The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Oct. 26, 2005
Daniele Bianchi, Arese-Milano, IT;
Rossella Bortolo, Novara, IT;
Chiara Busto, Trecate-Novara, IT;
Carla Lazzari, Cornaredo-Milano, IT;
Daniele Bianchi, Arese-Milano, IT;
Rossella Bortolo, Novara, IT;
Chiara Busto, Trecate-Novara, IT;
Carla Lazzari, Cornaredo-Milano, IT;
Polimeri Europa S.p.A., Brindisi, IT;
Abstract
The invention relates to a continuous process for the preparation of phenol by means of the direct oxidation of benzene with hydrogen peroxide in the presence of a catalyst based on titanium silicalite TS-1 comprising: (a) running the process in a fixed bed reactor containing the catalyst based on TS-1 at a temperature ranging from 80-120° C. and at a pressure ranging from 3-15 atm; (b) feeding to the reactor a stream containing HO, benzene, sulfolane and water in a single or double phase, wherein the quantities of the single components are within the range of 0.2-6, 15-60, 30-80, 0.5-30 parts by weight, respectively, for every 100 units fed and whose total flow rate is calculated so that the residence time in the reactor (defined as the ratio between the quantity of catalyst by weight and the feeding flow rate) ranges from 0.3 to 2 min; (c) recovery of the products, by-products and solvent from the liquid stream leaving the reactor.