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Strategies on reduction of side reactions for selective hydrogenation of oxo-aldehydes – Catalyst characterisation and regeneration

Title data

Reinsdorf, Arne ; Korth, Wolfgang ; Jess, Andreas:
Strategies on reduction of side reactions for selective hydrogenation of oxo-aldehydes – Catalyst characterisation and regeneration.
2015
Event: ESCRE 2015 - European Symposium on Chemical Reaction Engineering , 27.-30.10.2015 , Fürstenfeldbruck, Deutschland.
(Conference item: Conference , Poster )

Abstract in another language

Oxo-alcohols are amongst the most important raw materials for the production of high volume plasticizers in chemical industry. C6 – C12 aldehydes from hydroformylation are hydrogenated on suitable heterogeneous catalysts to gain those alcohols which are further processed to the corresponding plasticizers. During hydrogenation the formation side components like ester, acetal or other high boiling components has a major influence on the product quality. The influence of process control, feed quality and catalyst properties on side reactions is only sporadically described in literature. Against the background of the high economical potential of an increased alcohol yield and higher catalyst lifetime the formation of side components was investigated under hydrogenation conditions close to the industrial process. Nonyl aldehyde was chosen as model substance feed. Reaction products were analyzed by means of GC / GC-MS measurements. The catalyst was characterized via TEM, EDX, XRD and BET. Regenerations experiments for deactivated catalyst were conducted based on hermogravimetric analysis. The catalyst was treated at two different temperatures under either nitrogen or controlled oxygen atmosphere. Subsequent hydrogenation showed a fully restored catalyst activity. Based on the conducted experiments guidelines where formulated to ensure lower influence of high boiling side components that lead to higher catalyst stability and yields in the production of plasticizer alcohols. On the basis of the derived experimental data a procedure for the regeneration of
deactivated catalyst was described.

Further data

Item Type: Conference item (Poster)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 05 Nov 2015 10:00
Last Modified: 05 Nov 2015 10:00
URI: https://eref.uni-bayreuth.de/id/eprint/21242