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Process for producing phenol

A technology of phenol and hexylbenzene, applied in the field of preparing phenol, can solve the problems such as reducing the yield of cyclohexanone

Inactive Publication Date: 2013-11-13
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods reduce the yield of the desired cyclohexanone, and in addition may require additional distillation equipment

Method used

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  • Process for producing phenol
  • Process for producing phenol
  • Process for producing phenol

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Embodiment Construction

[0028] Described herein is a process for preparing phenol by oxidizing cyclohexylbenzene to form a first reaction product comprising cyclohexylbenzene hydroperoxide and then cleaving at least a portion of the cyclohexylbenzene hydroperoxide to form a reaction product comprising phenol and cyclohexylbenzene. The second reaction product of hexanone. One or both of the first and second reaction products contain cyclohexenone as an impurity, which is difficult to separate from the desired cyclohexanone by conventional distillation. Accordingly, the process of the present invention employs selective hydrogenation to convert at least a portion of the cyclohexenone in the first and / or second reaction product to cyclohexanone. The selective hydrogenation process is accompanied by only minimal yield losses of the desired cyclohexanone.

[0029] Preparation of cyclohexylbenzene

[0030] Any known technique may be used to prepare the cyclohexylbenzene (CHB) employed in the process of t...

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Abstract

In a process for producing phenol, cyclohexylbenzene is oxidized to form a first reaction product comprising cyclohexylbenzene hydroperoxide and at least a portion of the cyclohexylbenzene hydroperoxide is then cleaved to form a second reaction product comprising phenol and cyclohexanone. At least one of the first and second reaction products comprises cyclohexenone, which is hydrogenated to produce further cyclohexanone.

Description

[0001] priority statement [0002] This application claims priority to US Provisional Application Serial No. 61 / 447,170, filed February 28, 2011, and European No. 11163435.8, filed April 21, 2011, the disclosures of which are incorporated herein by reference in their entirety. [0003] Cross References to Related Applications [0004] This application is related to International Patent Cooperation Treaty Application No. PCT / US2010 / 057753 (2010EM045), filed November 23, 2010. technical field [0005] The present invention relates to a process for the preparation of phenol. Background technique [0006] Phenol is an important product in the chemical industry and is used, for example, in the preparation of phenolic resins, bisphenol A, ε-caprolactam, adipic acid and plasticizers. [0007] Currently, the most common route for phenol production is the Hock process via cumene. This is a three-step process that involves alkylation of benzene with propylene to produce cumene, fol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C39/04C07C37/08C07C37/07C07C45/62C07C49/403C07C2/74C07C13/28C07C45/53C07C409/14C07C407/00
CPCC07C2/74C07C45/53C07C37/07C07C45/62C07C409/14C07C407/00C07C2101/14C07C2101/16C07C37/08C07C39/04C07C49/403C07C13/28C07C2601/14C07C2601/16C07C45/517C07C37/055C07C37/58
Inventor C·L·贝克J·R·拉特纳K·H·克施勒F·M·贝尼特斯C·M·史密斯
Owner EXXONMOBIL CHEM PAT INC
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