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Selective hydrodesulfurization catalyst and its preparation method

A hydrodesulfurization and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of gasoline octane number decline, hydrogen consumption, etc. Achieve good desulfurization selectivity

Active Publication Date: 2011-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low degree of branching olefins are easily hydrogenated and saturated into low-octane alkanes during this process
This will not only greatly reduce the octane number of gasoline, but also cause a large amount of unnecessary hydrogen consumption

Method used

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  • Selective hydrodesulfurization catalyst and its preparation method

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preparation example Construction

[0019] According to the preparation method of the catalyst provided by the present invention, the introducing method selected from at least one metal component of Group VIB and at least one metal component of Group VIII can be any method known in the art, such as by introducing The method of impregnating the carrier after preparing an aqueous solution of the compound containing the metal components of Group VIII and Group VIB is introduced. Wherein, the at least one metal component selected from Group VIB and the at least one metal component selected from Group VIII can be introduced separately or simultaneously. In terms of oxides and based on the catalyst, the amount of the compound containing the VIII group metal component and the compound of the VIB group metal component makes in the final catalyst, the content of the VIB group metal component is 1- 20% by weight, preferably 3-15% by weight, more preferably 5-13% by weight, the content of Group VIII metal components is 0.5...

Embodiment 1

[0028] Weigh 100 g of silica (product of Qingdao Haiyang Chemical Special Silica Gel Co., Ltd., specific surface area 387 m2 / g, pore volume 0.99 ml / g), which is called carrier Z1.

[0029] Molybdenum and cobalt were introduced into the carrier Z1 by co-impregnation. First, weigh 11.2 grams of ammonium molybdate, weigh 11.1 grams of cobalt nitrate, dissolve it into 120 ml of solution with 16% by weight NH3 aqueous solution, impregnate 100 grams of carrier Z with this solution for 14 hours, dry at 120°C for 4 hours, and roast at 420°C 4 hours; Catalyst C1 is obtained. The contents of cobalt and molybdenum oxides in C1 are listed in Table 1.

Embodiment 2

[0031] Weigh 100 g of silica (Qingdao Ocean Chemical Special Silica Gel Co., Ltd. product, specific surface area 284m2 / g, pore volume 0.73ml / g) pellets, which are called carrier Z2.

[0032] Molybdenum and cobalt are introduced into the carrier Z2 by means of co-impregnation. First, weigh 8.1 grams of ammonium molybdate, weigh 8 grams of cobalt nitrate, dissolve it with 16% by weight NH3 aqueous solution to form 89 milliliters of solution, impregnate 100 grams of carrier Z with this solution for 24 hours, dry at 120°C for 4 hours, and roast at 420°C 4 hours; Catalyst C2 is obtained. The contents of cobalt and molybdenum oxides in C2 are listed in Table 1.

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Abstract

The invention discloses a selective hydrodesulphurization catalyst as well as the preparation method thereof. The catalyst contains a carrier, at least one VIB group hydrogenation active metal component and at least one VIII group hydrogenation active metal component, if oxide is measured, and the catalyst is taken as the reference, the content of the VIB group metal component is 1 to 20 percent by weight, the content of the VIII group metal component is 0.5 to 8 percent by weight, and the content of the carrier is 72 to 98.5 percent by weight, wherein, the carrier contains silicon oxide, if the carrier is taken as the reference, the content of the silicon oxide is 15 percent by weight to 100 percent by weight. Compared with the prior catalyst, the catalyst provided by the invention has better desulphurization selectivity.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, more specifically to a selective hydrodesulfurization catalyst and a preparation method thereof. Background technique [0002] As we all know, air pollution brings serious environmental problems. Excessive engine emissions are one of the main causes of air pollution. In recent years, in order to meet the requirements of protecting the environment, countries around the world have put forward stricter restrictions on the composition of engine fuel in order to reduce the emission of harmful substances. SOx, the combustion product of sulfide in gasoline, is one of the main harmful substances, and it is also one of the main substances that poison the catalyst of the catalytic converter of automobile exhaust gas. Therefore, the further desulfurization of gasoline has become a subject of current refinery technology progress. [0003] In general, sulfur contained in gasoline...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882C10G45/08
Inventor 李明丰褚阳姜锋高晓冬李会峰屈锦华夏国富聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP