Concept
Acide phosphorique
Publications associées (57)
Al uptake in calcium silicate hydrate and the effect of alkali hydroxide
Karen Scrivener, Barbara Lothenbach, Yan Yan
The effect of Al and of pH on the structure of calcium silicate hydrate (C-S-H), the most important hydration product in Portland and blended cement, was studied at Ca/Si similar to 1.0. The presence of Al led to higher amounts of secondary phases, larger ...
PERGAMON-ELSEVIER SCIENCE LTD2022Cellulose phosphorylation comparison and analysis of phosphorate position on cellulose fibers
David Lyndon Emsley, Jayasubba Reddy Yarava, Michel Bardet, Julien Bras
Chemical modifications of cellulose fibers as pretreatment for cellulose nanofibrils (CNF) production have been investigated to improve the production process and the quality of obtained cellulosic nanomaterial. In this study, phosphorylation of cellulose ...
ELSEVIER SCI LTD2020Transforming Phosphogypsum Waste into Products with Market Value
Vast amounts of phosphogypsum (PG) which is a by-product of phosphorous acid production from apatite rock using sulphuric acid, are deposited in large piles at many locations worldwide. PG materials are added at rates of the order of megatonnes (Mt) per an ...
Paul Scherrer Institute, World Resources Forum2019Adsorption of HPDX and CaHPOx (x=1, ...,4) molecules on anatase TiO2 (001) surfaces
perform DFT calculations within the COSMO framework to study the adsorption properties of the CaHPOx (x = 1,...,4) phosphate family, and of the related HPOx acids, on a paradigmatic anatase (001) surface. Of particular interest is CaHPO4, a precursor of hy ...
ELSEVIER SCIENCE BV2019The spatial impact of socio-technical transitions – The case of phosphorus recycling as a pilot of the circular economy
Socio-technical innovations for the recovery of phosphorus (P) from sewage sludge (ashes) and the recycling of the secondary material in the agri-food system have been gaining prominent roles in current debates on circular economy. While research has been ...
2018Single crystal diamond micro-disk resonators by focused ion beam milling
Niels Quack, Teodoro Graziosi, Sichen Mi
We report on single crystal diamond micro-disk resonators fabricated in bulk chemical vapor deposition diamond plates (3 mm x 3 mm x 0.15 mm) using a combination of deep reactive ion etching and Focused Ion Beam (FIB) milling. The resulting structures are ...
AMER INST PHYSICS2018Nearly perfect GaN crystal via pit-assisted growth by HVPE
We demonstrated 5 mm-thick bulk gallium nitride (GaN) with nearly perfect crystal quality. To achieve this, intentional etch pit formation by in situ dry HCl etching and ex situ wet etching in H3PO4 solution was employed on freestanding GaN templates follo ...
Royal Soc Chemistry2017Influence of TiO2 phase composition on the photocatalytic activity of TiO2/MWCNT composites prepared by combined sol-gel/hydrothermal method
László Forró, Arnaud Magrez, Endre Horvath, Klara Hernadi
Titanium dioxide/multiwall carbon nanotube (TiO2/MWCNT) composites were prepared by sol-gel method with hydrolysis of titanium alkoxide precursor followed by crystallization via hydrothermal treatment at different acid concentrations. Transmission electron ...
Elsevier Science Bv2016