Zobrazeno 1 - 10
of 45
pro vyhledávání: '"G. Stefler"'
Autor:
Andrea Beck, G. Stefler, Tímea Benkó, László Guczi, György Sáfrán, Anita Horváth, Zsolt Varga, Jeno Gubicza
Publikováno v:
The Journal of Physical Chemistry C. 115:20388-20398
Publikováno v:
Catalysis Today. 169:102-111
Ni, NiRh and NiCo catalysts supported on Ce–Zr-oxide synthesised by pseudo sol–gel method have been investigated. Monometallic samples were performed with two different Ce/Zr ratios and by conventional impregnation. BET, XPS, TPR, TPO and TEM wer
Autor:
István E. Sajó, László Guczi, G. Stefler, András Tompos, Zoltán Pászti, O. Geszti, Zoltán Schay
Publikováno v:
Applied Catalysis A: General. 375:236-246
Methane dry reforming with a mixture of 29% CO 2 and 71% CH 4 over 8 wt% NiMgAl 2 O 4 in a plug flow reactor with temperature programmed mode has been investigated. It was established that in sequential reactions the catalyst was deactivated due to g
Publikováno v:
Topics in Catalysis. 52:912-919
Au colloid and titania in different sequence or Au-oxide nano ensembles preformed in hydrosol were deposited on inert amorphous silica or mesoporous SBA-15. It was compared with gold colloid adsorbed on TiO2 or silica support. The formation of the Au
Autor:
G. Stefler, Mónika Urbán, Imre Kiricsi, Zoltán Kónya, Éva D. Molnár, O. Geszti, László Guczi, Zs. Koppány
Publikováno v:
Journal of Catalysis. 244:24-32
CO hydrogenation was investigated over Co or Fe catalysts supported on multiwall carbon nanotubes (MWNTs). Two types of catalysts were prepared. For the simple impregnation method, metal acetate precursors were deposited onto the surface of MWNTs. Th
Autor:
Andrea Beck, Antal Sárkány, O. Geszti, László Guczi, G. Stefler, Lajos Tóth, Zsolt Varga, Anita Horváth
Publikováno v:
The Journal of Physical Chemistry B. 110:15417-15425
Au-TiO(2) interface on silica support was aimed to be produced in a controlled way by use of Au hydrosol. In method A, the Au colloids were modified by hydrolysis of the water-soluble Ti(IV) bis(ammoniumlactato)dihydroxide (TALH) precursor and then a
Autor:
Andrea Beck, Dominique Bazin, G. Stefler, László Guczi, John Lynch, Krisztina Frey, O. Geszti, Zs. Koppány, István E. Sajó, Anita Horváth
Publikováno v:
Journal of Molecular Catalysis A: Chemical. :545-552
Monometallic Au, Pd and bimetallic AuPd nanoparticles were prepared from Au(III), Pd(II) precursor ions in aqueous media with reduction by a mixture of Na-citrate and tannin producing stable metal sols of narrow size distribution. The nanoparticles o
Publikováno v:
Applied Catalysis A: General. 246:79-86
CO hydrogenation over Re-Co bimetallic samples prepared by sol/gel technique have been investigated. Reduction of the Co 2+ ions in the sol/gel samples prepared by means of ethyleneglycol (SG1) and hexyleneglycol (SG5) as gelation agent could be faci
Publikováno v:
Catalysis Today. 77:237-243
Re–Co/Al 2 O 3 (M) bimetallic catalysts were prepared by ball milling in a high-energy shaker mill using a WC container and four WC balls. The structure and activity of the Re–Co/Al 2 O 3 (M) are compared to a Re–Co/Al 2 O 3 (IM) sample prepare
Autor:
John Lynch, P. Parent, Dominique Bazin, Zs. Koppány, Imre Kovács, István E. Sajó, Zoltán Schay, C. Lafon, L. Guczi, L. Borkó, G. Stefler
Publikováno v:
Topics in Catalysis. 20:129-139
Temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and in situ extended X-ray absorption fine structure (EXAFS) studies were performed to investigate Pt-Co/NaY and Pt-Co/Al2O3 bimetallic catalysts.