Method for preparing cyclohexanone by phenol hydrogenation
A technology for the preparation of cyclohexanone and hydrogen, which is applied in the hydrogenation preparation of aromatic hydroxyl compounds, carbon-based compound preparation, chemical instruments and methods, etc., can solve the problems of low conversion rate and selectivity, achieve convenient separation and improve economic efficiency Effect
Active Publication Date: 2019-12-13
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the catalysts reported in the above-mentioned patents and documents are used for the industrial production of cyclohexanone and still have the disadvantages of low conversion rate and selectivity
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] 27 g γ-Al 2 o 3 and 3 grams of α-Al 2 o 3 powder mixed with PdCl 2 The Pd / alumina catalyst (catalyst A1) was obtained by impregnating with an aqueous solution (w(Pd)=0.1%), drying and reducing.
Embodiment 2
[0025] 27 g γ-Al 2 o 3 and 3 grams of α-Al 2 o 3 powder mixed with PdCl 2 The Pd / alumina catalyst (catalyst A2) was prepared by impregnating with an aqueous solution (w(Pd)=0.3%), drying and reducing.
Embodiment 3
[0027] 27 g γ-Al 2 o 3 and 3 grams of α-Al 2 o 3 powder mixed with PdCl 2 The Pd / alumina catalyst (catalyst A3) was prepared by impregnating in an aqueous solution (w(Pd)=0.5%), drying and reducing.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for preparing cyclohexanone by phenol hydrogenation. The method comprises the step as follows: raw material phenol makes contact with a catalyst to prepare cyclohexanone under a hydrogen reaction condition, wherein the catalyst contains 95wt%-99.9wt% of a carrier and 0.1wt%-5wt% of Pd in terms of total weight of the carrier and Pd; and the carrier contains aluminum oxide in at least two crystal forms, wherein the content of gamma-Al2O3 is 60wt%-99wt% in terms of total weight of the carrier and Pd. The method can be applied to industrial production of preparation of cyclohexanone by phenol hydrogenation.
Description
technical field [0001] The invention relates to a method for preparing cyclohexanone by hydrogenating phenol. Background technique [0002] Cyclohexanone is an important organic chemical raw material for synthetic fiber nylon 6 and nylon 66 monomer caprolactam and adipic acid, and it is also widely used in the fields of medicine, coatings and dyes. [0003] Cyclohexane oxidation is the most commonly used chemical process at home and abroad, but this process has problems such as low conversion rate of cyclohexane, low selectivity of cyclohexanone, serious three wastes in the process, low catalyst utilization rate and difficult separation. The phenol hydrogenation method has the advantages of short production process, high yield of cyclohexanone, and stable technology, and this process is safer than the cyclohexane oxidation method, which has made this method more competitive in recent years. The process of preparing cyclohexanone by gas-phase hydrogenation of phenol is an ef...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/00C07C49/403
CPCC07C45/006C07C2601/14C07C49/403
Inventor 尤陈佳王高伟高焕新
Owner CHINA PETROLEUM & CHEM CORP
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
