the direct conversion of methane to c2 hydrocarbons, in a quartz tube reactor enforced by a dc corona discharge, was investigated at atmospheric pressure. the process was carried out in the presence of metal oxide catalysts of mn/w/sio2, mn/w/sio2 (tetraethyl orthosilicate, teos), and mn/w/cnt (supported on carbon nanotubes). the total yield to c2 hydrocarbons in the presence of metal oxide cat...

Arvosteltu teos: Koivunen, Pia 2020: Rauhanuskovaiset: suomalaiset maailman nuorisofestivaaleilla 1940–1950-luvuilla. Helsinki: Suomalaisen Kirjallisuuden Seura. s. 327.

Arvosteltu teos: Lanas, Maija & Kiilakoski, Tomi (toim.) 2022. Häiriö: Näkökulmia työrauhan häiriöihin koulussa. Tampere: Vastapaino. 281 s.

In this paper,the preparation of nano silica sol was used TEOS hydrolysis. Silica sol was used to compound the SiO2 sol / polyacrylate with acrylate monomer emulsion polymerization, the effect of sol amount and feeding methods of polyacrylate stability and other property of SiO2 / polyacrylate were studied.

Stable superhydrophobic surfaces with water contact angles over 170 degrees and sliding angles below 7 degrees were produced by simply coating a particulate silica sol solution of co-hydrolysed TEOS/fluorinated alkyl silane with NH(3).H(2)O on various substrates, including textile fabrics (e.g. polyester, wool and cotton), electrospun nanofibre mats, filter papers, glass slides, and silicon waf...

The synthesis of a monosilylated Grubbs-Hoveyda ruthenium alkylidene complex is described, as well as the preparation and characterization of the corresponding material by sol-gel cogelification with tetraethoxysilane (TEOS) and the assay of this recyclable supported catalyst in ring-closing diene and enyne metathesis reactions under thermal and microwave conditions.

Hollow silica tubes with mesoporous wall structure were synthesized through the sol-gel reactions of tetraethoxysilane and n-octadecyltrimethoxysilane (TEOS/C18-TMS) on the surface of ammonium dl-tartrate crystals. Novel hollow carbon tubes with mesoporous walls and rectangular-shaped channels were fabricated using the silica tubes as templates.

Submit Manuscript | http://medcraveonline.com Abbreviations: ILs: Ionic Liquids; CMNPs: Citrate-Coated Magnetite Nanoparticles; TEOS: Tetraethoxyorthosilicate; CPTMS: 3-Cloropropyltrimethoxysilane; IM: Imidazole; XRD: X-Ray Diffraction; FT-IR: Fourier-Transform Infrared Spectroscopy; TGA: Thermal Gravimetric Analysis; VSM: Vibrating-Sample Magnetometer; SEM: Scanning Electron Microscope; TLC: T...

Arvosteltu teos: Karppinen-Kummunmäki, Henna 2022. Tyttöjen vuosisadat: Lasten ja nuorten historiaa keskiajalta 1800-luvulle. Helsinki: Avain. 250 s.