Alkylaryl sulfonate and its preparation method and uses
An aryl alkyl sulfonate and aryl technology, which can be used in the preparation of sulfonates, chemical instruments and methods, drilling compositions, etc., and can solve the problems of high solubilization ability, low interfacial tension, and poor salt resistance.
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Embodiment 1
[0040] Take an olefin with an average carbon number of 12 and a carbon number distribution of not more than 3 carbon atoms at a molar ratio of 1:0.3:10 to anhydrous aluminum trichloride and benzene in a constant pressure dropping funnel, and dropwise Drop into the mixture of anhydrous aluminum trichloride powder and benzene, and control the reaction temperature at about 5-30°C. Stir overnight after addition. Pour the reaction mixture into crushed ice, let it stand for liquid separation, and use 10-20% Na for the oil phase 2 CO 3 The solution was washed to neutrality, and then washed with water 2 to 3 times. The oil phase was dried with anhydrous calcium chloride, filtered and distilled under reduced pressure, and the fraction at about 138°C (2mmHg) was collected.
[0041] Take a certain amount of synthesized dodecylbenzene in a three-necked flask, add 2-10 drops of pyridine dropwise, and adjust the distance between the ultraviolet lamp and the reactor to be 10-20 cm. Sulfo...
Embodiment 2
[0051] In Example 1, the average number of carbon atoms is twelve and the distribution of carbon atoms is no more than 3 carbon atoms, and the average number of carbon atoms is eighteen and the distribution of carbon atoms is no more than 3 carbon atoms. Other The conditions and operating method were the same as in Example 1 to obtain product 2# product benzene-substituted octadecylsulfonate. Add different concentrations of NaCl to the 2# product, the product concentration is 3000ppm, and the interfacial tension properties between crude oil in Shengli Oilfield, China image 3 . Add different concentrations of Ca to the 2# product 2+ , the NaCl concentration is 3.5%, Na 2 CO 3 The concentration is 0.1%, and the product concentration is 3000ppm. See Figure 4 .
Embodiment 3
[0053] In Example 1, the average number of carbon atoms is twelve and the distribution of carbon atoms is no more than 3 carbon atoms, and the average number of carbon atoms is fourteen and the distribution of carbon atoms is no more than 3 carbon atoms. Change to toluene, other conditions and operation method are identical with embodiment 1, obtain the tetradecyl sulfonate that product 3# product toluene replaces. Add different concentrations of NaCl to the 3# product, the product concentration is 3000ppm, and the interfacial tension properties between crude oil in Shengli Oilfield, China image 3 . Add different concentrations of Ca to the 3# product 2+ , the NaCl concentration is 3.5%, Na 2 CO 3 The concentration is 0.1%, and the product concentration is 3000ppm. See Figure 4 .
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