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Method for dehydrating ethanol

A technology of ethanol dehydration and ethanol aqueous solution, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, hydrocarbon production from oxygen-containing organic compounds, etc., can solve the problem of high reaction temperature, low catalyst activity and stable Sexual issues, etc.

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that there are problems of high reaction temperature, low catalyst activity or poor stability in the prior art, and a new ethanol dehydration method is provided

Method used

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  • Method for dehydrating ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 6.2 g of Zr(NO 3 ) 4 ·5H 2 O was dissolved in 208 grams of deionized water, and after the dissolution was complete, 16 grams of cetyltrimethylammonium bromide (CTAB) was added, fully stirred to dissolve it, and after the solution was clarified, 80 grams of ethyl orthosilicate was added, Zr: Si: CTAB (mole) = 1: 24.5: 3, under stirring conditions, add concentrated ammonia water dropwise to pH = 10, continue to stir for 2 hours, age for 12 hours, filter the sample and wash it with deionized water until there is no impurity ion Dry at 100°C to obtain mesoporous ZrO 2 -SiO 2 carrier.

Embodiment 2

[0021] Press each step and condition of [embodiment 1], just use ZrOCl 2 , silica sol, polyoxypropylene polyoxyethylene copolymer (P123), make Zr: Si: P123 (mol) = 1: 11.3: 0.5, aging for 24 hours.

Embodiment 3

[0023] Press each step and condition of [embodiment 1], just use ZrOCl 2 , water glass, P123, make Zr: Si: P123 (mol) = 1: 27.6: 1, aging for 24 hours.

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Abstract

The invention relates to a method for dehydrating ethanol, which mainly solves the problems of high reaction temperature and low catalyst activity or poor stability in the prior art. The method adopts the following technical scheme that: 5 to 100 weight percent ethanol aqueous solution is adopted as a raw material, and under the condition that the reaction temperature is between 200 and 450 DEG Cand the volume space velocity relative to the ethanol is 0.1 to 15 per hour, the reaction raw material contacts a catalyst to generate ethylene, wherein the catalyst is WO3 / ZrO2-SiO2 or MoO3 / ZrO2-SiO2, the molar ratio of W / Mo to Zr to Si is 0.05-0.3:1:5-50. The technical scheme of the invention well solves the problems, and the method can be used in the industrial production of preparing the ethylene by dehydrating the ethanol.

Description

technical field [0001] The invention relates to a method for ethanol dehydration. Background technique [0002] As a basic organic chemical raw material and a leading product in the petrochemical industry, ethylene is known as the "mother of petrochemical industry". It is mainly used in the production of polyethylene, ethylene oxide / ethylene glycol, dichloroethane, styrene, acetic acid Chemicals such as ethylene. With the rapid development of ethylene derivative industries such as chemical industry, energy and materials, the demand for ethylene is increasing. At present, ethylene mainly comes from naphtha cracking. As petroleum resources are non-renewable and are gradually becoming exhausted, the use of renewable biomass resources to develop bioenergy and biochemical industries has become an inevitable trend of current and future economic development. Ethanol can be obtained by fermentation of plant starch or wood fiber. The source of raw materials is extensive, sufficien...

Claims

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Application Information

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IPC IPC(8): C07C11/04C07C1/24B01J23/30B01J23/28
CPCY02P20/52
Inventor 李亚男徐菁金照生周海春金萍孙兰萍黄祖娟
Owner CHINA PETROLEUM & CHEM CORP
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