50results about How to "Avoid agglomeration or even clogged pores" patented technology

The invention discloses a preparation method of catalyst carrier dry gel powder. The preparation method comprises the following steps of adding a mixture of a molecular sieve and an organic amine into amorphous silica-alumina in gelling, after gelling of the amorphous silica-alumina, carrying out aging, and then carrying out filtration, washing and drying to obtain the catalyst carrier dry gel powder. The preparation method realizes ordered arrangement and uniform deposition of silica-alumina on the surface of the molecular sieve, improves the binding strength of the molecular sieve and the silica-alumina, avoids agglomeration of the amorphous silica-alumina and the molecular sieve and channel blocking caused by the agglomeration, realizes mutual communication of channels of the silica-alumina and the molecular sieve, fully develops synergism of the silica-alumina and the molecular sieve, and improves catalyst use performances. The catalyst carrier dry gel powder can be used as an acidic component in a catalyst and is especially suitable for being used as a hydrocracking catalyst carrier.

The invention discloses a preparation method of a hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum. The method includes: preparing catalyst carrier material, introducing hydrogenation active components by impregnation method or co-precipitation method to obtain final hydrogenation catalyst, wherein the preparation process of carrier material is: adding molecular sieve and organic A mixture of amines, organic alcohols and / or organic acids, aged after the amorphous silica-alumina colloid is formed, then subjected to hydrothermal treatment, filtered, washed and dried to obtain a catalyst carrier material. The method of the present invention can arrange the silicon-alumina on the molecular sieve surface orderly and uniformly, and strengthen the bonding force between the molecular sieve and the silicon-aluminum, avoid the phenomenon of agglomeration or even blockage between the amorphous silicon-aluminum and the molecular sieve, and make the silicon The pores of the aluminum and the molecular sieve are connected to each other, so that the silica-alumina and the molecular sieve can fully play a synergistic effect and improve the performance of the catalyst. The catalyst prepared by the method of the invention can be used in various hydrogenation processes.

The invention discloses a preparation method of a hydrogenation catalyst composition. The method comprises the following steps: adding a mixture of molecular sieves and organic amines before or in the process of preparing an alumina-hydrogenation active metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then carrying out filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst composition. A catalyst prepared by the method can organically combine the molecular sieves and alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and amorphous alumina, simultaneously controlling the distribution of the hydrogenation components on various acidic components effectively and improving the usability of the catalyst. The hydrogenation catalyst composition prepared by the method is especially suitable for hydrogenation catalysts with relatively high requirements for acidity and relatively low requirements for hydrogenation properties.

The invention discloses a preparation method of a hydrogenation catalyst containing a molecular sieve and amorphous silica-alumina. The preparation method comprises the following steps of preparing a catalyst carrier material and introducing a hydrogenation active component by a dipping method or a coprecipitation method to obtain the hydrogenation catalyst. The preparation process of the catalyst carrier material comprises the followings steps of adding a mixture of a molecular sieve and an organic amine into amorphous silica-alumina in gelling, after gelling of the amorphous silica-alumina, carrying out aging, then carrying out hydrothermal treatment and then carrying out filtration, washing and drying to obtain the catalyst carrier material. The preparation method realizes ordered arrangement and uniform deposition of silica-alumina on the surface of the molecular sieve, improves the binding strength of the molecular sieve and the silica-alumina, avoids agglomeration of the amorphous silica-alumina and the molecular sieve and channel blocking caused by the agglomeration, realizes mutual communication of channels of the silica-alumina and the molecular sieve, fully develops synergism of the silica-alumina and the molecular sieve, and improves catalyst use performances. The hydrogenation catalyst can be used for various hydrogenation technologies.

The invention discloses a method for preparing a hydrogenation catalyst composition. The method comprises the following steps: adding a mixture of molecular sieves and organic amines before or in the process of preparing an amorphous silica-alumina-hydrogenation active metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then carrying out filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst composition. A catalyst prepared by the method can organically combine the molecular sieves and amorphous silica-alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and amorphous silica-alumina, simultaneously controlling the distribution of the hydrogenation components on various acidic components effectively and improving the usability of the catalyst. The hydrogenation catalyst composition prepared by the method is especially suitable for hydrogenation catalysts with relatively high requirements for acidity and relatively low requirements for hydrogenation properties.

The invention discloses a method for hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum. The method includes: adding a mixture of molecular sieves containing hydrogenation active metal components and organic amines, organic alcohols and / or organic acids during the gelation of amorphous silica-alumina, and aging after the gelation of amorphous silica-alumina is completed. , followed by hydrothermal treatment, filtration, washing, drying, molding, drying and roasting to obtain a hydrogenation catalyst. The method of the invention can organically combine the molecular sieve and the amorphous silica-alumina, has a good degree of combination and dispersion, can avoid agglomeration or even blockage between the molecular sieve and the amorphous silica-alumina, and can effectively adjust the hydrogenation function of the catalyst With cracking function, improve the performance of the catalyst. The catalyst prepared by the method of the invention is suitable for shallow cracking and deep hydrogenation processes.

The invention discloses a hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum. The composition of the hydrogenation catalyst includes: hydrogenation active metal components, molecular sieves and amorphous silica-alumina, wherein the hydrogenation active metal components are mainly supported on amorphous silica-alumina, amorphous silica-alumina wraps molecular sieves, hydrogenation active metal components In terms of oxides, it accounts for 3%~100% of the weight of amorphous silicon aluminum, and the weight ratio of molecular sieve to amorphous silicon aluminum is 1:19~19:1. The hydrogenation catalyst of the invention fully isolates the hydrogenation active metal from the acid center of the molecular sieve, adjusts the hydrogenation function and the acidic function, and is especially suitable for a hydrogenation catalyst with relatively high acidity requirements and relatively low hydrogenation performance requirements.