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Method for preparing tertiary amyl methyl ether

A technology of methyl tert-amyl ether and methanol, applied in the field of preparation of methyl tert-amyl ether, to achieve the effect of easy separation and simple process

Active Publication Date: 2014-08-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the synthesis of methyl tert-amyl ether with ionic liquid as a catalyst

Method used

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  • Method for preparing tertiary amyl methyl ether
  • Method for preparing tertiary amyl methyl ether
  • Method for preparing tertiary amyl methyl ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0015] Comparison of Catalytic Synthesis of Methyl-t-Amyl Ether Catalyzed by Different Catalyst Amounts. The experimental conditions are: the molar ratio of methanol to isopentene is 1.3:1, the liquid space velocity is 1.0ml / ml, the reaction temperature is 80°C, and the reaction pressure is 0.6MPa. The content of methyl tert-amyl ether in the product is measured.

[0016]

Embodiment 5-7

[0018] The effect of different molar ratios of reactants on the reaction results. The experimental conditions are: the amount of catalyst added is 0.4% (mass %) of the total amount of methanol and isopentene added, the liquid space velocity is 1.0ml / ml, the reaction temperature is 80°C, and the reaction pressure is 0.6MPa. Amyl ether content.

[0019]

Embodiment 9-11

[0021] Effect of different reaction pressures on reaction results. The experimental conditions are: the amount of catalyst added is 0.4% (mass %) of the total amount of methanol and isopentene added, the liquid space velocity is 1.0ml / ml, the reaction temperature is 80°C, and the content of methyl tert-amyl ether in the product is measured.

[0022]

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Abstract

The invention relates to a method for preparing tertiary amyl methyl ether, which comprises the following steps that: 1-methyl-3-n-butyl imidazole fluoroborate ionic liquid is taken as a catalyst; methanol, isoamylene-contained C5 raffinate and the catalyst are evenly mixed, and then, pass through a reaction section of a reactive distillation tower where a filler is loaded at a uniform speed; the temperature of the reaction section is controlled at 70-100 DEG C; and effluent liquid is cooled to room temperature. The one-way conversion rate of the isoamylene obtained through the method can reach over 70%, and the adopted catalyst is easy to separate and can be repeatedly used, so that the method is a new way for preparing the tertiary amyl methyl ether.

Description

Technical field: [0001] The invention relates to a method for preparing methyl tert-amyl ether by utilizing an ionic liquid catalyst. Background technique: [0002] Methyl tert-amyl ether (TAME) is an excellent additive to increase the octane number of gasoline, and it is also an important part of new formula gasoline. TAME has the greatest environmental protection effect. It can remove some volatile C in gasoline 5 Olefins are converted into ethers with very low vapor pressure and clean combustion. The main synthetic route is to use catalytic cracking and pyrolysis of C in gasoline. 5 The fractions are etherified with methanol. [0003] In industry, it is usually obtained by the etherification reaction of methanol and C5 raffinate under the catalysis of cation exchange resin. limit. Therefore, people are looking for better catalysts to replace cation exchange resins, and at the same time continue to explore new catalytic approaches. [0004] In published literatures, ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C43/04C07C41/06B01J31/02
CPCY02P20/10
Inventor 石大川刘丽明赵英翠肖建业张春宇
Owner PETROCHINA CO LTD