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Process for the alkylation of aromatic hydrocarbons with C1-C8 alcohols

A technology for alkylation and aromatic hydrocarbons, used in chemical instruments and methods, carbon-based compound preparation, hydroxyl compound preparation, etc.

Active Publication Date: 2014-03-19
VERSALIS SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alcohols can be mixed with corresponding alkenes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069] 135 g of catalyst comprising ZSM-12, prepared as described in Example 2 of US2003 / 0069459, were charged into a tubular, jacketed reactor with a diameter of 2.2 cm heated by diathermic oil. After removal of water by stratification / decantation, according to the recirculation ratio 4:1, the IPA content equal to 20% by weight relative to the mixture of benzene / IPA (isopropanol), mixed with the distillate from the same reaction , 540 g / hour of a benzene / IPA mixture was fed to the reactor from above. The reaction conditions are as follows:

[0070] temperature = 190°C,

[0071]Pressure=1.3MPa

[0072] These conditions correspond to operation in the "trickle" state, the reagents, benzene and isopropanol are fed from above and are present in the reactor in the gas phase and the alkylation product is present in the reactor in the liquid phase. Assignment of the physical states of reagents and products is performed by comparison with existing phase diagrams for the components ...

example 2

[0075] 135 g of the same catalyst comprising ZSM-12 as used in Example 1 was charged to a 2.2 cm diameter tubular, jacketed reactor heated by diathermic oil. After removal of the water, a mixture of 718 g / hour of benzene / IPA with an IPA content equal to 15% by weight mixed with the reaction distillate was fed to the reactor from above according to a recycle ratio of 4:1. The amount of IPA fed to the reactor per hour was the same as Example 1. The reaction conditions are as follows:

[0076] temperature = 190°C,

[0077] Pressure=1.3MPa

[0078] These conditions correspond to operation in the "trickle" state, the reagents, benzene and isopropanol are fed from above and are present in the reactor in the gas phase and the alkylation product is present in the reactor in the liquid phase. The assignment of the physical states of reagents and products was performed as described in Example 1.

[0079] Under these conditions, a quantitative conversion of IPA was obtained with a se...

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Abstract

Process for the alkylation of aromatic hydrocarbons by means of aliphatic alcohols containing from 1 to 8 carbon atoms, which comprises feeding the hydrocarbon and alcohol to the head of a fixed-bed reactor, operating with "trickle flow" regime, containing at least one layer of a catalyst comprising a zeolite selected from medium-pore zeolites and large-pore zeolites.

Description

technical field [0001] The present invention relates to a 1 -C 8 Process for the alkylation of aromatic hydrocarbons with fatty alcohols. [0002] More specifically, the present invention relates to a method using C 1 -C 8 Process for the alkylation of fatty alcohols of aromatic hydrocarbons containing 6 to 10 carbon atoms. [0003] In the case of an alcohol having two or more carbon atoms, the alcohol and the corresponding alkene (i.e., an alkene having the same number of carbon atoms as the alcohol and providing the same alkyl group during alkylation) ) can also be used in the method of the present invention. [0004] Even more specifically, the invention relates to a process for the alkylation of benzene with isopropanol (IPA) or a mixture of isopropanol and propylene to obtain cumene, and with ethanol (ethanol also derived from biomass, possibly with ethylene Mixtures) Alkylation of benzene to obtain ethylbenzene. In particular, the invention also relates to a proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/86C07C37/08C07C39/04C07C15/085
CPCC07C45/53C07C37/08C07C29/143C07C2/864C07C2529/70Y02P20/582Y02P20/52C07C15/073C07C15/06C07C15/107C07C15/085C07C15/08C07C39/04C07C49/08C07C31/10C07C2/86
Inventor 保罗·卡拉雷苏埃琳娜·本奇尼亚历山德罗·卡萨里尼亚历山德罗·德尔塞皮亚乔瓦尼·安东尼奥·富瓦斯
Owner VERSALIS SPA
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