Abstract:
Methods of preparing organosilica materials using a starting material mixture comprising at least one compound of Formula [(RO) 2 SiCH 2 ] 3 (la) and at least one compound of Formula [R'ROSiCH 2 ] 3 (lb), wherein each R' independently represents an RO-, an R group, or an (RO) 3 Si-CH 2 — group, at least one R' being (RO) 3 Si-CH 2 —; and R represents a C 1 -C 4 alkyl group, in the absence of a structure directing agent and/or porogen are provided herein. Processes of using the organosilica materials, e.g. , for gas separation, etc. , are also provided herein.
Abstract:
A method for producing a porous boron nitride material. The method comprises providing a mixture comprising a first nitrogen-containing organic compound, a second nitrogen-containing organic compound and a boron-containing compound. The method further comprises heating the mixture to cause thermal degradation of the mixture and form a porous boron nitride material.
Abstract:
The present invention relates to a highly porous magnesium carbonate and method of production thereof. The method according to the invention provides a way to control the average pore size of the highly porous magnesium carbonate by controlling the agglomeration of CO 2 in a powder formation step in a sol-gel based production process. The method makes it possible to adapt the average pore size to a second material, for example a pharmaceutical compound, to be loaded into highly porous magnesium carbonate. The highly porous magnesium carbonate according to the invention comprises mesopores with an average size in the range 10-30 nm.
Abstract:
With the present invention, there is provided a method for production of a boron-doped alumina catalyst supporting material. Said method of production comprises the steps of mixing aluminum alkoxide and 1-propanol in order to obtain a solution such that the molarity of aluminum alkoxide in a mixing medium is 0.4-1; heating the said solution to a temperature of 25-85°C; adding into the heated solution a solution of sodium tetraborate decahydrate dissolved in water such that a mol ratio of 15-100 of water to aluminum alkoxide is obtained; adding nitric acid into the resulting mixture in a mol ratio of 0.1-0.9 of nitric acid to aluminum alkoxide; cooling the nitric acid added mixture, with stirring for 1-6 hours, to room temperature by means of a condenser system in order to obtain a gel; aging the gel mixture by keeping it at room temperature for 48 hours; drying the aged mixture at 100°C for 24 hours in order to obtain a particulate; calcinating the particulate at 500°C for 3 hours in order to obtain a boron- doped alumina catalyst supporting material.
Abstract:
An electrode of an energy storage device and methods of fabrication are provided which include: pyrolyzing a carbon-containing precursor to form a stabilized-carbonized material; and annealing the stabilized-carbonized material to form a structurally-modified activated carbon material. The structurally-modified activated carbon material includes a tunable pore size distribution and an electrochemically-active surface area. The electrochemically-active surface area of the structurally-modified activated carbon material is greater than a surface area of graphene having at least one layer, the surface area of the graphene having at least one layer being about 2630 m 2 g -1 .
Abstract:
A catalyst precursor, suitable for use after reduction as a water-gas shift catalyst, is described, which is in the form of a pellet comprising one or more oxides of iron, wherein the catalyst precursor has a pore volume > 0.30 cm 3 /g and an average pore size in the range 60 to 140 nm The precursor may be prepared by calcination of precipitated iron compounds at temperatures in the range 400-700°C.
Abstract:
Composites of porous nano-featured silicon and various materials, such as carbon, are provided. The composites find utility in various applications, such as electrical energy storage electrodes and devices comprising the same.
Abstract:
A respiratory protection filter includes filtration media. The filtration media includes an iron-doped manganese oxide material having an average pore size (BJH method) in a range from 1 to 4 nm and a surface area (BET) of at least 300 m 2 /g, or at least 350 m 2 /g, or at least 400 m 2 /g.
Abstract:
La présente invention concerne un procédé de préparation de dioxyde de titane (TiO2) macro et mésoporeux cristallin, comprenant notamment les étapes de préparation d'un mélange acidifié comprenant un séparateur, le mélange étant acidifié à au moins 25 % en masse en acide; - l'ajout en deux temps à une source de titane du mélange acidifié comprenant un séparateur et d'une source d'azote : - l'obtention d'un gel de dioxyde de titane à partir de la solution de titane dopé à l'azote; - le lavage du gel de dioxyde de titane avec un alcool; - l'obtention d'un dioxyde de titane macro et mésoporeux cristallin à partir du gel de dioxyde de titane lavé. L'invention concerne également un dioxyde de titane macro et mésoporeux cristallin pouvant être obtenu par le procédé ci-dessus.