Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of composite carrier material

A technology of composite carrier and carrier material, applied in catalyst carriers, chemical instruments and methods, molecular sieve catalysts, etc., can solve the problems of blocking molecular sieve channels, blocking pores, affecting the modification process of molecular sieve, etc., to improve the performance and pore volume. and acid-enhancing effect

Active Publication Date: 2015-05-13
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that part of the amorphous silicon-alumina is easy to enter the pores of the molecular sieve, which not only blocks the pores of the molecular sieve, reduces the pore volume and specific surface area of ​​the molecular sieve, but also covers part of the acid center, which affects the catalytic performance of the molecular sieve. It also affects the modification process of molecular sieves, so that the catalytic performance of molecular sieves and amorphous silicon aluminum cannot be fully exerted
In this method, molecular sieves will agglomerate in the silica-alumina carrier, or molecular sieves and amorphous silica-alumina will enter into each other's channels, blocking some channels and covering a part of the acid center, so that the specific surface area, pore volume and acidity of the carrier will increase to a limited extent.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Composite carrier material B prepared according to the method provided by the present invention.

[0020] Add 1000g of amorphous silica-alumina (30wt% silicon dioxide content) to 2 liters of distilled water, stir and beat to form a slurry (a), dissolve 100g of polyoxyethylene amide in 1L of water to form a solution (b), take 250 grams Industrially produced NaY zeolite (SiO 2 / A1 2 o 3 =5.0 (molar ratio), unit cell constant is 2.463nm, Na 2 O content is 9wt%), with 2500ml 10% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 2500ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, and the slurry (a) and solution (b) were added at the same time, and then the first hydrothermal treatment was carried out at 0.098 MPa and 550°C for 2 hours, and then 10% NH 4 NO 3 Aqueous solution is exchanged to Na 2 After O3 The aqueous solution was exchanged, filtered, washed with water, and dried at 120° C. for 4 hou...

Embodiment 2

[0022] Composite carrier material B prepared according to the method provided by the present invention.

[0023] Add 1,000g of amorphous silica-alumina (with a silica content of 30wt%) to 2 liters of distilled water, stir and beat to form a slurry (a), dissolve 120g of polyethylene glycol ether in 1L of water to form a solution (b), take 250 g of industrially produced NaY zeolite (SiO 2 / A1 2 o 3 =5.0 (molar ratio), unit cell constant is 2.463nm, Na 2 O content is 9wt%), with 2500ml 10% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 2500ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, followed by the first hydrothermal treatment at 0.098 MPa and 550 °C for 2 hours, and then 10 wt% NH 4 NO 3 Aqueous solution is exchanged to Na 2O3 The aqueous solution was exchanged, filtered, washed with water, and dried at 120° C. for 4 hours to obtain a composite carrier material B.

Embodiment 3

[0025] Composite carrier material C prepared according to the method provided by the present invention.

[0026] Add 1000g of amorphous silica-alumina (silica content: 20wt%) to 2 liters of distilled water, stir and beat to form a slurry (a), dissolve 150g of polyoxyethylene amine in 1L of water to form a solution (b), take 250 grams Industrially produced NaY zeolite (SiO 2 / A1 2 o 3 =5.0 (molar ratio), unit cell constant is 2.463nm, Na 2 O content is 9wt%), with 2500ml 10% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 2500ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, and the slurry (a) and solution (b) were added at the same time, and then the first hydrothermal treatment was carried out at 0.098 MPa and 550°C for 2 hours, and then 10% NH 4 NO 3 Aqueous solution is exchanged to Na 2 After O3 The aqueous solution was exchanged, filtered, washed with water, and dried at 120° C. for 4 hours to ob...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a composite carrier material. The composite carrier material comprises a Y-type molecular sieve and an amorphous refractory inorganic oxide. The preparation method comprises that in NaY molecular sieve modification, amorphous refractory inorganic oxide slurry and a surfactant are used so that the molecular sieve and the amorphous refractory inorganic oxide are uniformly dispersed; molecular sieve agglomeration or channel blocking is avoided; a specific surface area and a pore volume of the composite carrier material are greatly improved; and catalyst performances are improved. The composite carrier material is especially suitable for being used as a carrier component of a hydrocracking catalyst.

Description

technical field [0001] The present invention relates to a method for preparing a composite carrier material, in particular to a method for preparing a catalyst carrier material containing molecular sieves and amorphous refractory inorganic oxides, especially for hydrocracking catalysts containing Y-type molecular sieve- A method for preparing a catalyst support material of an amorphous refractory inorganic oxide. Background technique [0002] In general, a hydrocracking catalyst is a catalyst that has both cracking and hydrogenation-dehydrogenation functions. The cracking function is provided by an acidic carrier, while the hydrodehydrogenation function is provided by an active metal. Most of the acidic carrier is alumina or amorphous silica-alumina as the carrier, together with a certain amount of molecular sieve. The basic preparation process is to first Alumina or silicon-containing alumina is directly mixed with molecular sieve and other additives, then shaped, dried an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J35/10B01J29/08C10G47/16
Inventor 孙晓艳樊宏飞王占宇
Owner CHINA PETROLEUM & CHEM CORP