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35977 results about "Silica gel" patented technology

Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum. In the latter case, the material is properly called Silica xerogel.

Nicotine suction pipe and nicotine holder

InactiveUS20060191546A1Prevent natural vaporizationSmall inhalation resistanceTobacco devicesInhalationSilica gel
A nicotine inhalation pipe includes a rodlike nicotine holder (1) and a mouthpiece (2) attached to one end of the holder (1). The holder (1) includes a transparent outer tube (3) having a plurality of openings (36) at both ends thereof, liquid absorbent granules (34) filled in the outer tube (3), and a nicotine inhalation path formed by gaps between the liquid absorbent granules (34) and gaps between the inner peripheral surface of the outer tube (3) and the liquid absorbent granules (34). The liquid absorbent granules (34), which are made of porous silica gel and in which a nicotine solution is absorbed, permit nicotine to be vaporized from the nicotine solution.
Owner:SHUSEI TAKANO

Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash

A method for extracting silicon dioxide, alumina and gallium oxide from high-alumina fly ash relates to the technology fields of environmental mineralogy and material, chemical industry and metallurgy. The method comprises the main steps as follows: causing the high-alumina fly ash to react with sodium hydroxide solution; filtering the solution; introducing CO2 to the filtrate for full gelation; cleaning, purifying, drying, grinding and calcining the silica gel after gel filtration to obtain finished white carbon black; adding limestone and a sodium carbonate solution into the filter mass after the reaction and filtration of the high-alumina fly ash and the sodium hydroxide solution; ball grinding the mixture into raw slurry; dissolving out the clinker obtained by baking the raw slurry; subjecting the filtrate to deep desiliconization to obtain sodium aluminate extraction liquid; filtrating the sodium aluminate extraction liquid after subjecting the sodium aluminate extraction liquid to carbon dioxide decomposition; baking the aluminum hydroxide after washing the filter mass to form the aluminum hydroxide product; and extracting the gallium oxide from the carbon dioxide decomposition mother solution and desiliconized solution. The method has the advantages of low material price, simple operating procedures, low investment, low production cost, low energy consumption and less slag.
Owner:TSINGHUA UNIV +1

Amino acid ion liquid for acidic gas absorption

The present invention relates to amino acid ion liquid for absorbing acidic gas. The anion of ion liquid is amino acid, amino acid ramification, similar to amino acid ion, imidazole cation, phosphoric cation, amine cation, ammoniumate cation and etc. After dipping craft, all ions can adhere to poriferous solid to absorb acidic gas such as carbon dioxide, sulfur dioxide emitted by flue and motor vehicles.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Process for preparing silica microcapsules

The present invention relates to a process for preparing silica microcapsules and more particularly, to a process for preparing silica microcapsules comprising the steps of dissolving tetraethyl orthosilicate (TEOS) into an aqueous solution containing a hydrolysis catalyst to control a degree of hydrolysis and contribute hydrophilicity or lipophilicity, adding a core material and an appropriate amount of aminopropyltrialkoxysilane(APS) as a gelling agent into the solution, and emulsifying and dispersing the resulting solution to a solution having a polarity opposite to that of the core material to microcapsulate by coating the core material with silica shell via a sol-gel reaction. The process for preparing microcapsules of the present invention reduces environmental pollution compared to conventional processes using an alkali gelling agent such as an ammonia solution, and are suitable for both organic or inorganic core materials having hydrophilic or lipophilic property.
Owner:UNITECH CO LTD (JP)

Soft prosthesis shell texturing method

A method of texturing a soft prosthetic implant shell, such as a silicone breast implant shell. A soft prosthetic implant with a textured external surface layer of silicone elastomer and having an open-cell structure is made by adhering and then dissolving round salt crystals. The resulting roughened surface has enhanced physical properties relative to surfaces formed with angular salt crystals. An implant having such a textured external surface layer is expected to help prevent capsular contraction, to help prevent scar formation, and to help in anchoring the implant within the body.
Owner:ALLERGAN INC

Compositions and methods for removing mercury from mercury-containing fluids

Oxidative sorbents are provided for adsorbing elemental or oxidized mercury from mercury-containing fluids such as flue gas from a coal-burning power utility or the like at a temperature range of about 50 to 350 ° C. The method of preparing and using the oxidative sorbents is also provided. The oxidative sorbent compositions include one or more silicates capable of cation exchange with a plurality of active metal cations and their counter anions. The silicates may include those selected from clays such as montmorillonite, laumonite, bentonite, Mica, vermiculite and kaolinite, and from silica gels, natural and synthetic molecular sieves, zeolites, and ashes from stoker- and pulverized coal-fired boilers. The one or more oxidative metal halides and / or sulfates may be selected from the group consisting of CuCl, CuBr, CuCl2, CuBr2, CuSO4, FeCl2, FeCl3, FeSO4, Fe2(SO4)3, ZnCl2, ZnBr2, NiCl2, and NiSO4. The oxidative sorbents may also include activated carbon.
Owner:U S ENVIRONMENTAL PROTECTION AGENCY UNITED STATES OF AMERICA THE AS REPRESENTED BY THE ADMINISTATOR

Nitrogen, phosphorus and sulphur doping or co-doping carbon dot and batch controllable preparing method and application thereof

The invention provides a nitrogen, phosphorus and sulphur doping or co-doping carbon dot and a batch controllable preparing method and application thereof. The method comprises the steps that a carbon source, a nitrogen source, a phosphorus source and a sulphur source are evenly mixed, and a mixture is obtained, wherein the molar ratio of C to N to P to S in the mixture is 1 to 0-0.8 to 0-0.4 to 0-0.4, and the contents of N, P and S are prevented from being zero at the same time; in the air, the mixture is heated to be fused, the reaction is carried out for 3 min to 60 min, natural cooling is carried out till the indoor temperature is reached, a reaction product is separated by a silicagel column, raw materials which do not react are removed, and the nitrogen, phosphorus and sulphur doping or co-doping carbon dot is obtained. According to the method, the technology is simple, the compound time is short, batch producing can be achieved, the doping amount can be adjusted and controlled accurately, the fluorescence color of the prepared carbon dot ranges from blue to green, the application can be achieved on bioluminescence marking and cell imaging aspects, and the good economic benefit and the application prospect are achieved.
Owner:XI AN JIAOTONG UNIV
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