Sector: Energy & Sustainability
Ultrasonically-Assisted Preparation and Functionalization of Graphene
Since the extraordinary characteristics of graphite and graphene are known, several methods for its preparation have been developed. Beside to chemical production of graphenes from graphene oxide in multi-step processes, for which very strong oxidizing [...]
Pd/WO3-ZrO2 catalysts: synthesis, characterization and catalytic evaluation
The present work aims at searching for new catalysts for n-heptane isomerization. Four WO3-ZrO2 oxides were prepared by varying WO3 content in 5, 10, 15 and 25 wt% using a sol-gel technique. The 1wt% Pd/WO3-ZrO2 [...]
Structural characterization and photocatalytic activity of electrospun TiO2 and Ce-doped TiO2 nanofibers
Mixed phase TiO2 and Ce-doped TiO2 nanofibers with different content (0.5, 2.0, 8.0%) ofcerium ions were prepared by a sol-gel electro-spinning method. Results from SEM showed nobeads on the undoped-TiO2 and Ce-doped TiO2 nanofibers with [...]
The effect of promoters on reduction of Ru/ZrO2/Co/SiO2 catalyst for Fischer-Tropsch synthesis as studied by in situ XANES
AbstractRu/ZrO2/Co/SiO2 was prepared via a co-precipitation and an incipient wetnessimpregnation methods and characterized by XRD and XANES. To study the effect ofpromoters on reduction of active cobalt species on the catalyst, Ru/ZrO2/Co/SiO2,ZrO2/Co/SiO2, Ru/Co/SiO2, and Co/SiO2 [...]
Synthesis and Characterization of Nanocomposites Using the Nanoscale Laser Soldering in Liquid Technique
It has been known that catalytic and sensing properties of semiconductor and metal nanoparticles (NPs) can be greatly enhanced if they are made in the form of nanocomposites. For that reason, in this work, we [...]
Mesoporous Zirconia Supported Nickel Catalysts for Coke Minimization in Dry Reforming of Methane
Mustu H., Arbag H., Yasyerli N., Yasyerli S., Yasyerli N., Yasyerli S., Dogu G., Dogu T., Dogu G., Dogu T., Gazi University, TR
Dry reforming of methane is a promising route for conversion of two of the most abundant greenhouse gases to syngas. Ni based catalysts are generally preferred due to low cost and good activity. However, significant [...]
From Synthesis Gas to a Clean Transportation Fuel Dimethyl Ether: New Nanocomposite Bifunctional Catalyst Pairs
Diemethyl ether (DME) is a promising diesel fuel alternative due to its high cetane number and clean burning properties. Direct synthesis of DME from syngas has major thermodynamic advantages over the conventional process. Technological development [...]
Redox catalysts based on Au and Pd/PdO bimetallic nanoparticles confined in mesoporous silica SBA-15
Dias B.F., Teixeira-Neto A.A., Teixeira-Neto E., Teixeira-Neto A.A., Teixeira-Neto E., Universidade Federal do ABC, BR
Since the catalytic activity of nanoscale gold was discovered many studies in this subject have been done. A very interesting system, based on Au and Pd bimetallic nanoparticles (NPs), has emerged from those studies, and [...]
Copper Oxide–Cobalt Oxide Nanoscale Heterostructures for Photocatalysis
The research work discussed here will be focused on development of multifunctional nanoscale heterostructured photocatalysts comprised of oxides of copper and cobalt. Two fabrication approaches are described: a) solution and b) dry processing route. The [...]