Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for synthesizing phenylethane from ethanol

A technology for synthesizing ethylbenzene and ethanol, which is applied in the direction of hydrocarbon addition of unsaturated hydrocarbons and saturated hydrocarbons, bulk chemical production, organic chemistry, etc., can solve the problems that ethanol needs to be further improved, and avoid side reactions, general Good adaptability and the effect of improving the conversion rate

Active Publication Date: 2012-03-21
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And, as can be seen from the disclosed embodiment of US4232179, the conversion rate of the ethanol of this method also needs to further improve

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for synthesizing phenylethane from ethanol
  • Method for synthesizing phenylethane from ethanol
  • Method for synthesizing phenylethane from ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] This embodiment is used to illustrate the method for synthesizing ethylbenzene from ethanol according to the present invention.

[0076] (1) Preparation of ethylene

[0077] According to the method disclosed in CN1308019A, the MgAPSO molecular sieve with CHA structure is synthesized as an active component. The molecular sieve contains 3.2% by weight of Mg, and aluminum oxide is used as a binder to shape the molecular sieve into a round bar shape, wherein 100 parts by weight of MgAPSO Molecular sieve is used as a reference, and the amount of alumina is 20 parts by weight.

[0078] The ethanol dehydration reaction unit includes three fixed-bed reactors connected in series, and the catalysts are respectively loaded into each fixed-bed reactor, and each reactor is provided with a catalyst bed, and the packing height of each catalyst bed is 1.2 meters, stacked The density is 0.56 g / ml, the inlet temperature of the three reactors is 350° C., and the outlet pressure of the th...

Embodiment 2

[0086] This embodiment is used to illustrate the method for synthesizing ethylbenzene from ethanol according to the present invention.

[0087] (1) Preparation of solid acid dehydration catalyst

[0088] Ti-containing TAPSO molecular sieves with RHO structure were synthesized as active components by the following method:

[0089] First put 150 grams of deionized water in a beaker in a water bath at 50°C, and after stirring at a constant speed for 30 minutes, slowly add a mixture of 34 grams of tetra-n-butyl titanate and 30 grams of absolute ethanol dropwise into the water to make it hydrolysis. Then 184.5 grams of phosphoric acid and 630 grams of deionized water were added to the gelling kettle placed in a water bath of 50°C and mixed and stirred for 30 minutes, adding 145.7 grams of hydrated aluminum oxide (the content of aluminum oxide was 70% by weight), and continued to stir for 2 After one hour, add 43 grams of molecular sieve seed crystals (the SAPO molecular sieve of ...

Embodiment 3

[0103] This embodiment is used to illustrate the method for synthesizing ethylbenzene from ethanol according to the present invention.

[0104] (1) Preparation of ethylene

[0105] The Ti-containing TAPSO molecular sieve with the RHO structure synthesized by the same method as in Example 2 is used as an active component, the molecular sieve contains 2.9% by weight of Ti, and aluminum oxide is used as a binding agent, and the molecular sieve is formed into a round bar shape, wherein, Based on 100 parts by weight of molecular sieve, the amount of alumina used is 10 parts by weight.

[0106] The ethanol dehydration reaction unit includes two fixed-bed reactors connected in series, and the catalysts are respectively loaded into each fixed-bed reactor, and each reactor is provided with a catalyst bed, and the height of each catalyst bed is 1.5 meters, and the bulk density is 0.61, the inlet temperature of the two reactors is 400° C., and the outlet pressure of the second reactor i...

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

PropertyMeasurementUnit
heightaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for synthesizing phenylethane from ethanol. The method includes steps that under the condition of dehydrating alcohol, reaction gas containing the ethanol contacts with solid acid dehydration catalyst to obtain a first product containing ethylene, and under the condition of aromatic hydrocarbon alkylation and by the aid of solid acid alkylation catalyst, benzene contacts with the first product to obtain a second product containing phenylethane. The reaction gas containing alcohol contacts with the solid acid dehydration catalyst under pressure of 1-100kPa by the aid of an absolute manometer. When the method is used for preparing phenylethane from alcohol, conversion rate of the alcohol can reach 100%, and selectivity of the phenylethane can be 99% at least. In addition, the alcohol used as raw materials and the catalysts are not specifically limited according to the method, and accordingly, the method is better in universality.

Description

technical field [0001] The invention relates to a method for synthesizing ethylbenzene from ethanol. Background technique [0002] Ethylbenzene is the raw material for the production of styrene, and styrene is an important chemical raw material for the production of polystyrene, styrene-butadiene rubber and ABS resin. Ethylbenzene is mainly produced by the alkylation of benzene with ethylene. At present, ethylene is mainly produced by steam pyrolysis of light oil. However, due to the increasing shortage of petroleum resources and the rapid development of ethylene derivative industries such as chemical industry, energy and materials, the demand for ethylene continues to increase. Therefore, finding other resources to produce ethylene and then ethylbenzene is becoming a topic of widespread concern. [0003] The production of ethylene from ethanol dehydration is the main ethylene production technology before the technology of hydrocarbon thermal cracking to produce ethylene. ...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C15/073C07C2/70
CPCY02P20/52
Inventor 张凤美李黎声王卫东秦凤明许吓清
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com