and carry out hydrothermal synthesis reaction at 200 ° C. After 4 hours, take out the autoclave, and the obtained solid product is filtered, washed and dried, and protected in a nitrogen atmosphere. It was dried in an oven at 150 °C for 4 h under the same...
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