Societa' Italiana Resine S.i.r. S.p.a.

Euteco Impianti S.p.a.

Societa' Italiana Resine S.p.a.

Giancarlo Aglietti

Ferdinando Ligorati

Roberto Canavesi

Natale Ferlazzo

Giambattista Antonelli

Vittorio Emanuele Nova

Roberto Ghezzi

A process is described for the preparation of catalysts based on molybdenum and iron oxides which comprises their controlled precipitation in an aqueous medium from sodium molybdate and a soluble ferric salt, the separation and the washing of the precipitate until its sodium content is reduced to less than 150 ppm. According to one embodiment, the sodium molybdate used as the reagent results from the action of aqueous sodium hydroxide on the spent catalyst.

Process for the preparation of catalysts based on iron and molybdenum

An oxychlorination catalyst active in the production of dichloroethane from ethylene, hydrogen chloride and oxygen, consisting of copper chloride on a granular support consisting of alumina in the crystallographic form eta, having a total volume of pores of from 0.3 to 0.5 ml/g and a surface area of from 250 to 400 m.sup.2 /g with at least 90% of said volume attributable to pores with a radius of less than 40 A and at least 90% of said surface area attributable to pores with a radius of less than 30 A.

Process and catalyst for the production of dichloroethane

0-cresol and 2,6-xylenol are prepared by flowing a gaseous stream of methanol and phenol in a molar ratio of phenol to methanol of from 1:1 to 1:9 through a fluidized bed of alumina particles at a temperature of from 200.degree. to 400.degree. C., said alumina being in the eta, gamma or chi crystallographic form, having a surface area of from 100 to 500 m.sup.2 /g and an overall pore volume of from 0.3 to 0.6 ml/g and having been pre-treated with a stream of air or inert gas at a temperature of the order of 500.degree. C. for at least 2 hours.

Process for the preparation of o-cresol and 2,6-xylenol

Process for the production of 2,2-(4,4'-dihydroxydiphenyl) propane comprising reacting phenol with acetone in a molar ratio of at least 2:1 but not exceeding 10:1 in the presence of an acidic agent at a temperature not exceeding 80.degree. C. to substantially complete reaction of the acetone, separating the acidic agent from the reaction product, bringing the product freed from acidic agent into contact with a material chosen from between activated carbon and active earths at a temperature in the range of from about 60.degree. to 120.degree. C. for a time in the range of from about 1 to 120 minutes and distilling the product obtained in the treatment with the active material to recover the 2,2-(4,4'-dihydroxydiphenyl-propane.

Process for the production of 2,2-(4,4'-dihydroxydiphenyl)propane

Ethylene oxide is prepared by oxidation of ethylene on a catalyst obtained by:

Catalytic process for preparing ethylene oxide by oxidation of ethylene

Silver-based catalysts suitable for the production of ethylene oxide are prepared by impregnating a granular support with a decomposable silver salt, drying the impregnated products, and finally heat-treating the dried product at a high temperature, in a gaseous atmosphere containing at least 1 % by volume of carbon dioxide.

Process for the production of silver-based catalysts suitable for the

A process for the production of 2,2-(4,4'-dihydroxydiphenyl)propane (bisphenol A) of high purity of condensation of phenol with acetone in the presence of strong acids, which comprises

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Milan, Italy

Giancarlo Aglietti