Process for producing mixtures of cyclohexanone and cyclohexanol

A technology of cyclohexanone and cyclohexanol, which is applied in the field of preparing mixtures of cyclohexanone and cyclohexanol, can solve the problems of increasing process complexity and cost, and achieve the effect of reducing the need

Inactive Publication Date: 2016-03-16
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction solvent must be removed in subsequent steps, increasing process complexity and cost

Method used

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  • Process for producing mixtures of cyclohexanone and cyclohexanol
  • Process for producing mixtures of cyclohexanone and cyclohexanol
  • Process for producing mixtures of cyclohexanone and cyclohexanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Embodiment 1: Preparation of 1.0% Pt / Al 2 o 3 catalyst

[0113] Use Al 2 o 3 Extrudates as catalyst supports for preparation of Pt-containing catalysts, Al 2 o 3 The surface area of ​​the extrudate is 306m 2 / g, pore volume 0.85cm 3 / g, and aperture by BETN 2 Adsorption measurement. Passed (NH 3 ) 4 Pt(NO 3 ) 2 Aqueous solution impregnated the support, adding Pt to Al 2 o 3 carrier. Pt metal loading on the support was adjusted to 1.0%. After impregnation, the samples were equilibrated in glass dishes at room temperature for 60 min. The samples were then dried in air at 250°F (120°C) for 4 hours and then in a box oven at 680°F (360°C) in air for 3 hours. The furnace was ramped at 3°F / minute to the calcination temperature and the calcination gas flow rate was adjusted to 5 volumes per catalyst volume per minute.

Embodiment 2

[0114] Embodiment 2: Preparation of 1.0% Pd / Al 2 o 3 catalyst

[0115] The difference of repeating the preparation of Example 1 is that the Al 2 o 3 The carrier adopts tetraammonia palladium nitrate ((NH 3 ) 4 Pd(NO 3 ) 2 ) aqueous solution impregnation. Pd metal supported on the support was adjusted to 1.0%.

Embodiment 3

[0116] Embodiment 3: Preparation of 1.0% Pd / SiO 2 catalyst

[0117] The 1 / 20" (1.27mm) four-lobed silica extrudate containing Pd was passed through tetraammonia palladium nitrate ((NH 3 ) 4 Pd(NO 3 ) 2 ) aqueous solution incipient wetness dipping preparation. The Pd metal supported on the support was adjusted to 1.0%. After immersion, the samples were allowed to equilibrate in glass dishes at room temperature for 60 minutes. The samples were then dried in air at 250°F (120°C) for 4 hours and then in a box oven at 680°F (360°C) in air for 3 hours. The furnace was ramped at 3°F / minute to the calcination temperature and the calcination gas flow rate was adjusted to 5 volumes per catalyst volume per minute.

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Abstract

In a process for producing a mixture of cyclohexanone and cyclohexanol, a feed comprising cyclohexanone is contacted with hydrogen in the presence of a hydrogenation catalyst under hydrogenation conditions effective to convert part of the cyclohexanone in the feed into cyclohexanol and thereby produce a hydrogenation product containing cyclohexanone and cyclohexanol. A mixture of cyclohexanone and cyclohexanol is then obtained from the hydrogenation product.

Description

[0001] Claims of priority to related applications [0002] This application claims priority and benefit from U.S. Provisional Application No. 61 / 857,813, filed July 24, 2013, and European Patent Application No. 13187106.3, filed October 2, 2013, the full disclosure of all of these documents This article is incorporated by reference. technical field [0003] The present invention relates to a process for the preparation of mixtures of cyclohexanone and cyclohexanol. Background technique [0004] A mixture of cyclohexanone and cyclohexanol, also known as KA oil, is used as a precursor for the production of nylon-6,6. KA oil is currently produced by the catalytic oxidation of cyclohexane. However, the conversion is extremely low (of the order of 3-5%) and the selectivity to the desired ketone / alcohol mixture is only 70-80%. There is therefore interest in finding alternative methods for the production of mixtures of cyclohexanone and cyclohexanol. [0005] It is well known t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/145C07C29/20C07C35/08B01J23/40B01J23/42
CPCC07C29/20B01J21/04B01J21/08B01J23/14B01J23/42B01J23/44B01J23/626B01J35/026B01J35/1019B01J35/1042B01J35/1061C07C29/145C07C45/006C07C2601/14C07C35/08C07C49/403
Inventor J·M·达卡C·M·史密斯王坤F·M·贝尼特斯R·加尔奇亚J·W·楚K·H·科施勒柏传盛
Owner EXXONMOBIL CHEM PAT INC
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