226 results about "Mercury intrusion" patented technology

An excellent positive electrode material for a lithium secondary battery is provided that can increase low-temperature load characteristics of the battery as well as improving coatability. When measured by mercury intrusion porosimetry, the material meets Condition (A) and at least either Condition (B) or Condition (C).

Condition (A) : on a mercury intrusion curve, the mercury intrusion volume from 50 MPa to 150 MPa is 0.02 cm³/g or smaller.

Condition (B): on the mercury intrusion curve, the mercury intrusion volume from 50 MPa to 150 MPa is 0.01 cm³/g or larger. Condition (C): the average pore radius is within 10-100 nm, and the pore-size distribution curve has a main peak (with peak top at a pore radius of within 0.5-50 μm) and a sub peak (with peak top at a pore radius of within 80-300 nm).

The invention discloses a method for reconstructing a digital rock core and pore network model based on a random fractal theory. The method comprises the following steps of based on the multiple fractal features of a porous medium, performing fractal representing on a capillary pressure curve obtained by the conventional mercury intrusion method, inferring fractal expressions of random distribution density function, average value and variance by a random distribution theory, and combining the random theory and the multiple fractal theory to construct a digital rock core, so as to rapidly construct a three-dimensional micro-network model. The method has the advantages that the cost is low and is reduced; the capillary pressure curve is measured by the mercury intrusion method, the full-section rock core is used in experiment, and a micro-pore structure is fully displayed. According to the method, the computing method is simple and convenient, and the advanced method is adopted; the micro-pore structure of reservoir rock is complicated and irregular, and an extremely complicated system cannot be accurately described by the traditional classical theory, so after the method combines the multiple fractal theory and the random distribution theory, the micro-pore structure can be accurately represented, and the method is easily implemented by programming.

The invention discloses a composite membrane and a preparation method thereof and a battery comprising the composite membrane. The composite membrane comprises a polyolefin porous membrane layer and apolyimide porous membrane layer, wherein the composite membrane also comprises an adhesive layer; the adhesive layer is positioned between the polyimide porous membrane layer and the polyolefin porous membrane layer and tightly attached to the polyolefin porous membrane layer and the polyimide porous membrane layer; and the pore diameter distribution of a polyimide porous membrane comprises that:the pore volume of pores of which pore diameters are 50 to 300 nanometers accounts for over 75 percent of the total pore volume, and the pore volume of pores of which pore diameters are less than 50nanometers and more than 300 nanometers accounts for less than 25 percent of the total pore volume, and the pore diameter is measured by adopting a mercury intrusion method. A lithium ion battery manufactured by using the composite membrane as a battery membrane has improved service life and improved processing yield. Moreover, the composite membrane also has high thermal stability, and greatly improves the safety performance of the battery.

The invention discloses a method for determining contribution of pores with different apertures in a shale reservoir stratum to porosity, and belongs to the technical field of petroleum, geology and mining exploration and development. The method comprises the following steps: selecting three groups of parallel samples from shale reservoir stratum samples at the same depth; carrying out a low-temperature nitrogen adsorption-desorption experiment on the first group of samples to determine contribution of the pores with aperture ranging from 0.4-100 nm to the porosity; carrying out argon ion polishing and electron scanning microscope examination on the second group of samples to determine the contribution of the pores with aperture ranging from 50 nm to 3 microns to the porosity; carrying out mercury intrusion analysis on the third group of samples to determine the contribution of the pores with aperture greater than 1000 nm to the porosity; synthesizing the analytic data of the three groups of parallel samples, and obtaining the determination results of contribution of the pores with different apertures in the shale reservoir stratum to the porosity. The method can determine the contribution of the pores with different apertures in the shale reservoir stratum to the porosity, and overcomes the defect of the conventional gas adsorption method and the mercury intrusion method for determining the contribution of the pores with different apertures in the shale reservoir stratum to the porosity.

Alumina having a pore structure characterized by the absence of macropores, no more than 5% of the total pore volume in pores greater than 350 Å, a high pore volume (greater than 0.8 cc/g measured by mercury intrusion) and a bi-modal pore volume distribution character, where the two modes are separated by 10 to 200 Å, and the primary pore mode is larger than the median pore diameter (MPD), calculated either by volume or by surface area, the MPD by volume being itself larger than the MPD by surface area. Also provided are catalysts made from and processes using such alumina.

The invention provides a high-specific-area white carbon black and a production method thereof. The SBET of the white carbon black is 200-450 m<2>/g, the SBET/SCTAB is less than or equal to 1.2, and the total volume of pores with the diameter of 100-30nm is 40% greater than the total volume of pores with the diameter of less than or equal to 50nm when a mercury intrusion process is used for measuring pore size distribution. The high-specific-area white carbon black has high specific area and porous structure, so that the prepared rubber product has the advantages of favorable wear resistance, favorable tensile strength at break and the like.

The invention provides a hydrogenating deasphaltenizing catalyst and preparation and application thereof. The hydrogenating deasphaltenizing catalyst comprises a supporter and a hydrogenating active metallic compound, wherein the supporter is a doublet-hole alumina supporter which has the pore volume of 0.9 to 1.2ml/g and specific surface area of 50 to 300m<2>/g under the representation in a mercury intrusion method, and the pore volume of a hole being 10 to 30nm in diameter accounts for 55 to 80% of the total pore volume, and the pore volume of a hole being 300 to 500nm in diameter accounts for 10 to 35% of the total pore volume. The preparation method of the supporter comprises the following steps of: mixing, molding, drying and roasting hydrated alumina P1 containing pseudo-boehmite and a modifying substance P2 of the P1, wherein the mixing ratio in weight of the P1 to P2 is (20-95): (5-80; ); the k value of P2 ranges from 0 to 0.9, and the k is DI2/DI1, wherein DI1 represents the acid peptizing index of the hydrated alumina P1 containing the pseudo-boehmite; and DI2 represents the acid peptizing index of the modifying substance P2 of the P1. Compared with the prior art, the catalyst provided by the invention shows greater performance on hydrogenating deasphaltenizing and demetalizing after being applied to hydroprocessing of residual oil.

The invention belongs to a method for determining the full-pore-diameter pore structure of coal through multi-data fusion. The method comprises steps as follows: 1) the pore structure of the coal is determined with a carbon dioxide adsorption method, a liquid nitrogen adsorption method and a mercury intrusion method respectively; 2) the coal pore structure which has the pore diameter smaller than 2 nm and is determined with the carbon dioxide adsorption method, the coal pore structure which has the pore diameter ranging from 2-100 nm and is determined with the liquid nitrogen adsorption method and the coal pore structure which has the pore diameter larger than 100 nm and is determined with the mercury intrusion method are taken, and accordingly the coal pore structures in the full-pore-diameter range are obtained. The method integrating determination of the full-pore-diameter pore structure of the coal and data fusion is provided, the pore diameter which can be determined with the method ranges from 0.4 nm to 360,000 nm, and the reliability and the repeatability of determination data are greatly improved.

Provided is an absorption column for body fluid purification by which the saturated adsorption amount of a substance to be adsorbed can be increased or the time required for reaching the saturated adsorption can be shortened, and therefore, the column capacity can be considerably reduced and the treatment time can be considerably shortened. The adsorption column having functional groups 6 specifically binding to a substance to be adsorbed including at least low density lipoprotein, immobilized on the surface of a porous support 5. The porous support 5 has double-pore structure comprising: a skeleton 7 made of a silica gel or silica glass having a three-dimensional network structure; through-pores 8 of an average diameter measured by the mercury intrusion method of 1 μm or more but less than 4 μm and having a three-dimensional network structure, which are formed in the voids of the skeleton; and micropores 9 having an average diameter measured by the mercury intrusion method larger than the grain diameter of the substance to be adsorbed, which are dispersedly formed on the surface of the skeleton.

Provided is a positive electrode active material which is useful for a lithium secondary battery having a battery resistance lower than that of the conventional positive electrode active material below freezing point. The positive electrode active material for a lithium secondary battery contains at least one element selected from a group consisting of nickel, cobalt and manganese, the positive electrode active material having a layered structure and satisfying all of the following requirements (1) to (3): (1) a primary particle size is 0.1 μm to 1 μm and a secondary particle size is 1 μm to 10 μm; (2) in an X-ray powder diffraction measurement using CuKα radiation, a crystallite size in the peak within 2θ=18.7±1° is 100 Å to 1200 Å and a crystallite size in the peak within 2θ=44.6±1° is 100 Å to 700 Å; and (3) in a pore distribution obtained by a mercury intrusion method, a pore peak exists in a range where the pore size is 10 nm to 200 nm and a pore volume in the said range is 0.01 cm³/g to 0.05 cm³/g.

The invention discloses a coal full-pore-diameter measuring and pore shape semi-quantifying method. A mercury intrusion method and a liquid nitrogen adsorption method are organically combined to analyze the change condition of the coal pore volume along with the grain size change, a mercury intrusion method is selected for measuring the pore diameter section larger than 20 nm, a liquid nitrogen adsorption method is used for measuring the pore diameter section smaller than 20 nm, a theoretical calculation method is adopted for obtaining the number of particles contained in each gram of coal, then the full-pore-diameter pore volume distribution characteristic of single-particle coal is obtained, the pore length distribution data of the single-particle coal are obtained through a theoretical calculation formula, and a semi-quantitative coal pore shape is obtained through the coal pore shape distribution characteristic. A more visual observation method is provided for researching adsorption or desorption in gas in coal.

The invention provides a method of producing a solid state lithium battery module in which the occurrence of short circuit caused by dendrites is suppressed. The invention solves this problem by providing a method of producing a solid state lithium battery module, including steps of: a pressing step of pressing a sulfide glass having an ion conductor containing a Li element, a P element, and a S element, and forming a solid electrolyte layer; and a restraining step of restraining a solid state lithium battery including the solid electrolyte layer, using restraining member, wherein, in the pressing step, the solid electrolyte layer is formed such that the average pore radius obtained by a mercury intrusion method is R (μm), and in the restraining step, the solid state lithium battery is restrained such that when the confining pressure is designated as P(MPa), the relationship: P≦−5900R+74 is satisfied.

An evaluation method for different types of pore evolution in shale is related, which is applied to the field of unconventional oil and gas research. As the shale depth or maturity increases, different types of pores (including intergranular pores, intragranular pores, organic pores and fractures) developed in shale are constantly changing, which is important for shale oil and gas accumulation. The present invention starts from the high-resolution scanning electron micrography of shale, and respectively extracts the areal porosity of different types of pores based on the division criteria of different types of pores and pore identification in the established shale, and combines the low-temperature N₂, CO₂ adsorption experiments and the high-pressure mercury intrusion experiments to obtain the total pore volume and establish the evolution chart of different types of pores. The proposed method has an important application value for the exploration of unconventional shale oil and gas resources.

The invention provides a characterizing method for pore volumes of full apertures of shale. The characterizing method comprises the following steps: (1) respectively dewatering and degassing a columnar shale, first powdered shale and second powdered shale in sequence; (2) analyzing the columnar shale by a high-pressure mercury intrusion method, and obtaining a pore volume of each aperture within a first aperture range according to a washburn equation; (3) analyzing the first powdered shale by a nitrogen adsorption method, and obtaining a pore volume of each aperture within a second aperture range according to a BJH model; (4) analyzing the second powdered shale by a carbon dioxide adsorption method, and obtaining a pore volume of each aperture within a third aperture range according to a DFT model; (5) obtaining a pore volume of each aperture within a superposition range by a weighted average method according to the superposition range among the first aperture range, the second aperture range and the third average range. According to the characterizing method, the full apertures of a shale pore structure are objectively and reasonably characterized, and the method is greatly significant for correctly evaluating a shale reservoir.

A heavy oil hydrotreating catalyst and its preparation and application. The catalyst contains a halogen bimodal pore alumina carrier and a hydrogenation active metal component loaded on the carrier. Represented by a mercury intrusion method, pore volume of the carrier is 0.95-1.2 ml/g, specific surface area is 50-300 m<2>/g, and the carrier presents bimodal pore size distribution at the diameter of 10-30nm and at the diameter of 300-500nm. Pore volume of pores with the diameter of 10-30nm accounts for 55-80% of the total pore volume, and pore volume of pores with the diameter of 300-500nm accounts for 10-35% of the total pore volume. The hydrogenation active metal component is selected from at least a VIB group metal component and at least a VB group metal component. Metered based on oxides and with the catalyst as the standard, content of the VIB group metal component is 0.2-15 wt%, and content of the VB group metal component is 0.2-12 wt%. In comparison with catalysts provided in the prior art, the catalyst provided by the invention has the advantage as follows: hydrodemetallization and diasphaltene activities are raised obviously.

The invention provides a method for multi-scale representing of dense reservoir pore throat characteristics based on high-pressure mercury intrusion. The method comprises the following steps that thepermeability K and the porosity phi of a rock core are determined under the original stratum covering condition; a high-pressure mercury intrusion experiment is carried out on the rock core to obtainthe external mercury inlet pressure Pi, the hole throat radius ri in the case of the mercury inlet pressure Pi, and the mercury inlet saturation increment delta Si in the case when the mercury inlet pressure is changed from Pi-1 to Pi; the relevant new parameters of pores and throats of stages, and pore throats of stages are calculated, then correlation analysis with the porosity phi and the permeability K are conducted, and main control factors of the permeability of a reservoir are determined; and the real existence of the pore throats of stages is verified by the aid of a scanning electronmicroscope, the width of hole diameters of the pore throats is measured, and the width is compared with the hole diameter distribution obtained by the above algorithm. According to the method, mathematical, physical and other theoretical formulas are applied for processing relevant mercury intrusion data based on data provided by the high-pressure mercury intrusion, so that a new algorithm is formed to represent micro-pore throat characteristics and the permeability of fluid in a micro-pore throat.

The invention relates to an effective soil pore diameter and distribution parameter testing method. The method is applicable to quantifying soil pores and distribution of the soil pores. The method comprises the steps that firstly, the porosity and permeability coefficients of a soil sample are tested; secondly, the pore tortuosity of the soil sample is tested; thirdly, a breakthrough curve of the soil sample is tested; fourthly, the maximum effective radius and the minimum effective radius of the pores of the soil sample are calculated; fifthly, the average effective pore diameter of the soil sample is calculated; sixthly, the pore diameter distribution parameters of the soil sample are calculated. The effective pore diameter and distribution of the soil sample are tested, operation is easy, and the testing cost is low; on the basis of the breakthrough curve of the soil sample on water, the soil pore diameter and distribution are analyzed, and the influence of dead end pores on a testing result can be avoided; compared with a mercury intrusion method, the size of the soil sample is large, and the test result can effectively reflect macro parameters of soil.

A hydrogenation demetalization catalyst for heavy oil, and preparation and applications thereof are disclosed. The catalyst comprises a carrier and hydrogenation active metal components, wherein the carrier is a double-peak pore aluminum oxide carrier containing metals of the IVB group. By representation by a mercury intrusion method, the pore volume of the carrier is 0.6-1.4 mL/g, the specific surface area is 80-400 m<2>/g, the pore volume of pores having a diameter of 5-20 nm is 30-60% of the total pore volume, and the pore volume of pores having a diameter of 100-300 nm is 15-45% of the total pore volume. Compared with the prior art, the catalyst has better hydrogenation deasphalting and demetallation properties when the catalyst is used for hydrogenation processing of residual oil.