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A kind of macroporous fluidized catalytic cracking catalyst and preparation method thereof

A fluidized catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as easy blockage and low cracking activity

Active Publication Date: 2014-10-15
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the ready-made catalytic cracking catalyst, the catalyst matrix is ​​easy to block the pipeline of halloysite, resulting in its lower cracking activity

Method used

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  • A kind of macroporous fluidized catalytic cracking catalyst and preparation method thereof
  • A kind of macroporous fluidized catalytic cracking catalyst and preparation method thereof
  • A kind of macroporous fluidized catalytic cracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0023] Embodiment 1~4 ionic liquid method synthesis catalyst C-1, C-2, C-3, C-4

[0024] Step 1: Mix 5 grams of ionic liquid [BMIM][Cl], 50 grams of halloysite and 114.2 milliliters of water to obtain slurry A;

[0025] The second step: 50 grams of USY molecular sieve, 28.19 grams of pseudo-boehmite, H 3 PO 4 After mixing 44.55 grams and 181.67 milliliters of water evenly, dilute nitric acid solution was added dropwise under stirring to adjust the pH value to 2 to obtain slurry B;

[0026] The third step: mix the slurry A and the slurry B, and then sieve the 60-400 mesh particles after aging and spray molding, and bake them at 500 °C for 2 hours in the air atmosphere, and use NH 4 NO 3 The solution is ion-exchanged and then calcined at 550° C., and the ion-exchange operation is repeated three times to obtain fluidized catalytic cracking catalyst C-1.

[0027] In addition to replacing the ionic liquid [BMIM][Cl] with the ionic liquid [HNEt3][NO 3 ], [BPy][BF 4 ], [BMPi][...

Embodiment 5

[0028] Embodiment 5 ionic liquid synthesis catalyst C-5

[0029] Step 1: Mix 2.5 grams of ionic liquid [BMIM][Cl], 25 grams of halloysite and 64.2 milliliters of water to obtain slurry A;

[0030] The second step: 50 grams of USY molecular sieve, 25 grams of kaolin, 28.19 grams of pseudo-boehmite, H 3 PO 4 After mixing 44.55 grams and 231.67 milliliters of water evenly, dilute nitric acid solution was added dropwise under stirring to adjust the pH value to 2 to obtain slurry B;

[0031] The third step: mix the slurry A and the slurry B, and then sieve the 60-400 mesh particles after aging and spray molding, and bake them at 500 °C for 2 hours in the air atmosphere, and use NH 4 NO 3 The solution is ion-exchanged and then calcined at 550° C., and the ion-exchange operation is repeated three times to obtain fluidized catalytic cracking catalyst C-5.

Embodiment 6

[0032] Example 6 Synthesis of reference sample catalyst R-1

[0033] The first step: mixing 50 grams of halloysite with 114.2 milliliters of water to obtain slurry A;

[0034] The second step: 50 grams of USY molecular sieve, 28.19 grams of pseudo-boehmite, H 3 PO 4 After mixing 44.55 grams and 181.67 milliliters of water evenly, dilute nitric acid solution was added dropwise under stirring to adjust the pH value to 2 to obtain slurry B;

[0035] The third step: mix the slurry A and the slurry B, and then sieve the 60-400 mesh particles after aging and spray molding, and bake them at 500 °C for 2 hours in the air atmosphere, and use NH 4 NO 3 The solution was ion-exchanged and then calcined at 550° C., and the ion-exchange operation was repeated three times to obtain a reference sample catalyst R-1.

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Abstract

The invention provides a macroporous fluid catalytic cracking catalyst which is synthesized by an ionic liquid and halloysite, and a preparation method thereof. The method comprises the following steps: mixing the ionic liquid, the halloysite, a catalytic agent and a molecular sieve; aging, forming and drying the mixture; and removing the ionic liquid, wherein the ionic liquid is used for controlling the assembly of the halloysite, the catalytic agent base material and the molecular sieve. The synthetic catalyst is high in cracking activity and good in gasoline / diesel oil selectivity, and is particularly suitable for being used as a heavy-oil catalytic cracking catalyst.

Description

technical field [0001] The invention relates to a catalyst and the preparation of the catalyst, in particular to a macroporous fluidized catalytic cracking catalyst and a preparation method thereof. The catalyst is suitable for catalytic cracking processing of raw materials containing heavy distillate oil. Specifically, it relates to the assembly of halloysite, catalyst matrix and molecular sieve by using ionic liquid to synthesize a fluidized catalytic cracking catalyst with large pores. Background technique [0002] With the increasing demand for light oil products and the increase in the price of raw oil, catalytic cracking is taking an increasing proportion in the lightening of heavy oil. Due to the large kinetic diameter of residual oil molecules (>2.5 nm), the traditional catalytic cracking catalyst has a small pore size, which makes it difficult for the macromolecular components in the heavy oil to enter the catalyst cavity for reaction, which brings difficulties i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08B01J35/10C10G11/05
Inventor 薛青松王一萌何鸣元
Owner EAST CHINA NORMAL UNIV