Aromatic hydrocarbon liquid phase alkylation method
A technology for liquid-phase alkyl and aromatic hydrocarbons of aromatic hydrocarbons, applied in chemical instruments and methods, organic chemistry, hydrocarbons, etc., can solve problems such as poor stability and easy deactivation of catalysts, so as to improve stability and reduce olefin content Effect
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Embodiment 1
[0012] According to the method disclosed in Chinese patent ZL200610117871.7, organosilicon-containing zeolite was prepared: 3.0 g of alumina was dissolved in 450 g of water, 16.0 g of sodium hydroxide was added to dissolve it, and then hexamethyleneimine 34.7 g was added while stirring. gram, and then add 60 grams of solid silicon oxide and 5.9 grams of dimethyldiethoxysilane. After the reaction mixture was stirred evenly, it was put into a stainless steel reaction kettle, and crystallized at 145° C. for 70 hours while stirring. After taking out, it is filtered, washed and dried.
[0013] Take 50 grams of dried above-mentioned organosilicon zeolite samples, mix them well with 20 grams of alumina, add 5 (weight)% nitric acid, knead them, extrude them into strips of φ1.6×2 mm, and roast them at 550°C for 6 hours , to prepare the required catalyst.
[0014]
Embodiment 2
[0016] 600 grams of 40% silica sol, 38.9 grams of sodium aluminate (42% alumina content), 70.6 grams of 25% tetraethylammonium hydroxide (TEAOH), 5.0 grams of diethylamine (DEA), 168.0 grams of tetraethyl bromide Ammonium chloride (TEABr), 16.0 grams of sodium hydroxide, 136.0 grams of 25% ammonium hydroxide and 925.1 grams of water were mixed, and stirred evenly at room temperature. Then, it was transferred to a stainless steel autoclave with a crystallization temperature of 140° C. and reacted for 96 hours. After the reaction, the crystalline product was filtered, washed with deionized water, and dried. According to X-ray powder diffraction analysis, it is zeolite beta with BEA structure.
[0017] Take the above 50 grams of dried zeolite beta powder sample, and prepare a strip-shaped catalyst according to the same method as [Example 1].
[0018]
Embodiment 3
[0020] UZM-8 zeolite was prepared according to the method disclosed in USP6756030 B1, and prepared into a strip catalyst according to the method of [Example 1].
[0021]
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