Preparation method of alkane isomerization catalysts

A technology of alkane isomerization and catalyst, which is applied in the direction of catalyst activation/preparation, isomerization hydrocarbon production, physical/chemical process catalyst, etc. It can solve the problems of high operating cost, large equipment investment, and low investment in rectification and separation equipment , to achieve the effect of high acidity

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there are rectification and adsorption separation methods for separating n-paraffins and isoparaffins. Since the alkane fraction is relatively light and the boiling points between isomers are close, the investment in rectification and separation equipment is low, but the operating cost and energy consumption are high.
The adsorption separation method uses the shape-selective properties of molecular sieve channels to selectively adsorb n-alkanes, so that n-alkanes and iso-alkanes are separated. The device investment is large, but the operating cost is low

Method used

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  • Preparation method of alkane isomerization catalysts
  • Preparation method of alkane isomerization catalysts
  • Preparation method of alkane isomerization catalysts

Examples

Experimental program
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Effect test

example 1

[0030] (1) Preparation of alumina carrier

[0031] Take 100 grams of SB aluminum hydroxide powder (produced by Condea in Germany, with an alumina content of 85% by mass) and an appropriate amount of deionized water so that the liquid / solid mass ratio is 1:1.6, and stir. Add 2 mL of dilute nitric acid with a volume ratio of 1:1, extrude, dry at 120°C for 2 hours, and bake at 550°C for 4 hours to obtain a γ-alumina carrier.

[0032] (2) Impregnated loaded platinum

[0033] Impregnate the γ-alumina carrier prepared in step (1) with a mixture of chloroplatinic acid, hydrochloric acid and trichloroacetic acid prepared in a predetermined amount. The amount of platinum contained in the mixture should make the prepared catalyst reach the required The platinum content, the amount of hydrochloric acid and trichloroacetic acid are 1.2% and 5.0% relative to the mass of dry alumina, respectively, the liquid / solid ratio of impregnating liquid and carrier is 1.8, and the impregnating time i...

example 2

[0037] Catalyst is prepared according to the method of example 1, difference is (2) in the step, impregnating and carrying platinum, the solid after drying is at 560 ℃, H 2 Under the condition that the O / HCl molecular ratio is 50:1, the water chlorine treatment was carried out in the air for 6 hours, and catalyst B was obtained after reduction and chlorine supplementation, and its active component content is shown in Table 1.

example 3

[0039] The catalyst was prepared according to the method of Example 1, except that hydrochloric acid and trichloroacetic acid were not added to the impregnating solution for impregnating platinum in step (2). The active component content of the prepared catalyst C is shown in Table 1.

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Abstract

The invention discloses a preparation method of alkane isomerization catalysts. The preparation method comprises the following steps of dipping an aluminium oxide carrier by a solution containing a group VIII metal compound, drying the solid after dipping, roasting or carrying out water chlorination, then dipping by an alkane solution containing alkyl aluminum chloride, and then drying under the presence of inert gases and under an anhydrous condition so as to obtain the catalyst. By taking dry basis aluminium oxide as a reference, the calculated content of group VIII metal of the obtained catalyst is 0.01-3.0% by mass, and the chlorine content is 4.0-10.0% by mass. The catalyst prepared by the method is low in reaction temperature, and is high in activity of isomerization and selectivity.

Description

technical field [0001] The invention is a preparation method of an alkane isomerization catalyst, specifically, a C 5 / C 6 The preparation method of n-paraffin isomerization catalyst. Background technique [0002] With the increasingly stringent environmental protection requirements, the quality specifications of motor gasoline products are getting higher and higher. Catalytic gasoline accounts for about 80% of motor gasoline, and the rest is reformed gasoline, a small amount of naphtha and MTBE. The overall performance is that there are not enough high-octane components, insufficient production capacity of high-grade gasoline, and most gasoline sulfur content remains At 400 μg / g, the benzene content is about 2.0% by volume, and the benzene content of high-grade gasoline is even closer to the 2.5% by volume of the National II standard, and the olefin content in gasoline is relatively high. The main reason is that the sulfur content of catalytic gasoline is very high (sulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/13B01J32/00C07C9/14C07C5/27B01J23/42B01J37/22C10G45/62
Inventor 李振兴张秋平马爱增王京红
Owner CHINA PETROLEUM & CHEM CORP
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