Title:
SILICA-ALUMINA POWDER, METHOD FOR SILICA-ALUMINA POWDER, FLUID CATALYTIC CRACKING CATALYST, AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2022158149
Kind Code:
A
Abstract:
To provide a silica-alumina powder having low coke formation, high gasoline yield, thermal stability and moderate acid density and acid strength for use in a fluid catalytic cracking catalyst and a method for producing the same, and a fluid catalytic cracking catalyst containing such silica-alumina powders.SOLUTION: There is provided a silica-alumina powder and a fluid catalytic cracking catalyst containing such silica-alumina powders with the following characteristics a-f: a. SiO2 is contained in the range of 8 to 20 mass%; b. The crystallite size of boehmite alumina (020) plane by X-ray diffraction is 10 to 50 nm; c. A specific surface area is in the range of 90-230 m2/g; d. The acid density, which is the amount of acid per specific surface area, is 0.75 to 1.00 μmol/m2; e. The crystal transition temperature from boehmite alumina to gamma alumina in TG-DTA measurement is 470°C or higher; and f. Lewis acid showing a peak near 2230 cm-1 in CO adsorption FT-IR measurement exists.SELECTED DRAWING: Figure 1
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Inventors:
SETO YUKA
MIZUNO TAKAYOSHI
MITSUI TOMOHIRO
YAMAZAKI HIROSHI
MIZUNO TAKAYOSHI
MITSUI TOMOHIRO
YAMAZAKI HIROSHI
Application Number:
JP2021062849A
Publication Date:
October 17, 2022
Filing Date:
April 01, 2021
Export Citation:
Assignee:
JGC CATALYSTS & CHEMICALS LTD
International Classes:
C01B33/12; B01J21/12; B01J29/08; B01J37/00; B01J37/03; B01J37/30; C01B33/18; C10G11/18
Attorney, Agent or Firm:
Patent Attorney Ginza Maronnier Patent Office
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