Alkane-hygrogenating isomerization reaction process
A technology of hydroisomerization and hydroisomerization, which is applied in the field of alkane hydroisomerization reaction, can solve the problems not involved in isomerization reaction, etc., and achieve good isoparaffin selectivity and high reaction equilibrium conversion rate effect
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Embodiment 1
[0030] The hydroisomerization reaction of n-pentane and hydrogen is carried out according to the method provided by the invention.
[0031] Weigh 5.24g phosphotungstic acid (H 3 PW 12 o 40 .22H 2 O, analytically pure, produced by Beijing Chemical Plant) was dissolved in 35ml of deionized water and made into H 3 PW 12 o 40 aqueous solution. 18.5g particle size is 40-60 purpose silica gel (SiO 2 , produced by Qingdao Ocean Chemical Factory) into a suction filter bottle, treated at 0.095 MPa vacuum and 75°C for 1.0 hour, cooled to room temperature, and added the prepared H 3 PW 12 o 40 solution, impregnated for 1.0 h, and then vacuum-dried at 100 °C for 4 h to obtain 3 PW 12 o 40 and 80 wt% SiO 2 The supported heteropolyacid catalyst, denoted as 20%H 3 PW 12 o 40 / SiO 2 , the specific surface area of the catalyst is 380m 2 / g. The specific surface area of the catalyst was determined by low-temperature nitrogen adsorption BET method. The preparation method ...
Embodiment 2
[0049] Add 2000ppm HF in n-pentane as a reaction aid. The catalyst and process for carrying out the hydroisomerization reaction are the same as in Example 1, the reaction conditions are shown in Table 2, and the reaction results are listed in Table 2.
[0050] Table 2.
[0051] Reaction additive ppm
2000 0
Reaction conversion weight %
77.6 68.1
Selectivity wt% of isopentane
98.2 96.7
Yield weight % of isopentane
76.2 65.8
[0052] Reaction conditions: temperature: 140°C; pressure: 2.0MPa; H 2 / alkane: 1.02 (molar ratio);
[0053] Response time: 90 minutes
Embodiment 3
[0055] 500ppm organic fluoride-fluorobutane was added to the reaction raw material n-pentane as a reaction aid. The catalyst, reaction conditions and process for carrying out the hydroisomerization reaction are the same as in Example 1, and the reaction results are listed in Table 3.
[0056] table 3.
[0057] Reaction additive ppm
500 0
Reaction conversion weight %
75.2 68.1
Selectivity wt% of isopentane
98.2 96.7
Yield weight % of isopentane
738 65.8
[0058] Reaction conditions: temperature: 140°C; pressure: 5.0Mpa; H 2 / alkane: 2.52;
[0059] Response time: 60 minutes
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