Процесс получения метилэтилкетона
Patents
| Language: |
Русский |
| Type: |
Patent request |
| Number |
WO 2007055608 A3 |
| Request number: |
PCT/RU2005/000551 |
| Request date: |
Nov 8, 2005 |
| patent.field.start_date: |
|
| Registration date: |
|
| patent.field.request_publication_date: |
May 18, 2007 |
| Authors |
Алдошин С.М.
,
Матковский П.Е.
,
Руссиян Л.Н.
,
Троицкий В.Н.
,
Пармон В.Н.
,
Пай З.П.
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
| 2 |
Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS
|
|
The invention relates to basic organic synthesis, in particular to a two-stage process for producing methyl-ethyl ketone (MEK). Said method comprises of two stages consisting in producing n-butenes by catalytically dimerising ethylene and in catalytically oxidising said n-butenes by nitrogen oxide (I) The ethylene dimerisation is carried under a catalytical system action comprising titanium alkoxide of general formula Ti(OR)n and an aluminium organic compound of general formula AlR3 in a simple ether or tetrahydrofuran medium at concentrations of Ti(OR)n = (0.2 ÷2.0)×10-3 M. molar ratios Al/Ti=6-150, T=20-150 °C, P ethylene 0.1-4.0 MPa in eballated or tubular-and-slotted reactors in the absence or presence of hydrogen. The n-butene catalytical oxidising in MEK is carried out by nitrogen oxide (I) in a liquid phase with a temperature ranging from 20 to 150 °C at a total pressure of a gas mixture of 0.1-0.35 MPa in the presence of catalysts based on peroxopolyoxo metallate complexes-tetrakis-(oxo diperoxo metallate)- phosphate(3-) in combination with ammonium quaternary cations of general formula (II), wherein Me-Mo, W,V; Q3 is an ammonium quaternary cation containing alkyl chains C4-C8 or N-hexadecylpyridinium.