Process for the production of indene

Process for the preparation of indenes

Preparation of an indene by reacting an indanone with hydrogen (H2) is carried out in the presence of a catalyst containing oxide(s), preferably metal oxide(s). Also claimed is the use of this type of catalyst in the preparation of an indene.

Process for converting an organic compound in presence of a supported ruthenium catalyst

Organic compounds are reacted in presence of a catalyst containing 0.01-30 wt% ruthenium (Ru) as active metal, possibly together with sub-group I, VII or VIII metal(s), on a support (I) with an average pore diameter (PD) of at least 50 nm and a BET surface of not more than 30 m<2>/g, in which the ratio of active metal surface to support surface is less than 0.05. Also claimed are supported catalysts as above.

Process for the preparation of halobenzaldehydes

Raney metallic fixed bed catalyst, process for preparing the same and process for hydrogenating polymers using this catalyst

Activated metal powder free macroporous metal fixed bed Raney catalyst comprises an alloy of Al and a group VIII metal and has a macroporous content of more than 80 vol.%. Also claimed are: (i) the preparation of the catalyst by forming a mastic mass containing the alloy, a deformation medium, water and a pore builder comprising a water-miscible polymer of mol. wt. 6000-500,000, moulding, calcining and treating with an alkali metal hydroxide; (ii) preliminary materials used for a catalyst as above; and (iii) the hydrogenation of polymers using the above catalyst. Preferably the polymer contains a groups(s) from carbon-carbon double and triple bonds, C-N double and triple bonds, nitro and aromatic groups and/or halogen atoms, preferably at least one C-N triple bond.

Process for the reaction of an organic compound in the presence of a supported ruthenium catalyst

Method for producing maleic acid anhydride

IN A PROCESS FOR PREPARING MALEIC ANHYDRIDE BY HETEROGENEOUSLY CATALYZED GAS-PHASE OXIDATION OF HYDROCARBONS HAVING AT LEAST FOUR CARBON ATOMS USING OXYGEN-CONTAINING GASES IN THE PRESENCE OF A VOLATILE PHOSPHORUS COMPOUND OVER A CATALYST COMPRISING VANADIUM, PHOSPHORUS AND OXYGEN IN A SHELL-AND-TUBE REACTOR UNIT (2) HAVING AT LEAST TWO SUCCESSIVE COOLED REACTION ZONES, THE TEMPERATURE OF THE FIRST REACTION ZONE IS FROM 350 TO 450°C. AND THE TEMPERATURE OF THE SECOND AND FURTHER REACTION ZONES IS FROM 350 TO 480°C. AND THE TEMPERATURE DIFFERENCE BETWEEN THE HOTTEST REACTION ZONE AND THE COOLEST REACTION ZONE IS AT LEAST 2°C.(FIG 1A)

PROCEDURE FOR PREPARING ALDEHYDES BY CATALYTIC HYDROGENATION IN THE GASEOUS PHASE OF CARBOXYLIC ACIDS OR THEIR DERIVATIVES WITH THE HELP OF A TIN CATALYST.

The prodn. of aldehydes (I) comprises catalytically hydrogenating a carboxylic acid or deriv. (II) in the gas phase at elevated temp. in the presence of a Sn catalyst supported on an oxide carrier.

Verfahren zur herstellung von aldehyden durch katalytische gasphasenhydrierung von carbonsäuren oder ihre derivate mit hilfe eines zinnkatalysators