Economical production of 2-propylheptanol
A technology of propyl and heptanol, applied in the field of preparation of 2-propyl heptanol, can solve problems such as few synthesis steps
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Embodiment 1
[0075] Example 1: Hydroformylation with a ligand (7) not according to the invention
[0076] The non-inventive ligands of the formula (7) known from EP 2 280 920 B1 are used in the hydroformylation of butene / butane mixtures. Here, the ligand (7) was stabilized with bis-4-(2,2,6,6-tetramethylpiperidinyl) sebacate.
[0077] The continuously operated experimental setup mainly consisted of a pressure reactor with a capacity of 20 liters and a cycle gas compressor with a downstream connected condenser and a phase separation vessel for the gaseous phase produced from the reactor (gas / liquid), the recycle gas compressor conveys the gas phase from the phase separation vessel down again back into the reaction zone. A part of this recycle gas is discharged from the reaction system as tail gas after the phase separation. In order to achieve optimum gas distribution in the reactor system, gas distributor rings with perforations are installed here. The reactor is temperature-adjustable...
Embodiment 2
[0087] Example 2: Hydroformylation with ligands (1) according to the invention
[0088] The same experimental setup as in Example 1 was used; see FIG. 0 . The same feed mixture and the same synthesis gas were used. However, organophosphorus compounds according to formula (1) are used as ligands. The ligand of formula (7) known from EP2280920B1 is absent in the reaction mixture. The same Tinuvin 770DF as in Comparative Example 1 was used as a stabilizer.
[0089] Prior to the hydroformylation, the system was flushed with nitrogen to free it from oxygen. The reactor is then filled with catalyst solution. This catalyst solution consists of 12kg INB(CAS 670241-72-2), 4.5g Rh(acac)(CO) 2 , 46.2 g of bisphosphite ligand of formula (1), 49.2 g of Tinuvin 770DF and premixed in a container. make said The INB is pre-stripped with nitrogen to remove oxygen and water therefrom.
[0090] Subsequently, the reactor system was flushed with synthesis gas to free it from nitrogen. ...
Embodiment 3
[0099] Example 3: Hydroformylation with a ligand (5) not according to the invention
[0100] The non-inventive ligands of the formula (5) known from EP2802550B1 are used in the hydroformylation of butene / butane mixtures. Here, the ligand (5) was stabilized with bis-4-(2,2,6,6-tetramethylpiperidinyl) sebacate.
[0101] The experimental setup shown in Figure 0 and also used in Examples 1 and 2 was used again.
[0102] Prior to the hydroformylation, the system was flushed with nitrogen to free it from oxygen. The reactor is then filled with catalyst solution.
[0103] This catalyst solution consists of 12kg INB(CAS 670241-72-2), 4.5g Rh(acac)(CO) 2 , 47.1 g of bisphosphite ligand of formula (5), 50.4 g of Tinuvin 770DF, and premixed in a container. make said The INB is pre-stripped with nitrogen to remove oxygen and water therefrom.
[0104] Subsequently, the reactor system was flushed with synthesis gas to free it from nitrogen. Once the nitrogen content dropped below ...
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