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Catalyst with hydrocarbon dehydrogenation catalysis function, preparation method and application of catalyst and hydrocarbon dehydrogenation reaction method

A catalyst and dehydrogenation technology, which is applied in the field of hydrocarbon dehydrogenation reaction, can solve the problem of low CNT loading, and achieve the effect of high crushing strength and high porosity

Active Publication Date: 2018-02-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although CNTs can be well anchored on the surface of SiC foam, the loading of CNTs is low, usually only up to 0.5-4 wt%.

Method used

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  • Catalyst with hydrocarbon dehydrogenation catalysis function, preparation method and application of catalyst and hydrocarbon dehydrogenation reaction method
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  • Catalyst with hydrocarbon dehydrogenation catalysis function, preparation method and application of catalyst and hydrocarbon dehydrogenation reaction method

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preparation example Construction

[0032] According to the preparation method of the present invention, the aqueous dispersion contains a basic oxide source, at least one metal oxide source, and optionally at least one treatment agent.

[0033] The base oxide source is selected from silicon oxide, aluminum oxide, titanium oxide, silicon oxide precursors, aluminum oxide precursors, and titanium oxide precursors.

[0034] The basic oxide source may be provided in various common forms, as long as the basic oxide can be introduced into the final prepared catalyst, for example, the basic oxide source may be an oxide and / or a precursor. The oxide may be provided in the form of a sol, such as one or more of silica sol, titanium sol, and aluminum sol. The precursor can be selected according to the expected type of basic oxide.

[0035] For example, the precursor of alumina may be a substance that can be transformed into alumina, such as a substance that can form alumina through a hydrolysis condensation reaction and / or calci...

Embodiment 1-17

[0129] The following method was used to prepare the catalyst according to the conditions given in Table 2:

[0130] The nanocarbon material as the raw material is mixed with the basic oxide source and optional additives, and then the obtained mixture is placed in a sealed autoclave lined with polytetrafluoroethylene, and subjected to hydrothermal treatment under autogenous pressure . After the temperature in the autoclave is lowered to ambient temperature, open the reactor and send the obtained slurry into a strip mold for drying and optional roasting to obtain a molded body (part of the molded body is randomly selected for polishing to obtain the length The 3-5mm sample is used to determine the crushing strength and porosity, the results are listed in Table 2), the remaining molded body is crushed and then sieved to obtain the granular catalyst, its average particle size (referred to as particle size) Listed in Table 2.

Embodiment 18

[0132] The difference from Example 1 is that after mixing the nano carbon material and the crystallization mother liquor at ambient temperature (25° C.), the mixture is directly fed into the mold.

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Abstract

The invention relates to a catalyst with a hydrocarbon dehydrogenation catalysis function, a preparation method and an application of the catalyst and a hydrocarbon dehydrogenation reaction method anddiscloses the catalyst with the hydrocarbon dehydrogenation catalysis function. The catalyst contains a nanocarbon material and inorganic oxide, wherein at least part of inorganic oxide covers at least part of the surface of the nanocarbon material, the inorganic oxide contains at least one basic oxide and at least one metal oxide, the basic oxide is selected from silicon oxide, aluminum oxide and titanium oxide, and metal elements in the metal oxide are selected from group IA metal elements, group IIA metal elements and transition metal elements. The catalyst has higher crushing strength andhigher porosity and is suitable for being used as a catalyst, particularly a catalyst for a hydrocarbon dehydrogenation reaction.

Description

Technical field [0001] The present invention relates to a catalyst for the catalytic reaction of hydrocarbon dehydrogenation, and a preparation method and application thereof. The present invention also relates to a method of hydrocarbon dehydrogenation reaction. Background technique [0002] The dehydrogenation reaction of hydrocarbons is an important type of reaction. For example, most of the low-carbon olefins are obtained through the dehydrogenation reaction of low-carbon alkanes. Dehydrogenation reactions can be divided into direct dehydrogenation reactions (that is, oxygen does not participate) and oxidative dehydrogenation reactions (that is, oxygen participates) according to whether oxygen is involved. [0003] Various types of nano-carbon materials have been proven to have catalytic effects on both the direct dehydrogenation reaction and the oxidative dehydrogenation reaction of hydrocarbons. [0004] For the hydrocarbon oxidative dehydrogenation process using nano-carbon m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/89B01J29/76B01J31/28B01J23/42B01J23/44B01J23/46B01J23/745B01J23/75C07C5/333C07C11/08
CPCB01J23/42B01J23/44B01J23/464B01J23/745B01J23/75B01J29/76B01J29/7615B01J29/89B01J31/28C07C5/3332C07C11/08
Inventor 史春风荣峻峰于鹏
Owner CHINA PETROLEUM & CHEM CORP
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