Council of Scientific and Industrial Research

Raghunath Vittal Chaudhari

Ashutosh Anant Kelkar

Vilas Hari Rane

Raj Madhukar Deshpande

Sunil Sadashiv Divekar

Rengaswamy Jaganathan

Makarand M Diwakar

Devidas S Kolhe

Amit Arwind Deshmukh

The present invention provides an improved process for the liquid phase oxidation of toluene to benzaldehyde with high selectivity and good activity in an organic acid medium using a catalyst system consisting of transition metal/metals and bromide as a promoter in the presence of lean oxygen.

Selective liquid phase oxidation of toluene to benzaldehyde

The present invention provides an improved process for the synthesis of &#x3b1;-substituted acroleins from olefins by a tandem hydroformylation and Mannich reaction sequence in the presence of syngas and formaldehyde, wherein the two catalysts are segregated into two different phases thereby preventing deactivation of the catalysts by each other, and yielding a highly selective and active catalyst.

Process for the synthesis of &#x3b1;-substituted acroleins

The present invention provides a process for the preparation of an improved nickel-containing catalyst suitable for the conversion of alcohols to the corresponding carboxylic acid which involves combining a nickel compound, an N-containing organic compound and an iodine promoter, bringing the combination in contact with an alcohol in the presence of carbon monoxide and subjecting the mixture to a temperature and pressure sufficient to initiate carbonylation of the alcohol. The process is characterized in that the N-containing organic compound is isoquinoline or a derivative thereof.

Preparation of improved nickel-containing catalyst and process for

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Pune, India

Raghunath Vittal Chaudhari