Ethyl vinyl ether synthesis
- Product Name:Ethyl vinyl ether
- CAS Number:109-92-2
- Molecular formula:C4H8O
- Molecular Weight:72.11
In China, three processes for the manufacture of EVE using the acetylene route were used:
A continuous process with a homogeneous catalyst under high pressure. The advantages of this process are fast reaction rate and high conversion, but the disadvantages include the requirement of high standard equipment, large energy consumption, and easy safety issues.
A process with a solid catalyst (heterogeneous catalyst) under atmospheric pressure is relatively simple in product separation and refining compared with a process with a homogeneous catalyst under high pressure. However, it has the disadvantages of low output, the short service life of catalyst (about 110 h), and a high requirement on the specification of carrier lime.
A process with a homogeneous catalyst under atmospheric pressure has the advantages of high output and good safety but disadvantages of low conversion.
In the process with solid catalyst under atmospheric pressure, acetylene, and ethanol vapor were introduced into a fixed-bed reactor, and the vinylation reaction was carried out at a temperature as high as about 180 °C. EVE was produced with a concentration of about 70% in the outlet gas stream from the reactor. The fixed-bed reactor was charged with 4–5 mesh catalyst particles of potassium hydroxide supported on lime.
111-34-2
268 suppliers
$14.00/25mL
64-17-5
857 suppliers
$10.00/50g
109-92-2
276 suppliers
$17.00/25mL
Yield:-
Reaction Conditions:
with mercury (II) acetateCooling with ice;Reflux;
Steps:
1.1-6.1
1) In a reaction flask equipped with a fractionation column (connected to a condenser, and the receiving bottle is cooled with an ice-salt bath), add absolute ethanol, mercuric acetate, n-butyl vinyl ether, heat to reflux, and control the temperature at the top of the fractionation column At 3637 , distill out ethyl vinyl ether;
References:
CN114805047,2022,A Location in patent:Paragraph 0021-0023; 0027-0029; 0033-0035; 0039-0041; ...
105-57-7
319 suppliers
$19.00/25mL
109-92-2
276 suppliers
$17.00/25mL
105-57-7
319 suppliers
$19.00/25mL
75-07-0
431 suppliers
$14.00/5mL
109-92-2
276 suppliers
$17.00/25mL
7081-78-9
4 suppliers
inquiry
109-92-2
276 suppliers
$17.00/25mL