Enhancement of the stability of micro porous silica films in non-aqueous solvents at elevated temperatures

E.V. Rebrov, O. Muraza, M.H.J.M. Croon, de, J.C. Schouten

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

The long-order structure of micro porous silica thin films, deposited on Si substrates was improved by pH adjustment of the synthesis mixture to 2.0 during the hydrolysis of TEOS. It was further improved by incorporation of Al at an Al/Si ratio of 0.005. After exposure to non-polar solvents, the long-order structure was still present after 48 hours. The samples with an Al/Si ratio of 0.007 showed the smallest d-spacing shift after exposure to hexane. The stability was tested in the hydrogenation of phenyl acetylene perfonued over 1 wt% Pd/Si(Al)02/Si (A1/Si=0.007) films at 30 ‘C and 10 bar H2 with hexane as solvent. No deactivation was observed in two subsequent hydrogenation runs.
Originele taal-2Engels
TitelEuropaCat IX, Catalysis for a Sustainable World : 30th August - 4th September 2009, Salamanca, Spain : abstracts
Pagina'sP10-40-
StatusGepubliceerd - 2009
Evenementconference; EuropaCat IX : Catalysis for a sustainable world; 2009-08-30; 2009-09-04 -
Duur: 30 aug 20094 sep 2009

Congres

Congresconference; EuropaCat IX : Catalysis for a sustainable world; 2009-08-30; 2009-09-04
Periode30/08/094/09/09
AnderEuropaCat IX : Catalysis for a sustainable world

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