Method for isomerizing butene-2 into butene-1
A butene and isomerization technology, applied in the direction of isomerization of hydrocarbons, chemical instruments and methods, organic chemistry, etc., can solve the problems of high reaction temperature and low catalyst activity, so as to reduce the reaction temperature, help reduce energy consumption, The effect of good technical effects
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Embodiment 1
[0029] According to 1Al 2 o 3 :20SiO2 2 :0.02Na 2 O:5R:2000H 2 The molar ratio of O, sodium silicate, aluminum nitrate, ethylenediamine, and sodium hydroxide were added to deionized water respectively, and the pH value was adjusted to 10-13 by sulfuric acid, stirred for 2 hours, and the resulting gel was placed in an autoclave at After crystallization at 170°C for 68 hours, take it out, filter, wash until neutral, and dry to obtain the raw molecular sieve powder, which is ZSM-35 molecular sieve through XRD detection. see results figure 1 , SEM photo see figure 2 .
[0030] The raw molecular sieve powder is sodium type, and ammonium exchange is carried out according to the known technology, 0.5 mol / liter ammonium nitrate solution, 80 ° C for 2 hours, and exchanged three times. After drying, it was calcined at 550°C for 6 hours to obtain hydrogen ZSM-35 molecular sieve. The finished catalyst product A is obtained.
[0031] The prepared catalysts were evaluated on a 10m...
Embodiment 2
[0033] According to 1Al 2 o 3 :25SiO2 2 :0.1Na 2 O:6.3R:2500H 2 The molar ratio of O, sodium silicate, aluminum nitrate, ethylenediamine, and sodium hydroxide were added to deionized water respectively, the pH value was adjusted to 10-13 by sulfuric acid, stirred for 2 hours, and the resulting gel was placed in an autoclave Crystallize at 150°C for 5 days, take it out, filter, wash until neutral, and dry to obtain the raw molecular sieve powder, which is ZSM-35 molecular sieve through XRD detection.
[0034] The raw molecular sieve powder is sodium type, and ammonium exchange is carried out according to the known technology, 0.5 mol / liter ammonium nitrate solution, 80 ° C for 2 hours, and exchanged three times. After drying, it was calcined at 550°C for 6 hours to obtain hydrogen ZSM-35 molecular sieve. The finished catalyst product B is obtained.
[0035] Carry out catalyst B evaluation by [embodiment 1], the result is listed in table 2.
Embodiment 3
[0037] According to 1Al 2 o 3 :30SiO2 2 :0.2K 2 O:6.3R:2500H 2 The molar ratio of O is to add sodium silicate, aluminum nitrate, ethylenediamine and potassium hydroxide to deionized water respectively, adjust the pH value to 10-13 by sulfuric acid, stir for 2 hours, and put the resulting gel in an autoclave Crystallize at 200°C for 6 days, take it out, filter, wash until neutral, and dry to obtain the raw molecular sieve powder, which is ZSM-35 molecular sieve through XRD detection.
[0038] The raw molecular sieve powder is sodium type, and ammonium exchange is carried out according to the known technology, 0.5 mol / liter ammonium nitrate solution, 80 ° C for 2 hours, and exchanged three times. After drying, it was calcined at 550°C for 6 hours to obtain hydrogen ZSM-35 molecular sieve. That is, the finished catalyst product C is obtained.
[0039] Carry out catalyst C evaluation by [embodiment 1], the result is listed in table 2.
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