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Isomerization reaction method of straight-chain paraffin

A technology for straight-chain alkanes and isomerization, which is applied in the field of isomerization of alkanes, can solve the problems of no solid super acid, low equilibrium conversion rate, poor product selectivity, etc., and achieves small grain size and equilibrium conversion rate. The effect of high and low reaction temperature

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second type uses molecular sieve catalysts containing hydrogenation / dehydrogenation metal components. The reaction temperature of this type of isomerization reaction method is high. Because high temperature is not conducive to the skeletal isomerization reaction, the equilibrium conversion rate of the reaction is low and the product selectivity is poor.
[0012] The currently disclosed linear alkane isomerization method has not yet found that the solid superacid (loaded ClO) containing hydrogenation / dehydrogenation metal components of the present invention is adopted. 4 - metal oxides of acid radicals) as catalysts

Method used

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  • Isomerization reaction method of straight-chain paraffin
  • Isomerization reaction method of straight-chain paraffin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 illustrates Pt-ClO 4 - / ZrO 2 Catalyst and method for its preparation.

[0047] (1) 108.8gZrOCl 2 ·8H 2 O (Beijing Chemical Plant, analytically pure) was dissolved in 250ml deionized water, and after stirring until the solution was completely clear, it was made into ZrOCl with a concentration of 1.35 mol / liter. 2 solution. in ZrOCl 2 Add 25.0gH to the solution 2 NCONH 2 -Urea (Beijing Yili Fine Chemical Co., Ltd., analytically pure), stirred and dissolved, and the concentration of urea in the solution was 1.67 mol / liter.

[0048] (2) The above solution was poured into a 500ml autoclave, and the temperature was raised to 150° C. under vigorous stirring. At this time, the pH of the gel mother solution was 10.6. The mother liquor was aged at 150° C. under hydrothermal pressure, and the time of the aging process was 45 hours. After the aging, the mother liquor was left to stand for 5 hours, then the supernatant was poured off, and the lower precipitate w...

Embodiment 2

[0054] Example 2 illustrates Pt-ClO 4 - / Fe 3 o 4 Catalyst and method for its preparation.

[0055] Catalyst preparation operation step and analysis method of embodiment 2 are identical with embodiment 1, difference is, the metal compound used in step (1) is (FeCl 3 9H 2(0); the concentration of ammonium perchlorate solution described in the soaking liquid in step (4) is 0.8 mol / liter; in step (5), 0.063gH 2 [PtCl 6 ] Chloroplatinic acid was dissolved in 30ml deionized water to make an impregnation solution; the obtained Pt-ClO 4 - / Fe 3 o 4 Catalyst, recorded as C-2. Its physical and chemical properties are shown in Table 1.

Embodiment 3

[0057] Example 3 illustrates Pt-ClO 4 - / CrO 2 Catalyst and method for its preparation.

[0058] Catalyst preparation operation step and analysis method of embodiment 3 are identical with embodiment 1, difference is, metal compound used in step (1) is 40gCrCl 3 9H 2 O; The concentration of the ammonium perchlorate solution described in the soaking liquid in the step (4) is 2.5 mol / liter. Obtained Pt-ClO 4 - / CrO 2 Catalyst, recorded as C-3. Its physical and chemical properties are shown in Table 1.

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Abstract

An isomerization reaction method of straight-chain paraffin. A straight-chain paraffin raw material is introduced into a reactor in the presence of hydrogen to contact with an isomerization catalyst, so as to generate branched alkane under isomerization reaction conditions. The method is characterized in that the isomerization catalyst is a solid super acid loaded with a hydrogenation / dehydrogenation metal component; the solid superacid acid is a metal oxide supported with ClO<4-> acid radicals; and the hydrogenation / dehydrogenation metal component is one or more selected from Pt, Pd and Ni. The isomerization reaction method of straight-chain paraffin provided by the invention has the characteristics of low reaction temperature, high conversion rate and good selectivity.

Description

technical field [0001] The invention relates to an isomerization reaction method of alkanes, more specifically, relates to a method for isomerization reaction of linear alkanes using a solid superacid bifunctional catalyst loaded with hydrogenation / dehydrogenation metal components. Background technique [0002] The isomerization reaction process of linear alkanes is an important process in the petroleum refining industry. Within the distillation range of gasoline, the octane number of straight-chain alkanes is very low and cannot be used as an effective blending component of gasoline. The branched-chain alkanes obtained by skeletal isomerization of straight-chain alkanes have high octane numbers and are new formulation gasoline. an important blending component. In addition, isobutane, the product of n-butane isomerization reaction, is one of the main raw materials for the alkylation process. [0003] The current method of isomerization of linear alkanes generally uses a so...

Claims

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Application Information

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IPC IPC(8): C10G45/60C10G45/62C07C5/27C07C9/16C07C9/18B01J27/138B01J27/135B01J27/13B01J27/132
Inventor 何奕工满征
Owner CHINA PETROLEUM & CHEM CORP
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