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Highly dispersed metal sites on the surface of silica, achieved from immobilization of metal precursor within hydroxyl groups, has gained increasing attention in the field of heterogeneous catalyst. However, the special role of adsorbed water derived by
The moisture content at permanent wilting point (PWP) [Ψ = 1500 kPa] was also at par with that of FC. The addition of the highest percentage of SAH transformed the WRCC of sandy soil to clay loam. Another important reason behind the increased water retention behavior with the SAH ...
A chip of the nominally anhydrous San Carlos olivine reference, with a reported water content of 1.4 μg g−1(ref.69), was used for instrument H2O background corrections, following the relationship H/Obg = (Hcounts – Hbg)/Ocountsand D/Hmeasured = (1 – f) ...
Effect of water content on properties of one-step catalyzed silica aerogels via ambient pressure drying[J] . Alireza Dourbash,Siamak Motahari,Hosseinali Omranpour.Journal of Non-Crystalline Solids . 2014Motahari, Alireza Dourbash Siamak,Omranpour, Hosseinali. Effect of water content on properties ...
The valence content of GT-NZVI elements was determined using XPS (Thermo Fisher Scientific K-Alpha, UK) with a 180° hemispherical energy analyzer. The energy range was 0–5 000 eV, and the X-ray beam spot of 500 μm was continuously adjusted from 900 μm to 200 μm under a ...
The present study suggests that the answer may lie with water and its ability to depolymerize the silica network of the melt. The formation of most, if not all, melts capable of forming podiform chromitites requires the involvement of water in the zone of melt generation. Water not only ...
Concentrations of organic carbon (C org ) in the solid phase of the sediment varied from 1.3 to 2.8% (mean 1.9%), with highest concentrations found at shallow stations south/southwest of Svalbard. Relatively low concentrations were obtained at the deeper stations north/northeast of Svalbard. ...
(CFs)—due to dechlorination occurring ahead of the CFs—and sloughing off of biomass onto the RO membranes, the latter caused by the super-saturated silica content in feed water while operating the RO plant at an unsustainably high recovery (82–85%) given the influent silica concentration (...
Silica frustules extracted from biomass were cleaned using corrosive nitric acid. In addition to the selection of biomass-derived products, the processing of these materials should also be considered in regard to the environmental impact. The highest loaded PSf nanocomposites (0.5% diatom) demonstrated...