Preparation method of boron-modified alumina carrier

An alumina carrier and boron modification technology, applied in catalyst carriers, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of small specific surface area and pore volume of boron-containing alumina, uneven boron dispersion, etc. The preparation method is simple, the process is simple, and the cost is low.
CN102728335AActive Publication Date: 2012-10-17CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2012-10-17
Patent Text Reader

Abstract

The invention relates to a preparation method of a boron-modified alumina carrier. The method comprises the following steps of: firstly wetting an alumina precursor by the use of a low carbon alcoholic solution, adding a boron-containing solution formed by polyol and boric acid, and preparing the boron modified alumina carrier. By the adoption of the method, local supersaturation adsorption phenomenon caused by directly adding the boron-containing solution into the alumina precursor can be avoided, and the solution will not be over-absorbed into internal pores. Simultaneously, with the increase of the temperature during the kneading process, volatilization of low carbon alcohol and low surface tension help boron to uniformly disperse onto the surface of the alumina carrier. In addition, the method is beneficial to improving specific surface area and pore volume of the carrier. The boron modified alumina carrier provided by the invention is especially applicable to being used as a carrier for a hydrodenitrogenation catalyst.
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Description

Technical field

[0001] The invention relates to a preparation method of a boron-modified alumina carrier, which belongs to the field of inorganic material preparation. Background technique

[0002] Hydrorefining is an important means to remove sulfur, nitrogen, oxygen and other organic substances from oil products through catalytic hydrogenation. At present, an important aspect in the research of hydrorefining catalysts is to adopt a variety of methods to modify the alumina support used in the preparation of catalysts to obtain catalytic materials with good performance.

[0003] As a catalytic support material, alumina has a very wide range of applications in the field of hydrogenation. However, when alumina is used as a catalyst carrier, the acidity is weak, and it easily interacts with active metal components to form inactive species. Therefore, simply using alumina as a catalyst carrier is prone to sintering of the active metal components or the carrier, which affects the acti...

Claims

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