Patent classifications
B01J13/0091
Method for manufacturing aerogel blanket
Provided is a method for manufacturing an aerogel blanket having improved processability by reducing manufacturing time and cost, the method including the steps of mixing a precursor material, an acid catalyst and a hydrous alcohol to prepare a sol, depositing a substrate in the sol, and reacting with a gaseous silazane-based compound to form a gel and to perform aging and surface modification reaction simultaneously to form a wet gel blanket, and drying the wet gel blanket to manufacture an aerogel blanket.
A novel process for the hydrophobization of porous silica
A process for the hydrophobization of a porous silica based compound involves the steps of providing a composition (I) containing a porous silica based compound, treating the composition (I) with a composition (II) containing hexamethyldisiloxane or its hydrolyzed form, and removing the treated silica based compound. The porous silica based compound obtained by the process is useful. A porous silica based compound obtained or obtainable by the process can be used for medical and pharmaceutical applications, as adsorbents, for cosmetic applications, as an additive for food, as a catalyst support, for the preparation of sensors, or for thermal insulation.
System and method for using ultramicroporous carbon for the selective removal of nitrate with capacitive deionization
The present disclosure relates to a flow through electrode, capacitive deionization (FTE-CDI) system which is able to adsorb nitrates from water being treated using the system. The system makes use of a pair of electrodes arranged generally parallel to one another, with a water permeable dielectric sandwiched between the electrodes. The electrodes receive a direct current voltage from an electrical circuit. At least one of the electrodes is formed from a carbon material having a hierarchical pore size distribution which includes a first plurality of pores having a width of no more than about 1 nm, and a second plurality of micro-sized pores. The micron-sized pores enable a flow of water to be pushed through the electrodes while the first plurality of pores form adsorption sites for nitrate molecules carried in the water flowing through the electrodes.
Fiber-reinforced organic polymer aerogel
Fiber-reinforced organic polymer aerogels, articles of manufacture and uses thereof are described. The reinforced aerogels include a fiber-reinforced organic polymer matrix having an at least bimodal pore size distribution with a first mode of pores having an average pore size of less than or equal to 50 nanometers (nm) and a second mode of pores having an average pore size of greater than 50 nm and a thermal conductivity of less than or equal to 30 mW/m.Math.K at a temperature of 20° C.
Preparation of SiO.SUB.2.—TiO.SUB.2 .composite aerogels and SiO.SUB.2.@TiO.SUB.2 .core-shell aerogels with high thermal stability and enhanced photocatalysis
According to one inventive concept, a method for forming an aerogel includes forming a SiO.sub.2 gel, forming a mixture of the SiO.sub.2 gel and a TiCl.sub.4-derived precursor sol, wherein the TiCl.sub.4 sol is comprised of TiCl.sub.4 and a solvent, forming a SiO.sub.2/TiO.sub.2 wet gel, drying the SiO.sub.2/TiO.sub.2 wet gel, and heating the dried SiO.sub.2/TiO.sub.2 gel.
THERMOELECTRIC DEVICE WITH SEEBECK EFFECT
The invention relates to a porous thermoelectric material (5; 5a, 5b): having, at 20° C. and at atmospheric pressure, a thermal conductivity of less than 100 mW/(m.Math.K) and an electrical conductivity of between 20 S/m and 10.sup.5 S/m, and comprising a matrix of a thermal insulating material which has a porosity of more than 70%, and which may be filled at least locally with an electrically conductive material (5b), the content of the electrically conductive material being comprised between 0% and 90% by weight of the total weight of the thermal insulating material.
METHOD OF PREPARING METAL OXIDE-SILICA COMPOSITE AEROGEL AND METAL OXIDE-SILICA COMPOSITE AEROGEL PREPARED BY THE SAME
Provided is a method of preparing a metal oxide-silica composite aerogel and a metal oxide-silica composite aerogel having an excellent weight reduction property prepared by the method. The method comprises adding an acid catalyst to a first water glass solution to prepare an acidic water glass solution (step 1); adding a metal ion solution to the acidic water glass solution to prepare a precursor solution (step 2); and adding a second water glass solution to the precursor solution and performing a gelation reaction (step 3).
Molecularly doped nanodiamond
A method of making molecularly doped nanodiamond. A versatile method for doping diamond by adding dopants into a carbon precursor and producing diamond at high pressure, high temperature conditions. Molecularly doped nanodiamonds that have direct incorporation of dopants and therefore without the need for ion implantation. Molecularly-doped diamonds that have fewer lattice defects than those made with ion implantation.
Freestanding metal-organic framework (MOF) aerogels and preparation
An aerogel is formed by preparing metal-organic framework (MOF) aerogels by preparing a porous solid comprising a metal precursor for the metal-organic framework (MOF) aerogels, and transforming the metal precursor into the MOF by reacting the porous solid with organic ligands mixed with a solvent. The solvent is then removed by supercritical extraction and drying.
Aerogel and production method of aerogel
An aerogel and drying method, the aerogel having a larger size, good productivity, and high transparency. The aerogel has a silsesquioxane structure and exhibits two exothermic peaks observed in a temperature range of 300 to 600° C. as measured by TG-DTA (thermogravimetry-differential thermal analysis) under an inert gas atmosphere containing 80% by volume of an inert gas and 20% by volume of oxygen. A method for producing aerogel includes a drying step including a first step in which an aerogel which has undergone condensation of a hydrolysate is placed in a liquid phase system having a first liquid phase and a second liquid phase; a second step in which a first solvent constituting the first liquid phase is evaporated from the first liquid phase at a temperature greater than room temperature; and a third step in which heating is still continued after the first liquid phase is evaporated off.