摘要:
A functionalized nanoporous structure comprising: (a) a matrix that comprises a first sol-based ceramic; and (b) one or more functionalized nanosized pores within the matrix, wherein each functionalized nanosized pore is defined by (i) a coating that comprises a second sol-based ceramic and, optionally, a first functional material; and (ii) a second functional material bound to the coating, wherein the second functional material is optional if the coating comprises the first functional material; and (c) optionally, a hybrid component that comprises one or more particles of a composition different from that of the matrix.
摘要:
There is provided a honeycomb-shaped ceramic separation-membrane structure having higher pressure resistance than conventional ones and being capable of reducing production costs. The honeycomb-shaped ceramic separation-membrane structure is provided with a honeycomb-shaped base material, an intermediate layer, and a separation layer. At least part of a ceramic porous body has a structure where aggregate particles are bonded to one another by an inorganic bonding material component. In the ceramic separation-membrane structure, an internal pressure fracture strength capable of fracturing the structure by application of water pressure inside the cells is 7 MPa or more.
摘要:
Disclosed are cordierite bodies having relatively high porosity and controlled pore size. The porous cordierite bodies generally include a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite bodies.
摘要:
Disclosed are ceramic bodies comprised of composite cordierite-mullite-aluminum magnesium titanate (CMAT) ceramic compositions having high cordierite-to-mullite ratio and methods for the manufacture of same.
摘要:
A porous carbon and a method of manufacturing the same are provided, which can inhibit metal particles from being oxidized and can keep the effect obtained by adding the metal particles for a long period of time by allowing the metal particles to disperse sufficiently.The method is characterized by comprising the steps of: mixing a polyamic acid resin varnish 1 as a carbon precursor, magnesium oxide 2 as template particles, and chloroplatinic acid 6 as a metal salt; heat-treating the mixture in a nitrogen atmosphere at 1000° C. for 1 hour to reduce the chloroplatinic acid into platinum and thermally decomposing the polyamic acid resin to prepare a carbon 3 containing the platinum particles 7; and washing the resulting carbon 3 with a sulfuric acid solution added at a concentration of 1 mol/L to completely dissolve MgO away.
摘要:
Preparing porous materials includes forming a mixture including a geopolymer resin and a liquid between which a nanoscale (1-1000 nm), microscale (1-1000 m), and/or milliscale (1-10 mm) phase separation occurs. The mixture is solidified (e.g., at an ambient temperature or a relatively low temperature), and a portion (e.g., a majority or a significant majority) of the liquid is removed from the solidified mixture. The liquid can include organic liquids from agricultural, geological, industrial, or household sources. The porous materials have accessible pores with a range of pore sizes including nanoscale pore sizes, microscale pore sizes, milliscale pore sizes, or a combination thereof. The porous material may be treated further to form another material, such as a composite.
摘要:
Provided are an exhaust gas purification filter having a high particulate matter (PM) combustion efficiency, a low coefficient of thermal expansion, and superior thermal resistance and a method for producing the same. An exhaust gas purification filter is formed by sintering columnar aluminum titanate particles whose surfaces have a catalyst material deposited thereon and which have an average aspect ratio (=number average major-axis length/number average minor-axis length) of 1.3 or more, wherein a catalyst made from the catalyst material by thermal treatment during the sintering is supported on the surface of the aluminum titanate.
摘要:
Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.
摘要:
A heat insulating material includes a porous sintered body formed of MgAl2O4 and having a porosity of 60% or more and less than 73%. In the heat insulating material, pores having a pore diameter of 0.8 μm or more and less than 10 μm occupy 30 vol % or more and less than 90 vol % of a total pore volume, pores having a pore diameter of 0.01 μm or more and less than 0.8 μm occupy 10 vol % or more and less than 60 vol % of the total pore volume, the thermal conductivity at 20° C. or higher and 1500° C. or lower is 0.45 W/(m·K) or less, and the compressive strength is 2 MPa or more.
摘要翻译:绝热材料包括由MgAl 2 O 4形成并具有60%以上且小于73%的孔隙率的多孔烧结体。 在绝热材料中,孔径为0.8μm以上且小于10μm的孔占总孔体积的30体积%以上且小于等于90体积%,孔径为0.01μm以上的孔和 小于0.8μm占总孔体积的10vol%以上且小于60vol%时,20℃以上且1500℃以下的导热率为0.45W /(m·K)以下 ,抗压强度为2MPa以上。
摘要:
A honeycomb filter includes a honeycomb structure and plugged portions. Partition walls of the honeycomb structure are made of a partition wall material including a plurality of aggregates containing silicon carbide or silicon nitride as a main component, and a binding material at a content of 15 to 35 mass %. The binding material is made of a material in which mullite particles as reinforcing particles may be dispersed in cordierite. A thermal expansion coefficient of the partition walls at 40 to 800° C. is 4.2×10−6 1/K or less. When a value of a stress applied to the partition wall material at 900° C. is normalized by the maximum value of the stress applied to the partition wall material, a percentage of a plastic deformation displacement in a total displacement at a normalized stress value of 0.9 is in a range of 0.3 to 10%.