Process for the purification of benzaldehyde

Details Process for the purification of benzaldehyde Process for the purification of benzaldehyde

1980-02-28

1981-08-25

Sever, Frank

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

568425, 568438, B01D 334

Patent

active

042857775

ABSTRACT:
A process for purification of impure benzaldehyde by which purified benzaldehyde is prepared which has improved color stability and improved olfactory characteristics. The process is comprised of the steps of treatment with hydrogen in the presence of a hydrogenation catalyst followed by distillation.
The present invention is a new and novel process for the purification of benzaldehyde and, is in particular, a unique and novel process for the purification of benzaldehyde prepared by the oxidation of toluene with a gas containing molecular oxygen.

REFERENCES:
patent: 2856332 (1958-10-01), Mertzweiller
patent: 3379768 (1968-04-01), Corson et al.

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