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VOx/Zr-TUD-1 catalyst and method for preparing fluorine-containing epoxy oligomer-based styrene through catalytic dehydrogenation of VOx/Zr-TUD-1 catalyst

A TUD-1, based styrene technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of many harmful waste gas and waste water, harsh preparation conditions, low production efficiency, etc. The effect of green process, high conversion rate and selectivity, and simple preparation process

Pending Publication Date: 2021-10-29
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the harsh preparation conditions for the current production of fluorine-containing epoxy oligomer-based styrene, the production process produces more harmful waste gas and waste water, high economic costs and low production efficiency, and provides a VOx / Zr-TUD-1 catalyst, and the fluorine-containing epoxy oligomer-based ethylbenzene with carbonyl / ester group linking arm, which is simple to prepare and low in cost, is used as the reaction substrate, and the catalyst is used to catalyze dehydrogenation to realize fluorine-containing epoxy Process for efficient preparation of oligomer-based styrene

Method used

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  • VOx/Zr-TUD-1 catalyst and method for preparing fluorine-containing epoxy oligomer-based styrene through catalytic dehydrogenation of VOx/Zr-TUD-1 catalyst
  • VOx/Zr-TUD-1 catalyst and method for preparing fluorine-containing epoxy oligomer-based styrene through catalytic dehydrogenation of VOx/Zr-TUD-1 catalyst
  • VOx/Zr-TUD-1 catalyst and method for preparing fluorine-containing epoxy oligomer-based styrene through catalytic dehydrogenation of VOx/Zr-TUD-1 catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Mix and stir 24.7g triethanolamine and 6.5g deionized water, add 33.2g ethyl orthosilicate during the stirring process to obtain solution 1; at the same time take 1.35g zirconium nitrate pentahydrate and 2mL deionized water, mix and stir to dissolve, then Add the dissolved solution to solution 1 and stir for 30 minutes to obtain solution 2; add 33.2g tetraethylammonium hydroxide to solution 2, stop stirring immediately after adding, and leave it to stand for aging at room temperature for 12 hours; The solution was placed in a blast drying oven at 98°C and dried for 10 hours to obtain the Zr-TUD-1 precursor; then the obtained Zr-TUD-1 precursor was placed in a hydrothermal kettle lined with polytetrafluoroethylene, Put the hydrothermal kettle in a blast drying oven and crystallize at 180°C for 8 hours; place the crystallized product in a muffle furnace, raise the temperature to 600°C at a rate of 1°C / min, and keep the temperature constant in the air atmosphere Calcine...

Embodiment 2

[0047] In this example, the Zr-modified TUD-1 molecular sieve with a Si / Zr substance ratio of 100 was prepared according to the method of Example 1, and the other steps were the same as in Example 1 to obtain a catalyst 5V / Zr-TUD-1-100 .

Embodiment 3

[0049] In this example, the Zr-modified TUD-1 molecular sieve with a Si / Zr substance ratio of 200 was prepared according to the method of Example 1, and the other steps were the same as in Example 1 to obtain a catalyst 5V / Zr-TUD-1-200 .

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Abstract

The invention discloses a VOx / Zr-TUD-1 catalyst and a method for preparing fluorine-containing epoxy oligomer based styrene through catalytic dehydrogenation. According to the catalyst, Zr modified TUD-1 is taken as a carrier, an active component vanadium oxide is loaded, and the loading amount of vanadium is 2%-10%. The method comprises the following steps of: preparing fluorine-containing epoxy oligomer-based ethylbenzene with a carbonyl / ester group connecting arm through a traditional organic synthesis method; catalyzing the fluorine-containing epoxy oligomer-based ethylbenzene with the carbonyl / ester group connecting arm to dehydrogenize by utilizing VOx / Zr-TUD-1 to prepare the fluorine-containing epoxy oligomer-based styrene monomer. The problems of high preparation cost, harsh synthesis conditions and low product yield existing in a traditional organic synthesis preparation method are solved, the yield of the target monomer can reach 46.5% and 43.2% at most, the purpose of simultaneously carrying out catalyst regeneration and dehydrogenation reaction is achieved through a two-channel fixed bed reactor, and efficient and continuous preparation of the target monomer is achieved.

Description

technical field [0001] The invention belongs to the technical field of industrial catalysis and fluorine-containing functional materials, and specifically relates to a VOx / Zr-TUD-1 catalyst, and the catalyst catalyzes the efficient preparation of fluorine-containing epoxy oligomer-based ethylbenzene with carbonyl / ester group connecting arms Fluorinated epoxy oligomer based styrene method. Background technique [0002] Fluorine-containing polymers refer to a class of polymers in which some or all of the hydrogen atoms connected to C-C bonds in polymers are replaced by fluorine atoms. Because of its low coefficient of friction, low surface free energy, good biocompatibility, and excellent properties such as water resistance, oil resistance, weather resistance, and chemical resistance, since the 1930s, fluoropolymers have been widely used in Aerospace, industrial construction, machinery, military, electronics, medicine and other fields. [0003] supercritical carbon dioxide (...

Claims

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Application Information

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IPC IPC(8): B01J29/78C07C67/28C07C69/708C08G65/331C08G65/337
CPCB01J29/78C07C67/28C07C67/14C08G65/337C08G65/3317C07C69/708Y02P20/141Y02P20/584
Inventor 陈建刚殷亚伟刘伟刘昭铁沈淑坤李睿清杨乐
Owner SHAANXI NORMAL UNIV
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