CAS: 10213-79-3; Sodium Metasilicate Pentahydrate

专利信息

专利号:US-10239022-B2
优先权日:2016-06-02
标 题 :Porous calcium-silicates and method of synthesis
发明人：SHAHSAVARI ROUZBEH; HEJAZI VAHID
权利人:C CRETE TECH LLC
摘要:Mesoporous membranes have shown promising separation performance with a potential to lower the energy consumption, leading to a dramatic cost reduction. Recently, an extensive effort has been made on the design of membranes which brought a significant progress toward the synthesis of well-defined porous morphologies, most of which synthesized by surfactant-template methodology. Currently, the most well-designed state-of-the-art membranes using this technique are made from metals, polymers, carbon, silica, etc. In the present invention, we demonstrate mesoporous calcium-silicate particles having superior separation capacity and optimal permeability, thereby leading to reduced energy consumption for selective separation of gases/liquids and/or the combination thereof. We explore various methods to improve the calcium-silicate membranes properties by tuning pore density during the synthesis/aging process, while favoring the formation of uniformly distributed nanopores. Lowering particle density by controlling calcium to silicon ratio along with optimizing the surface area are essential in achieving our objective.

专利号:US-11180414-B1
优先权日:2018-09-05
标题:Synthesis of cementless fly ash based binders and applications thereof
发明人：SHAHSAVARI ROUZBEH
权利人:C CRETE TECH LLC
摘要:Novel binder compositions have been discovered that offer an alternative to Portland Cement and reduced carbon dioxide footprint. The compositions typically include the reaction product of a mixture of fly ash, calcium oxide, nanosilica, water, and an effective amount of an activator. The 7, 14, and/or 28 day compressive strength may be at least about 15 MPa or more in some embodiments.

专利号:EP-1334068-B1
优先权日:2000-11-14
标 题 :Synthesis and stabilisation of nanoscale zeolite particles
发明人：VALTCHEV VALENTIN PANOV; BEIN THOMAS
权利人:NANOSCAPE AG
摘要:The present invention relates to a method for the preparation of zeolite particles having an average particle size of less than 1000 nm, wherein a) a solution of a silicate and/or germanate source and a base is prepared, b) a solution of an aluminate and/or gallate source and a base is prepared, and c) the solutions a) and b) are brought together, mixed and reacted, characterised in that the pH value of the solution in step a) is at least 11 and the pH value of the solution is step b) is at least 11. The invention furthermore relates to nanoscale zeolite particles obtainable by a method according to the invention and to colloidal suspensions comprising the nanoscale zeolite particles.

专利号:US-10442696-B2
优先权日:2014-05-06
标 题 :Shape-controlled cement hydrate synthesis and self-assembly
发明人：SHAHSAVARI ROUZBEH; EBRAHIMPOURMOGHADDAM SAKINEH; WHITMIRE KENTON HERBERT
权利人:UNIV RICE WILLIAM M
摘要:In some embodiments, the present disclosure pertains to methods of forming calcium-silicate-hydrate particles by mixing a calcium source with a silicate source. In some embodiments, the mixing comprises sonication. In some embodiments, the mixing occurs in the presence of a surfactant and a solvent. In some embodiments, the methods of the present disclosure further comprise a step of controlling the morphology of the calcium-silicate-hydrate particles. In some embodiments, the step of controlling the morphology of calcium-silicate-hydrate particles comprises selecting a stoichiometric ratio of the calcium source over the silicate source. In some embodiments, the formed calcium-silicate-hydrate particles have cubic shapes. In some embodiments, the formed calcium-silicate-hydrate particles have rectangular shapes. In some embodiments, the formed calcium-silicate-hydrate particles are in the form of self-assembled particles of controlled shapes. Additional embodiments of the present disclosure pertain to compositions that contain the calcium silicate-hydrate particles of the present disclosure.

专利号:US-2024166933-A1
优先权日:2022-11-11
标题:Radiative cooling compositions, precursors for forming the compositions, and coatings formed from the compositions
发明人：HU LIANGBING; ZHAO XINPENG
权利人:UNIV MARYLAND
摘要:Radiative cooling compositions, as well as precursors for forming such compositions, are disclosed. The compositions comprise solid particles of at least a first composition (e.g., Al2O3), which are bound by a suitable binder (matrix or framework). During the synthesis of these compositions from a precursor, solvent of a binder-forming liquid such as water glass may be evaporated, or otherwise glass (e.g., mixed oxide) particles in the precursor may be softened and/or melted, in either case providing a binder for the solid particles. The manipulation of composition porosity, impacting mechanical strength, as well as performance characteristics (reflectance and/or emissivity), is possible through the selection of types and amounts of components, such that a suitable combination of properties can be engineered without the need for polymers or other materials that may be detrimental in terms of cost and/or stability.

专利号:US-2018282169-A1
优先权日:2015-09-03
标题 :Silica synthesis
发明人：MANNING JOSEPH RICHARD HENRY; PATWARDHAN SIDDHARTH VIJAY
权利人:UNIV SHEFFIELD
摘要:A method for the production of a silica includes (1) reacting a silicic acid solution with an amine, to precipitate the silica from an aqueous solvent system. The method also includes removing at least a portion of the amine associated with the precipitated silica by treating the silica in an aqueous solvent system at a pH that is reduced from that of the reaction mixture (2). The reduction in pH may be by first reducing the pH of the aqueous solvent system, and then removing the silica from the aqueous solvent system. Alternatively the reduction in pH may be removing the silica from the aqueous solvent system first, before treating the silica with an aqueous solvent at a pH below that of the silica forming reaction. Subsequently the silica is removed from the solution (3).