US 10,307,735 B2 · Gd-containing, anti-coking solid acid catalysts and preparation method and use thereof

Abstract

The present invention relates to an anti-coking catalyst having a physical property of reducing coke formation, which comprises a solid acid catalyst containing gadolinium (Gd) on the surface, a preparation method thereof, and a use thereof. The preparation method includes a first step of determining the amount of gadolinium (Gd) or a Gd-providing precursor to be used relative to the total weight of the solid acid catalyst, which reducing the coking of a specific solid acid catalyst below a specific level under a specific reaction condition; and a second step of preparing a Gd-containing solid acid catalyst using the amount determined in the first step. The catalyst according to the present invention is a catalyst in which an appropriate weight ratio of gadolinium is supported on the surface of a pure solid acid substance or solid acid substance on which a specific metal is supported. Therefore, the production of coke on the catalyst surface is inhibited while maintaining the activity of the solid acid catalyst in a hydrocarbon conversion reaction, and as a result, the catalyst of the present invention exhibits an effect of improving its lifespan.

Claims19

Dependent claims

A method of preparing a gadolinium (Gd)-containing anti-coking solid acid catalyst having a physical property of reducing coke formation, the method comprising:

a first step of determining an amount of Gd or Gd-providing precursor to be used relative to the total weight of the solid acid catalyst that does not include Gd, wherein the determined amount of Gd reduces the coking of the solid acid catalyst below a specific level under a specific reaction condition in which the solid acid catalyst is intended to be used;
and
a second step of preparing the Gd-containing anti-coking solid acid catalyst using the amount determined in the first step, the second step comprising:
obtaining an aqueous solution containing the Gd or the Gd-providing precursor;
mixing the aqueous solution with a solid acid;
drying the mixture to obtain a catalyst precursor material;
and
calcining the catalyst precursor material to obtain the Gd-containing anti-coking solid acid catalyst having the physical property of reducing coke formation.

5 more elements

An anti-coking catalyst having a physical property of reducing coke formation, which is a Gd-containing solid acid catalyst wherein a film comprising Gd metal or gadolinium oxide is present on the surface of the solid acid catalyst with a nano-size thickness.

Dependencies are inferred from the claim text.

Gd-containing, anti-coking solid acid catalysts and preparation method and use thereof

Life of this patent

Gd-containing, anti-coking solid acid catalysts and preparation method and use thereof

Life of this patent

Abstract

Claims19