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Preparation method of molecular sieve template material for degrading catalytic polycarbonate

A polycarbonate and molecular sieve technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as equipment corrosion, generation of a large amount of waste residue, inability to reuse catalysts, etc., to solve problems that cannot be reused, The effect of good thermal stability and hydrothermal stability

Inactive Publication Date: 2018-10-16
义乌市诠铈新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, when scholars study the depolymerization of PC chemistry, they mainly realize it through thermal cracking, hydrolysis, alcoholysis, super (sub) critical depolymerization and depolymerization in ionic liquid environment, but in the process of depolymerization In the process, the catalyst cannot be reused, which leads to a large amount of waste residue during the depolymerization process, and has a serious corrosion effect on the equipment used for depolymerization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing a molecular sieve template material for catalytic polycarbonate degradation, the preparation technical scheme is as follows:

[0018] According to the number of parts by mass: the 45 parts polyethylene oxide - polypropylene oxide -Polyethylene oxide triblock copolymer , 0.6 parts of polydodecylamide triazine stilbene sulfonate ammonium, 0.6 parts of polyoxyethylene cetyl stearyl diether, 0.3 parts of brominated-4-vinyl-phenol homopolymer, Add 900 parts of hydrochloric acid solution into the reaction kettle, control the temperature at 45°C, stir for 60-80 minutes, then add 90 parts of tetraethyl orthosilicate into the reaction kettle, add slowly, and finish adding within 60 minutes; then control the temperature for 50 ℃, reacted for 22 hours; after the completion, the reaction temperature was raised to 100 ℃, and the reaction was continued for 23 hours; after the reaction was completed, it was naturally cooled to room temperature, then filtered...

Embodiment 2

[0023] A method for preparing a molecular sieve template material for catalytic polycarbonate degradation, the preparation technical scheme is as follows:

[0024] According to the number of parts by mass: the 40 parts polyethylene oxide - polypropylene oxide -Polyethylene oxide triblock copolymer , 0.4 parts of polydodecylamide triazine ammonium stilbene sulfonate, 0.5 parts of polyoxyethylene cetyl stearyl diether, 0.1 parts of homopolymer of brominated-4-vinyl-phenol, Add 800 parts of hydrochloric acid solution into the reaction kettle, control the temperature at 40°C, stir for 60 minutes, then add 85 parts of ethyl orthosilicate into the reaction kettle, add slowly, and finish adding within 70 minutes; then control the temperature at 45°C, React for 18 hours; after completion, raise the reaction temperature to 95°C and continue to react for 20 hours; after completing the reaction, cool to room temperature naturally, then filter, wash, and calcine in a muffle furnace in...

Embodiment 3

[0029] A method for preparing a molecular sieve template material for catalytic polycarbonate degradation, the preparation technical scheme is as follows:

[0030] According to the number of parts by mass: the 50 parts polyethylene oxide - polypropylene oxide -Polyethylene oxide triblock copolymer , 0.8 parts of polydodecylamide triazine ammonium stilbene sulfonate, 0.9 parts of polyoxyethylene cetyl stearyl diether, 0.6 parts of homopolymer of brominated-4-vinyl-phenol, Add 1000 parts of hydrochloric acid solution into the reaction kettle, control the temperature at 50°C, stir for 680 minutes, then add 95 parts of ethyl orthosilicate into the reaction kettle, add slowly, and finish adding within 90 minutes; then control the temperature at 55°C, React for 24 hours; after the completion, raise the reaction temperature to 105°C and continue the reaction for 26 hours; after the completion of the reaction, naturally cool to room temperature, then filter, wash, and calcine in a...

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PUM

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Abstract

The invention relates to the field of preparation of novel materials, in particular to a preparation method of a molecular sieve template material for degrading catalytic polycarbonate. According to the technical scheme, the preparation method comprises the steps of adding a poly(ethylene oxide)-polypropylene oxide-poly(ethylene oxide) triblock copolymer, polydodecanamideaminium triazadiphenylethenesulfonate, polyoxyethylene cetyl stearyl diether, a homopolymer of brominated-4-vinyl-phenol and a hydrochloric acid solution in a reaction kettle; controlling the temperature to be 40-50 DEG C; stirring for 60-80 min; then adding tetraethylorthosilicate in the reaction kettle; after reaction is finished, naturally cooling to the room temperature; and then filtering, washing and calcining to obtain the molecular sieve template material for degrading the catalytic polycarbonate.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for preparing a molecular sieve template material for catalyzing the degradation of polycarbonate. Background technique [0002] The polyester material itself is closely related to the petrochemical industry and the organic chemical industry. The production and demand of polyester materials are increasing. In addition, the domestic PC consumption has reached more than 900,000 t / a. The production of a large amount of waste polyester materials has brought a great burden to the environment and caused some related social problems. Therefore, the recycling technology of polycarbonate materials has received widespread attention. [0003] CN104877168A provides a polycarbonate recovery method. In this method, a solvent with good solubility is selected as the reaction medium, and polycarbonate and solvent are added into a three-necked flask. After the polycarbonate is comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/16B01J29/00C08L69/00
CPCB01J29/00C08J11/16C08J2369/00Y02W30/62
Inventor 王金桢董建国王新
Owner 义乌市诠铈新材料有限公司
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