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Catalyst carrier material made of fluorinated and modified pseudo-boehmite and preparation method

A pseudo-boehmite and catalyst carrier technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as poor catalytic activity, unfavorable performance of catalytic active site formation, and small specific surface area , to achieve the effect of improved catalyst activity, good redox performance and high strength

Inactive Publication Date: 2014-04-16
SHANDONG YUN NENG CATALYTIC TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the acidity is weak, which is not conducive to the formation of catalytic active sites and their performance, and it is difficult to meet the needs of deep desulfurization
Generally, pseudo-boehmite is prepared by roasting pseudo-boehmite at 600°C for 3 hours. In this method, the carrier made of pseudo-boehmite has low strength, small specific surface area, small pore volume, poor catalytic activity, and poor redox performance. , it is difficult to meet the requirements of catalyst deep desulfurization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the first reaction kettle for neutralization, add an aluminum sulfate solution with an alumina concentration of 50g / L and a sodium metaaluminate solution with an alumina concentration of 22g / L and a caustic ratio of 1.2, and the flow rate of the fixed aluminum sulfate solution is 1000L / h, control the pH value to 7.2, adjust the flow rate of sodium metaaluminate according to the change of pH value, and control the reaction temperature at 60°C; neutralize the slurry in the first reactor through the overflow reaction pipe and flow into the neutralization second reactor, Adding concentration is the sodium carbonate solution of 150g / L in the neutralization second reaction kettle simultaneously, and the control pH value is 8.7, regulates the flow rate of sodium carbonate according to the variation of pH value, controls reaction temperature at 60 ℃; Neutralization second reaction kettle The slurry in the aging reactor flows into the aging reactor through the overflow reacti...

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Abstract

The invention discloses a catalyst carrier material made of fluorinated and modified pseudo-boehmite and a preparation method. After the fluorinated and modified pseudo-boehmite is roasted for 3 hours at the temperature of 600 DEG C, fluorine and aluminium oxide are contained. By adoption of the preparation method, the fluorine can be dispersed on the surface of the aluminium oxide, and the prepared pseudo-boehmite is used for preparing the catalyst, so that the strength of the catalyst is high, the benefit to improving the activity of the catalyst is achieved and the oxidation-reduction performances are good.

Description

technical field [0001] The invention belongs to the field of catalyst carrier materials, in particular to a fluorine-added modified pseudo-boehmite catalyst carrier material and a preparation method. Background technique [0002] With the acceleration of the dieselization trend of vehicles worldwide, the demand for diesel oil is increasing. The share of catalytic cracking diesel oil in my country's diesel oil product market exceeds one-third, and the property of catalytic cracking diesel oil is poor, mainly manifested as High density, high content of impurities such as sulfur and nitrogen. Although the sulfur content index in diesel oil in my country has been greatly reduced compared with the past, there is still a large gap compared with advanced countries. [0003] The conventional carrier of industrial diesel deep hydrodesulfurization catalyst is alumina, which has good structure and thermal stability, good mechanical properties, and suitable pore size. However, the acid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/04
Inventor 于刚崔志力陈中东于雷
Owner SHANDONG YUN NENG CATALYTIC TECH
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