OP-II-3

PP-I-18DEVELOPMENT OF NEW GENERATION OF CATALYSTS ON FIBERGLASS WOVEN SUPPORT FOR RAW STYRENE PURIFICATIONFROM PHENYL-ACETILENE IMPURITIES BY SELECTIVEHYDROGENATION METHODDorokhov V.G.*, Barelko V.V.*, Bykov L.A.*, Basimova R.A.**,Pavlov M.L.**, Askarova A.V.***Institute of Problems of Chemical Physics RAS, Chernogolovka, Russia**Salavatnefteorgsintez Public Corporation, Salavat, RussiaE-mail: lbik@icp.ac.ruThe work was aimed at the analysis of efficiency of the developed by the authorsnew catalysts on fiber glass woven base in processes of purification of raw styrenefrom phenyl-acetylene by selective hydrogenation of the impurity.It was found from the tests that such type catalysts activated by noble metals arenew perspective materials in both technological realization of the process and itsreactor design. The analysis of related publications and patents justified the noveltyof the catalysts proposed for technology of purification of the styrene fraction.The experiments were performed using the sample of raw styrene fraction takenfrom Salavatnefteorgsintez Public Corporation.The composition of the sample of raw styrene fraction was the following:ethylbenzene 37.108 %styrene 59.505 %phenylacetylene 0,0072 %The starting mixture was hydrogenated in a pilot reactor with vibration stirring inconditions of mass loading of the catalyst in liquid medium of the hydrogenatedfraction at 25°С and 1 atm pressure of hydrogen. The process was realized onspecially prepared catalysts using silica glass woven supports (96% of SiO 2 ).All the catalysts used in the experiments were not pre-activated by hydrogen priorto hydrogenation. The ratio of the mass of the loaded catalyst to the volume ofhydrogenated medium was ~ 0,03.The following catalysts were prepared and tested:Sample 1: Pd on silica grid, Pd content was ~ 0.15 wt.% .Sample 2. Pd on silica grid, Pd content was ~ 0.15 wt.%, and copper was added;Pd : Cu = 4.2 :1.Sample 3. The platinated catalyst on on silica grid, Pt content was ~ 0.1 – 0.2 wt.%.252