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Method for preparing aromatic hydrocarbons by aromatization of alcohol compounds

An aromatization and compound technology, applied in the field of aromatization of alcohol compounds to produce aromatics

Active Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the aromatization of C-pentaols and C-hexaols to aromatics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, the share ratio of metal oxide is 3 / 97, charged into the fixed bed reactor. The reaction substrate is 1-butanol, and the weight space velocity is 0.5 hours -1 , hydrogen pressure 1.0MPa, flow rate 20ml min -1 , temperature 450°C. After the reaction, the qualitative analysis of the reaction results was carried out by mass spectrometry, and the quantitative analysis of the reaction results was carried out by chromatography. The conversion rate of the reaction substrate was 97%, and the selectivity of BTX was 88%.

Embodiment 2

[0022] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, the share ratio of metal oxide is 5 / 95, charged into the fixed bed reactor. The reaction substrate is 2-butanol, and the weight space velocity is 1.0 hours -1 , hydrogen pressure 1.0MPa, flow 50ml min -1 , temperature 400°C. After the reaction, the qualitative analysis of the reaction results was carried out by mass spectrometry, and the quantitative analysis of the reaction results was carried out by chromatography. The reaction substrate conversion rate is 90%, and the selectivity of BTX is 93%.

Embodiment 3

[0024] Liquid-phase reforming of glucose to prepare amyl alcohol: 5 grams of PtRe / C catalyst prepared by impregnation method was loaded in a fixed-bed reactor, the metal content in the catalyst was 5%, and the ratio of Pt and Re was 50:50. Raise the temperature of the reactor, keep it at 350°C for 2 hours in a hydrogen atmosphere, then cool down to 210°C, and keep the weight space velocity in a nitrogen atmosphere for 1h -1 Add 40% concentration of glucose aqueous solution under the conditions of the liquid phase reforming reaction. After the raw material passes through the catalyst bed, the product flow is cooled and collected, and the oil phase in the upper layer is analyzed and characterized to identify the main product as 2-pentanol. The reaction conversion rate was 99%, and the selectivity of pentanol was 85%.

[0025] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 The catalyst, the share ratio of metal oxide is 20 / 80, is loaded ...

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PUM

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Abstract

The invention relates to a method for preparing aromatic hydrocarbons by aromatization of alcohol compounds. Under aromatization conditions, C4-6 alcohol is in contact with a catalyst to generate an aromatic hydrocarbon stream containing benzene, toluene and xylene; the catalyst is selected from composite zirconium oxide XaOb / ZrO2, wherein x is at one kind of compounds selected from tungsten, molybdenum, cerium, lanthanum or manganese, a and b are chemical metering numbers; and in the composite zirconium oxide, in parts by weight, the use amount of XaOb is 0.1-40 parts, and the use amount of ZrO2 is 60-99.9 parts. The method can be used in the field of non-fossil resource aromatic hydrocarbon preparation.

Description

technical field [0001] The invention relates to a method for preparing aromatic hydrocarbons through aromatization of alcohol compounds. Background technique [0002] Biomass is a renewable resource that exists widely in nature, and it is carbon-neutral and environmentally friendly. The annual global biomass production is about 200 billion tons, with abundant reserves, wide sources, and cheap and easy access. The preparation of widely used aromatic products from renewable biomass resources has attracted extensive attention from the scientific and industrial circles. [0003] Cellulose and hemicellulose are one of the main components of biomass, and their internal structural units are five-carbon sugars and six-carbon sugars, such as glucose and fructose. Starting from five-carbon sugars and six-carbon sugars, carbon pentaols and carbon hexanols can be obtained through reforming and other steps, both of which are used in the field of medicine and the perfume industry. On t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C15/04C07C15/06C07C15/08
Inventor 宋奇郑均林孔德金徐旋姜向东
Owner CHINA PETROLEUM & CHEM CORP