44 results about "Porosimetry" patented technology

A porous substrate includes a continuous graphitic phase, and a glass and / or ceramic phase. The graphitic phase and the glass and / or ceramic phase together form a continuous interconnected pore structure. A total pore volume of the porous substrate is at least 40% as determined by mercury porosimetry. The porous substrate is conductive to electricity. A method of forming a porous substrate includes extruding, drying, and firing an extruded extrudable composition that includes a binder and / or sintering aid.

The invention discloses a negative electrode material, a preparation method thereof and a lithium ion battery. The negative electrode material includes a carbon material having pores therein, and the pores have the following characteristics: pores having a pore diameter of 3 nm or more and 1000 nm or less, the pore volume obtained by a mercury porosity measurement method being V1, and V1lt; 0.1 mL / g; the pore size of the pores is more than 3 nm and less than 400 nm, the pore volume obtained by a mercury porosity measurement method is V2, and the ratio range of V2 / V1 is 40%-70%; the pore size is more than 3 nm and less than 500 nm, the pore volume obtained by a mercury porosity measurement method is V3, and the ratio range of V3 / V1 is more than or equal to 60%.

To provide an adsorption filter that combines excellent water permeability through low water flow resistance with the capability to remove ultrafine particles, while allowing for extended use.SOLUTION: An adsorption filter according to the present invention is composed of a molded body including activated carbon and a binder. The pore volume of pores with diameters of 15-30 μm, relative to the volume of the adsorption filter and measured via mercury porosimetry, is 0.06-0.30 cm3 / cc.SELECTED DRAWING: Figure 2

A method of making a ceramic honeycomb wall-flow filter substrate supporting an on-wall coating, a fragment of which on-wall coated filter substrate analysed by mercury porosimetry has a volume of pores of 005 to 0.5 µm diameter as a percentage of a mercury intrusion volume of the fragment of at least 15.0%, comprises the steps of: (i) preparing a slurry comprising water, a carboxylic acid, inorganic oxide particles or a mixture of two or more inorganic oxide particles having a D(v, 0.9) of 8 to 20 µm; and 10 to 35 % by weight relative to 100% weight of the inorganic oxide particles of a particulate insoluble cellulose pore former of non-uniform morphology and having an equivalent spherical diameter D(v, 0.5) of 0.5 to 14 µm and a modal aspect ratio (width / length) of 0.3 to 0.9; (ii) coating the slurry on at least first channels of the substrate, wherein the substrate has a mean pore size (D50) of 6 to 15 µm prior to any coating and a porosity less than 60% prior to any coating; and (iii) drying and calcining the slurry-coated substrate, whereby sufficient slurry is coated on the substrate so that the product of step (iii) has a coating loading of 0.07 to 0.4 g / in3 (4.3 to 24.4 g / L), relative to a substrate weight prior to step (ii) and wherein a mean average on- wall coating thickness of the coated substrate is 5 to 70 µm.

This porous carbon material has, in a pore size distribution measured by mercury porosimetry, a first peak positioned in a pore diameter range from equal to or greater than 3 nm to less than 10 nm and a second peak positioned in a pore diameter range from equal to or greater than 10 nm to equal to or less than 1 µm, and satisfies at least one of the following (A), (B), and (C).　(A) The X-ray diffraction pattern has a peak (i) that has a half-value width of 0.6° or less and a peak top in the range of 2θ = 25° to 27°.　(B) In measurement of the nitrogen adsorption, the amount of nitrogen adsorption when the relative pressure is 0.2 is 10 cm3 / g to 250 cm3 / g.　(C) The surface oxygen concentration measured by XPS is not more than 6 at%.

A precipitated silica having a low BET specific surface area according to the present invention has a total pore volume of 2.50 cm3 / g or more as measured by mercury porosimetry, a BET specific surface area of 15-35 m2 / g, a volume average particle diameter D500min of 2.0-25 μm in a particle size distribution of a slurry having 4 mass% of the precipitated silica, and a particle diameter change rate A of 0.50-0.90 as calculated by the following formula. Particle diameter change rate A = (D500min - D505min) / D500min. In the formula, the volume average particle diameter D505min is the volume average particle diameter in a particle size distribution when a ultrasonic treatment has been performed on the slurry having 4 mass% of the precipitated silica for 5 minutes. The precipitated silica according to the present invention exhibits excellent polishing properties in terms of polishing speed and smoothness of the polishing surface. The present invention further relates to a composition including the precipitated silica and a method for producing the precipitated silica.

Provided is a polyolefin microporous membrane which, when used as a battery separator, can impart high output characteristics and high safety, and which, when used as a liquid filter, can eliminate the tradeoff between small pore diameter and high permeability. When the arithmetic average roughness Sa (nm) of one surface and the other surface of the microporous membrane is set as Sa1 and the arithmetic average roughness Sa of the surface having a large arithmetic average roughness is set as Sa2, formula 1 and formula 2 are satisfied. When the intermediate value of the pore diameter based on the surface area determined by a water squeezing type porosity analyzer is set as Ds and the intermediate value of the pore diameter based on the pore volume is set as Dv, formula 3 is satisfied, and the puncture strength converted into the basis weight is 700 mN / (g / m < 2 >) or more. Formula 1: 10 < = (Sa1+Sa2) / 2 < = 80 Formula 2: Sa1 / Sa2 < = 1.4 Formula 3: 1.0 < = Dv / Ds < = 1.2

1. A method for making a ceramic honeycomb wall-flow filter substrate supporting an on-wall coating, wherein a section of the on-wall coated filter substrate analyzed by mercury porosimetry has a pore volume of 0.05 to 0.5 μm diameter as a percentage of the mercury intrusion volume of at least 15.0% of the section, and (i) an equivalent spherical diameter D(v,0.5) of 0.5 to 1 μm, which is equal to 10 to 35 wt. % of water, carboxylic acid, inorganic oxide particles, or a particulate insoluble cellulose pore former of heterogeneous morphology, with D(v,0.9) of 8 to 20 μm, relative to 100 wt. % of inorganic oxide particles. 4 μm and having a modal aspect ratio (width / length) of 0.3 to 0.9; (ii) coating the slurry onto at least first channels of a substrate, the substrate having an average pore size (D50) of 6 to 15 μm and a porosity of less than 60% before any coating; and (iii) drying and calcining the slurry-coated substrate, wherein the product of step (iii) has a porosity of 0.07 to 0.4 g / in based on the substrate weight before step (ii). 3 A method wherein sufficient slurry is coated onto a substrate to have a coating loading of (4.3-24.4 g / L) and an average on-wall coating thickness of the coated substrate is 5-70 μm.

In a kraft paper having a grammage according to ISO 536 in the range of from 60 g / m<com:Sup>2< / com:Sup> to 120 g / m<com:Sup>2< / com:Sup>, in particular from 70 g / m<com:Sup>2< / com:Sup> to 110 g / m<com:Sup>2< / com:Sup>, a density in the range of from 680 kg / m<com:Sup>3< / com:Sup> and 720 kg / m<com:Sup>3< / com:Sup>, and a tensile strength index in the machine direction according to ISO 1924-3 of between 79 kNm / kg and 98 kNm / kg, which kraft paper optionally has a coating and / or an auxiliary element on at least one side, the kraft paper is made of a pulp having an average pulp fibre length of from 2.2 mm to 2.7 mm with a minimum pulp content in the kraft paper of at least 96 wt.%, preferably at least 97 wt.%, and a pore volume of the uncoated kraft paper measured by mercury porosimetry according to ISO 15901-1 is from 200 µl / g to 220 ml / g, in the thickness direction of the paper there are formed regions of different porosity from one another measured by mercury porosimetry according to ISO 15901-1, at least one region has pores with a pore diameter of less than or equal to 0.3 µm, and also a paper sack.

The invention relates to a shaped unsupported catalyst body for preparation of unsaturated aldehydes and unsaturated carboxylic acids, wherein the shaped unsupported catalyst body comprises at least the elements molybdenum, bismuth, iron and cobalt, wherein the shaped unsupported catalyst body comprises inorganic fibres having an average fibre length of 10 µm to 1 mm and an average fibre diameter of 1 µm to 30 µm, and the shaped unsupported catalyst body has a total pore volume of 0.37 to 0.65 ml / g, the total pore volume being determined by mercury porosimetry.

A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls and being formed by integrally bonding honeycomb segments by binder layers, the cell walls having porosity of 40-50% and a median pore diameter of 8-18 μm, an average pore width W determined by averaging the lengths (pore widths) of all measured pore portions being 10-25 μm, the number N of pores per length determined by dividing the total number of the measured pores by the total length of the straight lines used for measurement being 20-40 / mm, and the volume of pores having pore diameters of 20 μm or more being 10-20% of the total pore volume in the cell walls and the volume of pores having pore diameters of 9 μm or less being 3-25% of the total pore volume in the cell walls, measured by mercury porosimetry.

This invention belongs to the field of electrode material technology, specifically relating to an anode foil, its preparation method, and an aluminum electrolytic capacitor. The preparation method of the anode foil includes performing a secondary porosimetry etching on the aluminum foil after primary porosimetry etching. The secondary porosimetry etching includes multiple stages of porosimetry etching, with a mid-treatment process between each adjacent stage. This preparation method involves multiple stages of porosimetry etching, and the mid-treatment process between each adjacent stage effectively increases the pore size of the etched foil, making it suitable for preparing ultra-high voltage anode foils with low loss and high specific capacitance.

Provided is a precursor of a positive electrode active material, which enables a positive electrode active material having low resistance to be obtained. A precursor of a positive electrode active material, the precursor comprising secondary particles in which a plurality of primary particles are agglomerated, the primary particles comprising a nickel composite hydroxide, the average pore diameter of the precursor, as determined by mercury porosimetry, being less than 5.80 μm, and the total pore specific surface area being more than 0.11 m 2 / g.

The present application discloses a negative electrode material, a preparation method thereof, and a lithium ion battery. The negative electrode material includes a carbon material, and the carbon material has pores, and the pores have the following characteristics: pores with a pore diameter of more than 3 nm and less than 1000 nm, the pore volume obtained by mercury porosimetry is V1, and V1 < 0.1 mL / g; pores with a pore diameter of more than 3 nm and less than 400 nm, the pore volume obtained by mercury porosimetry is V2, and the ratio range of V2 / V1 satisfies 40% - 70%; pores with a pore diameter of more than 3 nm and less than 500 nm, the pore volume obtained by mercury porosimetry is V3, and the ratio range of V3 / V1 satisfies ≥60%.

An amino compound-supported porous substrate includes: a porous substrate including at least macropores; and an amino compound supported in at least some pores of porous substrate. Porous substrate has a total pore volume per unit volume of the porous substrate of 0.55 mL / mL or more and 0.95 mL / mL or less, as determined by mercury porosimetry. Porous substrate preferably has a skeleton containing an element selected from the group consisting of silicon, aluminum, tin, cerium, titanium, and zirconium.

A porous substrate includes a continuous graphitic phase, and a glass and / or ceramic phase. The graphitic phase and the glass and / or ceramic phase together form a continuous interconnected pore structure. A total pore volume of the porous substrate is at least 40% as determined by mercury porosimetry. The porous substrate is conductive to electricity. A method of forming a porous substrate includes extruding, drying, and firing an extruded extrudable composition that includes a binder and / or sintering aid.

The invention is directed to a composite structure in which a metal member having a roughened surface and a resin member are joined in a state in which at least a portion of the roughened surface is included. The resin member is made of a molded article obtained by melt-molding a polyarylene sulfide resin composition containing a polyarylene sulfide resin. In the roughened surface, a cumulative pore volume of a pore diameter in a range of 0.1 μm to 20 μm is in a range of 0.5 nL / mm2 or more and 5 nL / mm2 or less measured by mercury porosimetry. According to the invention, it is possible to provide a composite structure that is obtained by joining a metal member and a molded article made of polyarylene sulfide resin composition and is more excellent in joining strength, heat cycle resistance, and sealing properties, and a method for producing the composite structure.

This invention relates to a composition based on Al and Ce in oxide form (composition C1); or based on Al, Ce, and La in oxide form (composition C2), the composition having the following proportions: - CeO2 proportion between 3.0 wt% and 35.0 wt%; - La2O3 proportion (for composition C2 only) between 0.1 wt% and 6.0 wt%; - the remainder being Al2O3; the composition exhibits the following porosity distribution: - pore volume in the range of pore size between 5 nm and 100 nm between 0.35 and 1.00 mL / g; and - pore volume less than or equal to 0.15 mL / g in the range of pore size between 10 nm and 5 nm. The pore volume in the range of 0 nm to 1000 nm, determined by mercury porosimetry; and the following characteristics: - an average crystallite size of less than 45.0 nm, preferably less than 40.0 nm, after calcination in air at 1100 °C for 5 hours (denoted as D1100 °C-5h); - an average crystallite size of less than 25.0 nm, preferably less than 20.0 nm, and even more preferably less than 15.0 nm, after calcination in air at 900 °C for 2 hours (denoted as D900 °C-2h); and - the increase in the average crystallite size of less than 30.0 nm, preferably less than 25.0 nm, ΔD, calculated by the following formula: ΔD = D 1100℃‑2h -D 900℃‑5h The average size of the crystallites was obtained by XRD from the diffraction peaks corresponding to the cubic phase of cerium oxide, which are typically present at 2Φ between 28.0 and 30.0 [111].

The present invention relates to a catalyst in which a ratio (B / A) of a cumulative pore volume (B) in a pore diameter of 0.35 μm to 4.0 μm to a cumulative pore volume (A) in a pore diameter of 4.0 μm to 10.0 μm measured by mercury porosimetry is 2.5 to 15.0, and a cumulative specific surface area is less than 5 m2 / g.

The present invention provides porous spherical silica having a large modal pore size, a high pore volume, and a sharp pore size distribution, and a method for producing the same. The pore volume measured by mercury porosimetry is 0.5 ml / g or more and 8 ml / g or less, The most common pore size measured by mercury porosimetry is 5 nm or more and 50 nm or less, The porous spherical silica is characterized in that the ratio of the volume of pores present within a range of ±5 nm of the mode pore diameter to the total volume of pores is 40% or more. The porous spherical silica can be produced by forming a fumed silica dispersion, which has been dispersed so as to have a particle size distribution within a predetermined range, into spheres by an emulsion method, and then gelling the spheres.

A metal nonwoven fabric contains a metal fiber and has liquid permeability. The metal fiber has an average fiber diameter of 20 nm or more and 10 μm or less. The metal nonwoven fabric has a void distribution peak top diameter measured according to mercury porosimetry of 30 μm or less. In the metal nonwoven fabric, the void distribution peak top diameter measured according to mercury porosimetry is preferably 0.01 μm or more. Where a length of a crystal of a metal that constitutes the metal fiber in an extension direction of the metal fiber is represented by X and a length of the crystal in a direction perpendicular to the extension direction of the metal fiber is represented by Y, an arithmetic average value of values of a ratio X / Y of crystals that are present at three boundary regions formed by dividing a length of the metal fiber that constitutes the metal nonwoven fabric into four equal parts in the extension direction of the metal fiber is preferably 4 or less, the ratio X / Y being a ratio of the length X relative to the length Y.

The present invention relates to a silica glass porous body having a plurality of pores, the pores including open pores, the volume density of the silica glass porous body being 1.1 g / cm3 to 1.7 g / cm3, and the average pore diameter of the open pores as determined by mercury intrusion method being 50 [mu] m to 200 [mu] m.

The present application provides a material for plasma spraying that enables formation of a HAp coating film that is high in hardness and less likely to wear even under plasma spraying conditions with low flame energy. The HAp powder has an average particle diameter (D 50 ) of 15 to 40 μm and a pore volume of pores with a pore diameter of 2000 nm or less as measured by mercury porosimetry of 0.01 to 0.30 cc / g. The HAp powder enables plasma spraying even under plasma spraying conditions with low flame energy and enables formation of a HAp coating film that is high in hardness and less likely to wear.

The invention belongs to the technical field of new energy materials, and relates to a graphitized porous carbon preparation method and a supercapacitor electrode material. The method comprises the following steps: pretreating a biomass raw material to obtain pre-carbonized powder; mixing the pre-carbonized powder with potassium ferrite trioxalate, and performing high-temperature activation catalytic reaction in a first inert atmosphere to obtain an initial graphitized porous carbon material; and carrying out supercritical carbon dioxide treatment on the initial graphitized porous carbon material to optimize the pore structure of the initial graphitized porous carbon material through permeation and chambering effects of supercritical carbon dioxide so as to obtain the target graphitized porous carbon material. Based on the method, the porosity and graphitization of the biomass carbon are synchronously realized through a potassium ferrite trioxalate one-step method, the high-performance graphitized porous carbon is prepared by combining supercritical carbon dioxide post-treatment, and the process is simple, convenient and environment-friendly.

The present invention provides a precipitated silica that exhibits excellent polishing properties in terms of polishing rate and smoothness of polished surface, a composition containing the precipitated silica, and a method for producing the precipitated silica. The precipitated silica has a particle size of 2.50 cm as measured by mercury porosimetry. 3 / g or more, total pore volume 15-35m 2 / g BET specific surface area, and a volume average particle diameter D50 of 2.0 to 25 μm in a particle size distribution in a 4 mass% precipitated silica slurry. 0min and the particle size change rate A calculated by the following formula is 0.50 to 0.90. Particle size change rate A=(D50 0min -D50 5min ) / D50 0min ;Volume average particle size D50 5min is the volume average particle diameter in the particle size distribution when a slurry of 4% by mass of precipitated silica is subjected to ultrasonic treatment for 5 minutes.

Disclosed herein is a concrete article comprising: a plurality of pores having an average pore diameter of less than 1 micron as measured using mercury intrusion porosimetry (MIP) with a pressure of less than 440 MPa and overall porosity of less than 15% measured using helium porosimetry, wherein the concrete article exhibits a gas permeability of 10−17 to 10−22 m2 as measured under steady-state conditions (with an upstream chamber pressure of 0.31 MPa and a downstream chamber pressure of less than 5 Pa) and is configured to substantially prevent a gas leak. Also disclosed are methods of making the same articles.

The adsorption filter of the present invention is an adsorption filter comprising a molded body containing activated carbon and a binder, and the adsorption filter has a volume-based pore diameter of 10 μm or more and a pore volume of 0.10 cm 3 / cc~0.39cm 3 / cc adsorption filter.

A porous zirconia-based composite oxide which is characterized in that the following (1)-(3) are satisfied in the range of 2-200 nm inclusive in the pore distribution by the BJH method, the volume of pores in the range of more than 100 nm but not more than 1000 nm in the pore distribution by the mercury intrusion method is 0.01-0.25 cm < 3 > / g inclusive, (1) the dV / dlogD peak is in the range of 2-100 nm inclusive, (2) the maximum value of the dV / dlogD peak is 1.5-5.0 inclusive, and (3) the maximum value of the dV / dlogD peak is 0.5-5.0 inclusive. (3) The pore volume in the range of 2 nm to 100 nm (inclusive) is 0.30 cm < 3 > / g to 1.50 cm < 3 > / g (inclusive).

The present invention relates to a mass for trapping silicon compounds, comprising a porous alumina-based support and at least one metal chosen from the metals from groups VIB and VIIIB, and exhibiting a grain density of at least 1.20 g / ml, a specific surface of at least 300 m2 / g and pores with a mean size of less than 6.5 nm, as determined by mercury porosimetry. The present invention also relates to a process for the preparation of said trapping mass and to a trapping process using said trapping mass.

Disclosed in the present application are a negative electrode material and a lithium-ion battery. The negative electrode material comprises a carbon material having pores therein. The pores are characterized in that the pore volume of pores having a pore diameter of 3 nm or more and 1000 nm or less as measured by means of mercury porosimetry is V1, where V1<0.1 mL / g; the pore volume of pores having a pore diameter of 3 nm or more and 400 nm or less as measured by means of mercury porosimetry is V2, and the range of the V2 / V1 ratio satisfies 40-70%; and the pore volume of pores having a pore diameter of 3 nm or more and 500 nm or less as measured by means of mercury porosimetry is V3, and the range of the V3 / V1 ratio satisfies ≥60%.