Properties of Dimethyl Methylphosphonate Adsorption onto Silica and δ/γ-Alumina
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چکیده
منابع مشابه
Interactions and binding energies of dimethyl methylphosphonate and dimethyl chlorophosphate with amorphous silica.
The fundamental interactions of dimethyl methylphosphonate (DMMP) and dimethyl chlorophosphate (DMCP) on amorphous silica nanoparticles have been investigated with transmission infrared spectroscopy and temperature-programmed desorption (TPD). DMMP and DMCP both adsorb molecularly to silica through the formation of hydrogen bonds between isolated silanols and the phosphoryl oxygen of the adsorb...
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Ab initio quantum chemical calculations have been performed to study the adsorption of trichlorophosphate, dimethyl methylphosphonate, and Sarin via hydrogen bonding to Si-OH groups on the amorphous SiO2 (a-SiO2) surface. Two SiO2 models are used: a small Si5O7H8 “cagelike” cluster and a larger Si21O56H28 structure designed to approximate the local environment in a-SiO2. In the latter case, reg...
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Colloidal silica bonded refractory castables have been developed recently. It was found that colloidal silica is one of the best binders can substitute other binders such as cement in No Cement Castable (NCC) and Ultra Low Cement Castable (ULCC) refractories. Also composition of colloidal silica with appropriate additives resulted in a gel form which makes the initial strength. Moreover, the na...
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Two SiO2 and three Al2O3 adsorbents with varying degrees of mesoporosity (pore diameter 2-50 nm) were reacted with 2,4-dichlorophenoxyacetic acid (2,4-D) at pH 6 to investigate the effects of intraparticle mesopores on adsorption/desorption. Anionic 2,4-D did not adsorb onto either SiO2 solid, presumably because of electrostatic repulsion, but it did adsorb onto positively charged Al2O3 adsorbe...
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ژورنال
عنوان ژورنال: Journal of Chemical & Engineering Data
سال: 2009
ISSN: 0021-9568,1520-5134
DOI: 10.1021/je900673k