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Alkane isomerization catalyst carrier, carrier preparation method and catalyst obtained by carrier preparation method

A catalyst carrier, alkane isomerization technology, used in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as unfriendly isomerization conversion rate, achieve high isomerization activity and selectivity, Good catalytic stability

Active Publication Date: 2021-01-29
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The main purpose of the present invention is to provide a carrier for the alkane isomerization catalyst, a method for preparing the carrier and the catalyst obtained therefrom, so as to overcome the defects that the alkane isomerization catalyst in the prior art is not environmentally friendly or the isomerization conversion rate is low

Method used

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  • Alkane isomerization catalyst carrier, carrier preparation method and catalyst obtained by carrier preparation method
  • Alkane isomerization catalyst carrier, carrier preparation method and catalyst obtained by carrier preparation method
  • Alkane isomerization catalyst carrier, carrier preparation method and catalyst obtained by carrier preparation method

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preparation example Construction

[0026] The invention provides a catalyst carrier for alkane isomerization. The catalyst carrier includes ordered mesoporous material MCM-41, tetragonal nano-zirconia, tungsten oxide and molybdenum oxide. The preparation method of the catalyst carrier includes the following steps:

[0027] Step 1, mixing ordered mesoporous material MCM-41 with tetragonal nano-zirconia at a mass ratio of 0.1 to 10:1 to obtain a composite carrier;

[0028] Step 2, respectively preparing an impregnating liquid containing a tungsten compound and an impregnating liquid containing a molybdenum compound, so that the composite carrier obtained in step 1 is respectively impregnated with the impregnating liquid containing a tungsten compound and the impregnating liquid containing a molybdenum compound;

[0029] Step 3, drying, roasting, and extruding to obtain an alkane isomerization catalyst carrier; taking the total mass of the catalyst carrier as 100%, the content of tungsten in the catalyst carrier is...

Embodiment 1

[0045] (1) Preparation of ordered mesoporous silica material MCM-41 and nano-zirconia mixed support

[0046] Dissolve cetyl trimethyl ammonium bromide in deionized water, add tetraethyl orthosilicate, add ammonia water, and crystallize at room temperature for 16 hours, wherein cetyl trimethyl sodium bromide: orthosilicate Tetraethyl ester: ammonia water=1:1:0.1 (molar ratio, wherein the molar amount of ammonia water is based on the ammonia therein). The precipitate was filtered, washed, dried for 24 hours, and then calcined in a muffle furnace at 550° C. for 4 hours to obtain an ordered mesoporous silica material MCM-41 carrier. Dissolve zirconium oxychloride (the concentration of zirconium is 0.5mol / L), add dilute ammonia water dropwise under vigorous stirring, adjust the pH of the system to 8-10, and stir for 1 hour; filter the precipitate and put it into a hydrothermal kettle at 150°C After the hydrothermal reaction, the product in the kettle is taken out, washed and filte...

Embodiment 2

[0080] (1) Preparation of ordered mesoporous silica material MCM-41 and nano-zirconia mixed support

[0081] Dissolve sodium dodecylbenzene sulfonate in deionized water, add tetraethyl orthosilicate, add ammonia water, and crystallize at room temperature for 10 hours, wherein sodium dodecylbenzene sulfonate: tetraethyl orthosilicate: Ammonia = 1:1:0.1 (molar ratio, wherein the molar amount of ammonia is based on the ammonia therein), filtered the precipitate, washed, dried for 24 hours, and then roasted in a muffle furnace at 550°C for 4 hours to obtain an ordered medium Porous silica material MCM-41 carrier. Dissolve zirconium oxychloride (the concentration of zirconium is 0.5mol / L), add dilute ammonia water dropwise under vigorous stirring, adjust the pH of the system to 8-10, and stir for 3 hours; filter the precipitate and put it into a hydrothermal kettle at 150°C After the hydrothermal reaction, the product in the kettle is taken out, washed and filtered until the filtr...

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Abstract

The invention relates to an alkane isomerization catalyst carrier, a carrier preparation method and an obtained catalyst. The catalyst carrier comprises an ordered mesoporous material MCM-41, tetragonal phase nano zirconia, tungsten oxide and molybdenum oxide, the mass ratio of the ordered mesoporous material MCM-41 to the tetragonal phase nano zirconia is 0.1-10:1, and the total mass of the catalyst carrier is 100%, the content of tungsten oxide in terms of tungsten is 0.5-8% by mass, and the content of molybdenum oxide in terms of molybdenum is 0.5-8% by mass. The catalyst prepared by the method can achieve high isomerization activity and selectivity at low reaction temperature, and meanwhile, the catalyst prepared by the method can be repeatedly utilized and has good catalytic stability.

Description

technical field [0001] The invention relates to a carrier using an alkane isomerization catalyst, a method for preparing the carrier and the obtained catalyst. Background technique [0002] There is a huge demand for motor gasoline in my country, especially high-octane gasoline components. Gasoline quality upgrade is urgent. There is a need for increased sulfur-free, olefin-free and high-octane blending components. Gasoline quality upgrades require sulfur reduction, olefin reduction, and octane maintenance. Single gasoline hydrogenation cannot take into account the two goals of maintaining octane number and sulfur reduction. Isomerized gasoline is basically sulfur-free, olefin-free, with high octane number and low octane number sensitivity, and is an ideal gasoline blending component. The isomerization of C5 and C6 alkanes is an important means to improve the quality of gasoline. Since isomerized oil is an environmentally friendly product with low sulfur, no aromatics an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01J29/04B01J35/10B01J37/02B01J37/03B01J37/10B01J37/08C10G45/64
CPCB01J29/0341B01J29/045B01J37/0201B01J37/03B01J37/10B01J37/082C10G45/64B01J2229/18B01J35/647B01J35/615Y02P20/52
Inventor 韩晓琳李金潘晖华胡长禄崔佳龚奇菡吕雉李知春张鹏张上桂鹏
Owner PETROCHINA CO LTD
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