G74 催化剂基础标准与通用方法 标准查询与下载



共找到 362 条与 催化剂基础标准与通用方法 相关的标准,共 25

本标准规定了一氧化碳低温变换催化剂常压活性试验方法。本标准适用于合成氨及制氢装置中一氧化碳加水蒸气制氢的一氧化碳低温变换催化剂。

Test method of activity for low temperature carbon monoxide shift catalysts in ordinary pressure

ICS
71.100.99
CCS
G74
发布
2012-12-28
实施
2013-06-01

本标准规定了一氧化碳低温变换催化剂的加压活性试验方法。本标准适用于合成氨及制氢装置中一氧化碳加水蒸气制氢的一氧化碳低温变换催化剂。

Test method of activity for low temperature carbon monoxide shift catalysts in high pressure

ICS
71.100.99
CCS
G74
发布
2012-12-28
实施
2013-06-01

Method for Analyzing Chemical Components of Methanol Synthesis Catalysts

ICS
CCS
G74
发布
2012-07-01
实施
2012-07-01

Pore volume distribution curves obtained from nitrogen sorption isotherms provide one of the best means of characterizing the pore structure in porous catalysts, provided that the limitations of the method are kept in mind. Used in conjunction with the BET treatment for surface area determination (4), these methods provide an indispensable means for studying the structure associated with pores usually important in catalysts. This practice is particularly useful in studying changes in a series of closely related samples caused by treatments, such as heat, compression, or extrusion often used in catalyst manufacturing. Pore volume distribution curves can often provide valuable information during mechanistic studies dealing with catalyst deactivation.1.1 This practice covers the calculation of pore size distributions for catalysts and catalyst carriers from nitrogen desorption isotherms. The computational procedure is particularly useful for determining how the pore volume is distributed in catalyst samples containing pores whose sizes range from approximately 1.5 to 100 nm (15 to 1000 ?) in radius. It should be used with caution when applied to isotherms for samples containing pores both within this size range and pores larger than 100 nm (1000 ?) in radius. In such instances the isotherms rise steeply near P/Po = 1 and the total pore volume cannot be well defined. The calculations should be begun at a point on the isotherm near saturation preferably in a region near P/Po = 0.99, establishing an upper limit on the pore size distribution range to be studied. Simplifications are necessary regarding pore shape. A cylindrical pore model is assumed, and the method treats the pores as non-intersecting, open-ended capillaries which are assumed to function independently of each other during the adsorption or desorption of nitrogen. Note 18212;This practice is designed primarily for manual computation and a few simplifications have been made for this purpose. For computer computation, the simplified expressions may be replaced by exact expressions. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Calculation of Pore Size Distributions of Catalysts and Catalyst Carriers from Nitrogen Desorption Isotherms

ICS
71.040.30 (Chemical reagents)
CCS
G74
发布
2012
实施

This test method has been found useful for the determination of the specific surface area of catalysts and catalyst carriers in the range from 0.05 to 10 m2/g for materials specification, manufacturing control, and research and development in the evaluation of catalysts. The determination of surface area of catalysts and catalyst carriers above 10 m2/g is addressed in Test Method D3663.1.1 This test method covers the determination of the specific surface area of catalysts and catalyst carriers in the range from 0.05 to 10 m2/g. A volumetric measuring system is used to obtain at least three data points which fall within the linear BET region. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Determination of Low Surface Area of Catalysts and Catalyst Carriers by Multipoint Krypton Adsorption

ICS
71.040.30 (Chemical reagents)
CCS
G74
发布
2012
实施

本规范规定了飞机用高铱催化剂的要求、质量保证规定和交货准备等。 本规范适用于飞机用的浸渍法制备的FJJ-70高铱催化剂(以下简称催化剂)。

Specification for high loading iridium catalyst of aircraft

ICS
CCS
G74
发布
2011-12-25
实施
2012-04-01

本标准规定了化肥催化剂颗粒抗压碎力测定的仪器、采样、测定步骤和结果计算。 本标准适用于条形、环形、梅花形、圆柱形等颗粒催化剂的径向抗压碎力以及球形颗粒催化剂的点抗压碎力的测定。

Test method for single pellet crush strength of fertilizer catalysts

ICS
71.100.99
CCS
G74
发布
2011-12-20
实施
2012-07-01

本标准规定了化肥催化剂产品的分类、型号构成、命名原则和方法。 本标准适用于合成氨、制酸、合成醇及石油化工生产中所用固体催化剂、净化剂产品的类别划分、型号构成、命名方法的管理工作,也适用于识别化肥催化剂、净化剂产品的类型及其差异。

Classification,type and nomenclature for fertilizer catalyst products

ICS
71.100.99
CCS
G74
发布
2011-12-20
实施
2012-07-01

本标准规定了化肥催化剂磨耗率测定的仪器、采样、测定步骤和结果计算。 本标准适用于圆柱形、条形、无定形、环形和球形等化肥催化剂磨耗率的测定。

Test method for attrition and abrasion of fertilizer catalysts

ICS
71.100.99
CCS
G74
发布
2011-12-20
实施
2012-07-01

This test method is intended to provide information concerning the ability of a catalyst shape to retain physical integrity during use. 1.1 This test method covers determining the resistance of formed catalysts and catalyst carriers to compressive force and is applicable to regular catalyst shapes such as tablets and spheres. Extrudates, granular materials, and other irregular shapes are specifically excluded. 1.2 This test method determines the average crush strength in the range from 0 to 50 lbf (0 to 220 N). Some materials may have crush strengths above 50 lbf (220N); the test method is applicable to these materials, but the precision of the test is not known. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Single Pellet Crush Strength of Formed Catalysts and Catalyst Carriers

ICS
71.040.30 (Chemical reagents)
CCS
G74
发布
2011
实施

This test method can be used to determine particle size distributions of catalysts and supports for materials specifications, manufacturing control, and research and development work.1.1 This test method covers the determination of particle size distribution of catalytic powder material using a sieving instrument and is one of several found valuable for the measurement of particle size. This test method is particularly suitable for particles in the 20 to 420-μm range. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 Exception8212;In 5.2, mesh size is the standard unit of measure. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Particle Size Distribution of Catalytic Materials by Sieving

ICS
19.120 (Particle size analysis. Sieving)
CCS
G74
发布
2011
实施

This test method is intended to provide information concerning the ability of a powdered catalyst to resist particle size reduction during use in a fluidized environment. This test method is suitable for specification acceptance, manufacturing control, and research and development purposes.1.1 This test method covers the determination of the relative attrition characteristics of powdered catalysts by means of air jet attrition. It is applicable to spherically or irregularly shaped particles which range in size between 10 and 180 m, have skeletal densities between 2.4 and 3.0 g/cm3 (2400 and 3000 kg/m3) (see IEEE/ASTM SI-10) and are insoluble in water. Particles less than 20 m are considered fines.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Determination of Attrition and Abrasion of Powdered Catalysts by Air Jets

ICS
71.040.30 (Chemical reagents)
CCS
G74
发布
2011
实施

本标准规定了一氧化碳耐硫变换催化剂中的氧化钴和三氧化钼的测定方法。 本标准适用于钴钼系列的一氧化碳耐硫变换催化剂。

Determination of cobalt and molybdenum content in sulfur-tolerant carbon monoxide shift catalysts

ICS
71.100.99
CCS
G74
发布
2010-11-22
实施
2011-03-01

It is important to recognize that the results obtained by this test method or any other method for particle size determination utilizing different physical principles may disagree. The results are strongly influenced by physical principles employed by each method of particle size analysis. The results of any particle sizing method should be used only in a relative sense and should not be regarded as absolute when comparing results obtained by other methods. Particularly for fine materials (that is, average particle size < 20 μm), significant differences are often observed for laser light scattering instruments of different manufacturers. These differences include lasers of different wavelengths, detector configuration, and the algorithms used to convert scattering to particle size distribution. Therefore, comparison of results from different instruments may be misleading. Light scattering theories (Fraunhofer Diffraction and Mie Scattering ) that are used for determination of particle size have been available for many years. Several manufacturers of testing equipment now have units based on these principles. Although each type of testing equipment utilizes the same basic principles for light scattering as a function of particle size, different assumptions pertinent to application of the theory and different models for converting light measurements to particle size, may lead to different results for each instrument. Furthermore, any particles which are outside the size measurement range of the instrument will be ignored, causing an increase in the reported percentages within the detectable range. A particle size distribution which ends abruptly at the detection limit of the instrument may indicate that particles outside the range are present. Therefore, use of this test method cannot guarantee directly comparable results from different types of instruments. This test method can be used to determine particle size distributions of catalysts and supports for materials specifications, manufacturing control, and research and development work. For fine materials (that is, average particle size < 20 μm), it is critical that Mie Scattering Theory be applied. This involves entering an “optical model” consisting of the “real” and “imaginary” refractive indices of the solid at the wavelength of the laser. The “imaginary” refractive index is also referred to as the “absorbance,” as it has a value of zero for transparent materials such as glass beads. For common materials and naturally occurring minerals (for example, kaolin), these values are known and published, and usually included in the manufacturer’s instrument manual (for example, as an appendix). For example, kaolinite measured at 589.3 nm has a “real” refractive index of 1.55. The absorbance (imaginary component) for minerals and metal oxides is normally taken as 0.001, 0.01 or 0.1. Many of the published values were measured at 589.3 nm (sodium light) but often values at other wavelengths are also given. Extrapolation, interpolation, or estimation to the wavelength of the laser being used can therefore be made. 1.1 This test method covers the determination of the particle size distribution of catalyst and catalyst carrier particles and is one of several found v......

Standard Test Method for Particle Size Distribution of Catalytic Material by Laser Light Scattering

ICS
19.120
CCS
G74
发布
2010
实施

The microactivity test provides data to assess the relative performance of FCC catalysts. Because results are affected by catalyst pretreatment, feedstock characteristics, test equipment, and operating parameters, adherence to this test method is a prerequisite for correct interpretation of results. Apparatus, test conditions, and analytical procedures actually used should closely resemble those described in this test method. Significant variations in apparatus, test conditions and/or analytical procedures may result in activity and selectivity data which do not correlate with data developed by other laboratories on identical catalyst/feedstock samples. The standard method reaction temperature is 960°F (516°C). Other reaction temperatures can be used; however, catalyst selectivity data developed at temperatures other than 960°F (516°C) may not correlate with selectivity data developed at 960°F (516°C). Also, precision at other reaction temperatures may change compared to data obtained at 960°F (516°C).1.1 This test method covers determining the activity and selectivity of either equilibrium or laboratory deactivated fluid catalytic cracking (FCC) catalysts. The activity is evaluated on the basis of mass percent conversion of gas oil in a microactivity unit. The selectivities are evaluated on the basis of mass percent yields of specifically defined products resulting from the catalytic cracking of gas oil. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.2.1 Exception8212;SI units have been retained in some of the figures. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Determining Activity and Selectivity of Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test

ICS
CCS
G74
发布
2010
实施

This test method sets forth a procedure by which catalyst samples can be compared either on an interlaboratory or intralaboratory basis. It is anticipated that catalyst producers and users will find this method of value.1.1 This test method covers the determination of molybdenum in alumina-base catalysts and has been cooperatively tested at molybdenum concentrations from 8 to 18 weight %, expressed as MoO3. Any component of the catalyst other than molybdenum such as iron, tungsten, etc., which is capable of being oxidized by either ferric or ceric ions after being passed through a zinc-amalgam reductor column (Jones reductor) will interfere. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts

ICS
71.040.30 (Chemical reagents)
CCS
G74
发布
2010
实施

This test method sets forth a procedure by which catalyst samples can be compared either on an interlaboratory or intralaboratory basis. It is anticipated that catalyst producers and users will find this method of value.1.1 This test method covers the determination of nickel in fresh alumina-base catalysts and has been tested at nickel concentrations from 2.5 to 60 weight %, expressed as nickel oxide (NiO). 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to its use.

Standard Test Method for Total Nickel in Fresh Alumina-Base Catalysts

ICS
CCS
G74
发布
2010
实施

This test method provides a means of determining the palladium content in fresh catalysts containing molecular sieves. This test method is not intended to cover samples containing precious metals other than palladium.1.1 This test method covers the determination of palladium in molecular sieve-containing fresh catalysts with about 0.5 weight % of palladium. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Palladium in Molecular Sieve Catalyst by Atomic Absorption

ICS
71.040.30
CCS
G74
发布
2010
实施

This test method provides a means of determining the palladium content in fresh catalysts containing molecular sieves. This test method is not intended to cover samples containing metals other than palladium.1.1 This test method covers the determination of palladium in molecular sieve-containing fresh catalysts with about 0.5 weight % of palladium. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Palladium in Molecular Sieve Catalyst by Wet Chemistry

ICS
CCS
G74
发布
2010
实施

本标准规定了一氧化碳耐硫变换催化剂活性的试验方法(低压部分)。 本标准适用于工况压力小于3.0MPa的合成氨及制氢等装置中,使用的一氧化碳加水蒸气制氢的一氧化碳耐硫变换催化剂。

Test method of activity for sulfur-tolerant carbon monoxide shift catalysts(low pressure part)

ICS
71.100.99
CCS
G74
发布
2009-12-04
实施
2010-06-01



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