Self-alkylation reaction process of isomerized alkane
A technology of alkylation reaction and isoparaffin, applied in refined hydrocarbon oil, petroleum industry, etc., can solve the problems of environmental pollution and operation safety, and achieve the effect of high octane number and accurate feed amount
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[0014] In the method provided by the invention, said strong electronegative element is preferably a halogen, and said organic or inorganic compound containing strong electronegative element is preferably hydrogen halide or an inorganic compound that can be decomposed into hydrogen halide under alkylation conditions. or organic compounds. In general, all inorganic or organic compounds that can be decomposed into hydrogen halides under alkylation conditions can be used in the present invention, but preferred inorganic compounds are hydrogen halides such as HF, HCl, HBr and HI, more preferably HF or HCl; preferred organic compounds are halogen-containing organic compounds having 2 to 8 carbon atoms. The organic or inorganic compound containing strongly electronegative elements may also be a mixture of two or more of the above compounds.
[0015] The organic compound mentioned in the method provided by the present invention includes, but not limited to, mono- or dihalogenated alk...
Embodiment 1
[0029] The self-alkylation reaction of isobutane is carried out according to the method provided by the present invention.
[0030] 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 20-40 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 the supported heteropolyacid catalyst of 80% by weight silica gel, denoted as 20%H 3 PW 12 o 40 / SiO 2 , the specific surface of the catalyst is 380m 2 / g. The specific surface area of the catalyst was determined by low-temperature nitrogen adsorption BET method. Acid strength H o <-13....
Embodiment 2
[0040] 2000ppm of HF was added to the isobutane from the alkylation reaction raw material shown in Example 1 as a reaction aid. The catalyst, reaction conditions and process for carrying out the self-alkylation 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.
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