Composite zeolite catalyst for preparing alcohol and ether compounds and preparation thereof

A combination of zeolite and catalyst technology, applied in the direction of preparation of ether by addition of unsaturated compounds, physical/chemical process catalyst, ether preparation, etc., can solve the problems of easy hydrolysis deactivation, low production capacity, complicated preparation, etc., and achieve good repeatability , easy operation and simple preparation process

Inactive Publication Date: 2005-09-14
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although strong acid resin has high catalytic activity, due to its disadvantages such as complex preparation, easy hydrolysis deactivation, non-regeneration, and low production capacity, many companies are currently working on the research of zeolite catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] Example 1: Take SiO 2 / Al 2 o 3 is 5.5, the relative crystallinity is 97%, the unit cell parameter is 2.468nm, Na 2 O is 200 grams of NaY zeolite with a weight content of 10.3%, crushed to less than 20 mesh, and containing 160 grams of NH in 1.6 liters 4 NO 3 The solution was stirred at 90-95°C for 2 hours, cooled to 45°C, filtered off the mother liquor, and repeated 3 times, then 2 liters of deionized water was added to wash the filter cake, and finally the filter cake was placed in a hydrothermal treatment furnace. Under the condition of 600°C, control the system pressure at 0.08MPa, and process for 3 hours. The resulting product unit cell parameters are 2.444nm, SiO 2 / Al 2 o 3 The ratio is 5.7, Na 2 The O weight content is 2.5%, and the relative crystallinity is 82%.

example 2

[0028] Example 2: Take SiO 2 / Al 2 o 3 is 5.5, the relative crystallinity is 97%, the unit cell parameter is 2.468nm, Na 2 O weight content is that 200 grams of NaY zeolite of 10.3% are pulverized to be less than 20 orders, with the NH of 1.5N 4 1 liter of CI solution was exchanged at 90-95°C for 2 hours, cooled to less than 45°C, filtered off the mother liquor, and repeated 3 times, then added 2 liters of deionized water to wash the filter cake, and finally placed the filter cake in a hydrothermal treatment furnace. Control the partial pressure of water vapor to less than 0.15MPa, supply electricity to raise the temperature to 650°C, and keep it for 1 hour. The unit cell constant of the obtained product is 2.442~2.445nm, SiO 2 / Al 2 o 3 The ratio is 5.8, Na 2 The O weight content is 2.2%, and the relative crystallinity is 83%.

example 3

[0030] SiO will be synthesized under hydrothermal conditions 2 / Al 2 o 3 100 grams of ZSM-5 zeolite raw powder with a temperature of 45-60 is put into a muffle furnace, and air preheated to 500° C. is introduced, and the temperature in the furnace is controlled at 650° C. for 24 hours. The product properties are: the relative crystallinity is 82%, Na 2 O content is 3.2% by weight, SiO 2 / Al 2 o 3 It is 58.2, and the restraint index is 1.8.

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Abstract

The invention provides is a combinational zeolite catalyst making alcohol and aether kinds compounds and the preparation method. The zeolites of the invention are the zeolite Y with 2.420-2.462nm parameter and ZSM-5 zeolite through burning and with the organic module agent removed. Mix the two kinds of zeolites and use the mixing agent containing H+ and NH4+ for the treatment and then implement drying treatment. The combinational zeolites are the acid components, and are matched with one or some of P, B and Zn and use Al2O3, SiO2-Al2O3 or the clay to form. The catalyst of the invention has high activity, fine selection and flexible operation.

Description

technical field [0001] The present invention relates to a combined zeolite catalyst for the preparation of compounds such as alcohol or ether by hydration of olefins, specifically a zeolite composed of ZSM-5 zeolite and Y zeolite, which is used for the catalysis of the reaction of olefins with water or alcohol to prepare alcohol or ether active ingredient. Background technique [0002] In the catalytic cracking process of the refinery, due to the addition of ZSM-5 additives, while increasing the octane number of gasoline, it also produces a large amount of C 2 -C 7 Olefin mixture, and olefin hydration is an important way to consume olefins, and it is also an important method for industrial production of alcohol. Olefin hydration reaction is a typical acid-catalyzed reaction, and its catalyst is generally H 2 SO 4 and H 3 PO 4 / SiO 2 , due to the corrosion, loss and other problems of the above two catalysts, they have been gradually replaced by zeolite catalysts and st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/06B01J29/08B01J29/40C07C29/04C07C41/06
Inventor 高进周焕文徐杰王峰周利鹏李晓强
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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