Catalyst for isobutylene polymerization and preparation method thereof

A catalyst and isobutylene technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as uncertain production and application prospects, low production added value, waste of resources, etc., and achieve high economic benefits and Effects of market prospect, energy consumption reduction, and ease of operation

Inactive Publication Date: 2017-07-21
SHANDONG CHENGTAI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] my country has abundant isobutylene resources, it is a very good chemical raw material, but currently it is mainly used to produce methyl tert-butyl ether, tert-butanol, butyl rubber, etc. with low added value and huge demand. For isobutylene, it is a very serious waste of resources
[0004] Since methyl tert-butyl ether, as a gasoline additive, has potential pollution risks to water sources, it has been banned in the United States, making its production and application prospects very uncertain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Embodiments, a catalyst for isobutylene polymerization is composed of the following parts by weight, 10 parts of amorphous silicon aluminum, 20 parts of molecular sieves, 13 parts of magnesium oxide, 9 parts of sodium carbonate, 13 parts of activated carbon, 8 parts of basic aluminum sulfate, 8 parts of kaolin, 17 parts of diboron trioxide, 15 parts of ferric oxide, 25 parts of nano zinc oxide particles, and 8 parts of calcium oxide.

[0028] The molecular sieve is a mixture of SAPO-11 molecular sieve and beta zeolite molecular sieve, and the mass ratio of SAPO-11 molecular sieve and beta zeolite molecular sieve is 1:2.

[0029] The particle size of the nano zinc oxide particles is 50-10nm, and the length is 80-30nm.

[0030] The relative crystallinity of the SAPO-11 molecular sieve is 98%, and the crystal particle size is 2.0 μm.

[0031] The specific surface area of ​​the amorphous silicon aluminum is 350-600m 2 / g, the pore volume is 0.75 -1.30ml / g.

[0032] The ...

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PUM

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Abstract

The invention discloses a catalyst for isobutylene polymerization and a preparation method thereof. The catalyst is composed of, by weight, 10 parts of amorphous silicon aluminum, 20 parts of molecular sieve, 13 parts of magnesium oxide, 9 parts of sodium carbonate, 13 parts of activated carbon, 8 parts of alkaline aluminum sulfate, 8 parts of kaolin, 17 parts of diboron trioxide, 15 parts of iron trioxide, 25 parts of nano zinc oxide particles and 8 parts of calcium oxide. The catalyst has the advantages that the catalyst prepared by the method has high control ability on polymerization degree of isobutylene and can only directionally catalyze isobutylene to be diisobutylene, triisobutylene and tetraisobutylene, and the catalyst has low requirements on raw materials and high adaptability.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a catalyst for isobutylene polymerization and its [0002] Preparation. Background technique [0003] my country has abundant isobutylene resources, it is a very good chemical raw material, but currently it is mainly used to produce methyl tert-butyl ether, tert-butanol, butyl rubber, etc. with low added value and huge demand. For isobutylene, it is a very serious waste of resources. [0004] Since methyl tert-butyl ether, as a gasoline additive, has potential pollution risks to water sources, it has been banned in the United States, making its production and application prospects very uncertain. Therefore, a new chemical process is developed to prepare isobutene into diisobutene, triisobutene and tetraisobutene, which become high value-added products and solve the problem of isobutene. Therefore, it becomes necessary to develop a catalyst that can only polymerize isobutene i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C07C2/16C07C11/02
CPCB01J29/005B01J29/7615B01J29/85B01J2229/186C07C2/16C07C11/02
Inventor 王杰兴张国华吴明明
Owner SHANDONG CHENGTAI CHEM IND
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