Method for preparing C10-C18 long chain naphthenic hydrocarbon by utilizing furfural compound

A technology of C10-C18 and chain cycloalkanes, which is applied in the preparation of liquid hydrocarbon mixtures, hydrocarbons, hydrocarbons, etc., can solve the problem of serious equipment corrosion, and achieve low cost, high volumetric energy density, and simple steps Effect

Active Publication Date: 2014-09-17
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

However, they used sulfuric acid, p-toluenesulfonic acid and other highly corrosive solid acids as catalysts in this work, which caused serious corrosion to equipment

Method used

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  • Method for preparing C10-C18 long chain naphthenic hydrocarbon by utilizing furfural compound
  • Method for preparing C10-C18 long chain naphthenic hydrocarbon by utilizing furfural compound
  • Method for preparing C10-C18 long chain naphthenic hydrocarbon by utilizing furfural compound

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Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 Shown is a synthetic reaction scheme for preparing long-chain naphthenes by using biomass-based furfural derivatives and cyclic ketones in the present invention.

[0023] Table 1 lists the Knoevenagel condensation reactions between different furfural compounds and cyclic ketones, and the yields of condensation products under different catalysts and reaction conditions.

[0024] Table 1 The results of Knoevenagel condensation reaction between furfural compounds and cyclic ketones under different conditions

[0025]

[0026] Table 2 lists the impact of hydrodeoxygenation reaction on the yield of long-chain naphthenes under different catalysts and reaction conditions; the reaction is carried out in a 100ml reactor, and 20ml of water is used as the reaction solvent; the product obtained by Knoevenagel condensation is selected as the reaction raw material , the concentration of the raw material is 10% by mass percentage; the loading amount of the active ...

Embodiment 2

[0030] Using furfural and cyclopentanone as raw materials, the preparation of C 10 -C 18 Long-chain naphthenes:

[0031] (1) Knoevenagel condensation reaction: at room temperature, weigh 19.2g furfural and 8.4g cyclopentanone (the molar ratio of furfural to cyclopentanone is 2:1), put them in a 250ml three-necked flask, mix them uniformly, and then Slowly add 10ml of 1mol / L NaOH aqueous solution dropwise under the state, the reaction occurs rapidly and a large amount of yellow solid is generated, filter and wash the solid product with 5% ethanol aqueous solution, dry it in an oven at 50°C, and weigh to obtain 25.2g product. The NMR spectrum of the product is shown in the appendix figure 2 with 3 , the confirmed product is the condensation product of furfural and cyclopentanone 2,5-Bis-furan-2-ylmethylene-cyclopentanone, the structural formula is

[0032](2) Preparation of metal / solid acid catalyst: Weigh 2g of solid zirconium phosphate and add it to 10ml of 5% palladium...

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Abstract

The invention provides a method for preparing C10-C18 long chain naphthenic hydrocarbon by utilizing furfural compounds obtained from agricultural and forestry wastes. The method mainly uses furfural compounds and cyclic ketone to generate C10-C18 containing oxygen and ring organic compounds through the Knoevenagel condensation reaction, and then the hydrodeoxygenation is conducted to obtain C10 C18 long chain naphthenic hydrocarbon. The method has the advantages of high selectivity, simple steps, simple operation, easily available raw materials, mild reaction conditions, low cost, low equipment requirement and high product yield. The product is long chain naphthenic hydrocarbon with high volume energy density, and is a potential aviation kerosene and a high quality diesel component.

Description

technical field [0001] The invention relates to a preparation method of long-chain cycloalkane, which belongs to the field of chemical industry; specifically, it uses furfural compounds and cyclic ketones to prepare C 10 -C 18 A method for long-chain cycloalkanes. Background technique [0002] Long chain alkanes (C 8 -C 20 ) is an important part of existing transportation fuels such as gasoline, diesel and aviation kerosene. At present, long-chain alkanes can only be obtained from petroleum or animal and vegetable oils. Petroleum is not renewable, while the sources of animal and vegetable oils are limited and the extraction and refining process conditions are complex and harsh. [0003] Lignocellulose is a renewable carbon resource that widely exists in nature. The production of long-chain alkanes, which are in great demand, from lignocellulosic biomass is of great value to the sustainable development of human beings. Since cellulose and hemicellulose are connected by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/10C07C1/207C10G3/00C07D307/46
CPCY02P30/20
Inventor 马隆龙石宁王铁军刘琪英张琦
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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