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Method for deoxygenation of esters

A technology for esters and ester compounds, applied in the field of hydrodeoxygenation of organic compounds, can solve the problems of combustion deactivation, expensive precious metal catalysts, etc., and achieve the effect of high conversion rate

Active Publication Date: 2016-01-06
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Catalysts currently used in the hydrogenation of esters include platinum catalysts, palladium catalysts, Raney nickel catalysts, copper chromium catalysts, hydrodesulfurization catalysts (such as: NiMo, CoMo) in the traditional petrochemical industry, etc., but precious metal catalysts are expensive, Raney nickel catalysts With high activity, it will violently react and burn inactivated in the air. The copper chromium catalyst has been banned because it contains a large amount of chromium.

Method used

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  • Method for deoxygenation of esters
  • Method for deoxygenation of esters
  • Method for deoxygenation of esters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Methyl laurate using the aforementioned H 2 S-Fe 3 o 4 Catalyst hydrogenation, under the conditions of 280°C and 320°C, hydrogen pressure of 9MPa, methyl laurate / catalyst ratio of 1 / 2 (weight), reacted for 1 hour. The conversion rate of methyl laurate was analyzed by GC-MS spectrum, and the results are shown in Table 1.

Embodiment 2

[0057] Methyl laurate using H 2 S-Fe 3 o 4 Catalyst hydrogenation, three-factor two-level experiments based on reaction temperature, pressure and time, each with four groups of experiments, hydrogenation conditions: methyl laurate / catalyst = 1 / 2 (weight), catalyst: H 2 S-Fe 3 o 4 , hydrogen environment. Carrying out methyl laurate conversion and product selectivity analysis by GC-MS spectrum (results are shown in Table 2), it can be seen that alkanes are the main products, and the longer the reaction time is, the more favorable the formation of alkanes can be. By prolonging the contact time between the catalyst and the reactants, a higher alkanes yield can be obtained at a lower reaction temperature and pressure.

[0058] Table 2. Methyl laurate conversion rate and hydrogenation product selectivity.

[0059]

Embodiment 3

[0066] Octanoic acid methyl ester (C 7 h 15 COOCH 3 ) using H 2 S-Fe 3 o 4 Catalyst hydrogenation, under the conditions of 280°C and 320°C, hydrogen pressure of 9MPa, methyl octanoate / catalyst ratio of 1 / 2 (weight), react for 1 hour. The conversion rate of octanoic acid methyl ester was analyzed by GC-MS spectrum, and the results are shown in Table 4.

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Abstract

The invention provides an ester deoxygenation method, comprising a step of sulfurating fe-oxide powder by sulfuretted hydrogen and forming a sulfuretted fe-oxide deoxygenation catalyst; and a step of taking the sulfuretted fe-oxide powder as the deoxygenation catalyst to realize the hydrodeoxygenation reaction of a ester compound under a hydrogen environment, thereby generating alkanes, aldehydes, and alcohols.

Description

technical field [0001] The present invention relates to a method for hydrodeoxygenation of organic compounds, and in particular to a method for hydrodeoxygenation of esters and its catalyst. Background technique [0002] The composition of petroleum is very complex. Its main component is a mixture of hydrocarbons, among which alkanes (including straight chain or branched), naphthenes, and aromatic hydrocarbons are more common. Gasoline (gasoline) can be extracted from crude oil, and its main component is pentane (C 5 h 12 ) to octane (octane; C 8 h 18) , diesel fuel (diesel fuel) and kerosene (kerosene), the main component of which is nonane (nonane; C 9 h 20 ) to hexadecane (hexadecane; C 16 h 34 ), and fuel oil and lubricating oil with more than cetane, and higher carbon numbers such as paraffin wax with about 25 carbons and asphalt with more than 35 carbons, etc. These substances are often recombined into more practical products through cracking. [0003] Natural...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/213C07C1/207C07C9/15C07C29/149C07C27/04C07C31/125C07C45/41C07C47/02C10G3/00B01J27/043
CPCY02P30/20
Inventor 刘琼芳陈志清游佩蓉张莹玺万皓鹏李宏台
Owner IND TECH RES INST