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Evonik and LIKAT discover new type of hydroformylation

15. September 2022
in Chemicals
Evonik and LIKAT discover new type of hydroformylation

A research team involv­ing Evonik and the Leib­niz Insti­tute for Catal­y­sis (LIKAT) has made anoth­er break­through in the field of hydro­formy­la­tion. Hydro­formy­la­tion is one of the most impor­tant reac­tions in indus­tri­al organ­ic chem­istry. Unsat­u­rat­ed com­pounds are con­vert­ed into alde­hy­des and alco­hols using syn­the­sis gas.

 

Until recent­ly, the sci­en­tif­ic con­sen­sus was that this reac­tion, if cat­alyzed with cobalt, could only be car­ried out under high pres­sure con­di­tions with­out the cat­a­lyst decom­pos­ing. This was dis­proved by Pro­fes­sor Dr. Robert Franke, head of hydro­formy­la­tion research at Evonik, togeth­er with research part­ners from LIKAT, Dr. Baox­in Zhang and Dr. Christoph Kubis.

 

 “With this dis­cov­ery, we have iden­ti­fied new process options for hydro­formy­la­tion,” says Franke, who is also a pro­fes­sor of chem­istry at Ruhr Uni­ver­si­ty in Bochum. “In the future, it may be pos­si­ble to make this large-scale reac­tion much more eco­nom­i­cal and envi­ron­men­tal­ly friend­ly. Devel­op­ing these process­es will be our task for the next few years.”

 

The researchers suc­ceed­ed in demon­strat­ing, for the first time, that cobalt car­bonyls — very inex­pen­sive com­pounds for the catal­y­sis of hydro­formy­la­tion — are active and sta­ble even at low pres­sures. The key to this dis­cov­ery was the devel­op­ment of spe­cial spec­tro­scop­ic mea­sure­ment meth­ods and asso­ci­at­ed math­e­mat­i­cal tools for data evaluation.

 

High-pres­sure process­es that use cobalt car­bonyls as cat­a­lysts could be replaced in the future by new process­es with low­er pres­sures. These new process­es would then be more cost-effec­tive, ener­gy-effi­cient and thus more sus­tain­able. At Evonik, this would have an impact on the pro­duc­tion of long-chain alco­hols such as the oxo alco­hol isononanol (INA), which is used, among oth­er things, to man­u­fac­ture plasticizers.

 

Due to the par­tic­u­lar impor­tance of this dis­cov­ery, the renowned jour­nal Sci­ence pub­lished the results of the project. This is Pro­fes­sor Dr. Robert Franke’s sec­ond appear­ance in Sci­ence on car­bony­la­tion reac­tions. In 2020, Franke suc­ceed­ed in a so-called ‘dream reac­tion’: the direct car­bony­la­tion of 1,3‑butadiene. This dis­cov­ery was also wor­thy of pub­li­ca­tion in the journal.

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