Euteco, S.p.a.

Societa Italiana Resine

Lucio Di Fiore

Giuseppe Messina

Marcello Ghirga

Benedetto Calcagno

Loreno Lorenzoni

Luciano Cairati

Process for the preparation of alkylbenzenes by partial chlorination of linear C.sub.9 -C.sub.15 paraffins, catalytic alkylation of benzene with the resulting mixture and fractionation by distillation of the alkylation products. At least a part of the unreacted paraffins recovered by fractionation and to be recycled to the chlorination stage is submitted, continuously or intermittently, to a purification treatment with molecular sieves. The content in undesired by-products of the alkylbenzenes can thus be maintained at negligibly low values.

Preparation of linear alkylbenzenes

Catalyst for the oxidation of methanol to formaldehyde usable in the fluidized form in said oxidation, comprising iron and molybdenum oxides on a granular support, said support being a silica or an alumina having a specific surface area not exceeding 1 m.sup.2 /g and an overall pore volume not exceeding 0.2 ml/g and said oxides being present in the catalyst in an amount not exceeding 2 parts by weight for each 100 parts by weight of the support and in an atomic ratio between molybdenum and iron of from 1.5:1 to about 2.5:1.

Catalyst for the oxidation of methanol to formaldehyde and a method of

Liquid-phase chlorination of n-paraffins is improved as to yield on chlorine and as to restriction to mono-substitution by passing the paraffins up a reactor divided into stages by baffles and feeding chlorine in controlled amounts to each stage.

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Milan, Italy

Lucio Di Fiore