Specific surface area evaluation - List of Manufacturers, Suppliers, Companies and Products

Specific surface area evaluation Product List

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No. 2 Evaluation of BET Surface Area of Porous Silica

No. 2 Evaluation of BET Surface Area of Porous Silica

This is an introduction to the evaluation of the BET specific surface area of porous silica (Type IV adsorption isotherm)!

This document introduces the evaluation of the BET specific surface area of porous silica (Type IV adsorption isotherm) using graphs and other materials. The specific surface area (surface area per unit mass) of a powder with a certain mass increases with the presence of pores or when the particle size becomes smaller. This specific surface area can be evaluated using the BET theory based on three assumptions derived from the adsorption isotherm. In the case of Type II and IV adsorption isotherms, the BET equation is linear in the range of p/p0 = 0.05-0.3 (the relative pressure range where a monolayer is formed). 【Three Assumptions of BET Theory】 ■ Surface energy is uniform ■ There is no interaction between adsorbed molecules ■ The adsorption energy for the second layer and beyond is equal to the condensation energy *For more details, please refer to the PDF document or feel free to contact us.

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Evaluation of BET specific surface area of No. 3 activated carbon (Type I adsorption isotherm)

Evaluation of BET specific surface area of No. 3 activated carbon (Type I adsorption isotherm)

[Information] Underestimating the specific surface area! An introduction to the evaluation of the BET specific surface area of activated carbon (Type I adsorption isotherm).

This document introduces the evaluation of the BET specific surface area of activated carbon (Type I adsorption isotherm) using graphs and other materials. Activated carbon and zeolites with micropores typically exhibit Type I adsorption isotherms. When evaluating the BET specific surface area of these materials, the large curvature of the micropores and the constraints on the packing of the adsorbate prevent the formation of multilayer adsorption, thus invalidating the BET theory and leading to an underestimation of the specific surface area. This document explains the evaluation method for the BET specific surface area of such Type I materials. *For more details, please refer to the PDF document or feel free to contact us.*

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Evaluation of low specific surface area by Kr adsorption measurement No. 6

Evaluation of low specific surface area by Kr adsorption measurement No. 6

This is a document introducing the evaluation of low specific surface area using Kr adsorption measurement!

This document introduces the evaluation of low specific surface area using Kr adsorption measurements. In the evaluation of low specific surface area materials such as non-porous metal materials, glass substrates, and low-k films, the BET specific surface area is evaluated from the Kr@77.4K adsorption isotherm instead of N2@77.4K. Why is this the case? The document also explains the applicable range. Please take a moment to read it. *For more details, please refer to the PDF document or feel free to contact us.

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No.29 Evaluation of the specific surface area of CB using the BET method

No.29 Evaluation of the specific surface area of CB using the BET method

Implemented using the flow method! Measuring the BET specific surface area of carbon black using "BELCAT"!

This document introduces the evaluation of the BET surface area of carbon black (CB) using the BET single-point method. We will measure the BET surface area of carbon black (M11-02) using "BELCAT" (flow method). As a pre-treatment, M11-02 was placed in a sample tube, which was then connected to the connector port on the heater side. After flowing 30% N2/He, the heater was heated to 305°C and maintained for 2 hours, followed by cooling down to room temperature. The results are explained in detail using graphs. We encourage you to read it. 【Contents】 ■ Overview ■ Experiment ■ Results *For more details, please refer to the PDF document or feel free to contact us.

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Adsorption isotherm measurement and specific surface area evaluation of porous and non-porous carbon materials.

Adsorption isotherm measurement and specific surface area evaluation of porous and non-porous carbon materials.

[Web Seminar] Providing excellent solutions for various applications along with high customer service!

In 2020, Microtrac Bell (Japan), Microtrac (USA), and Microtrac Retsch (Germany) launched a new brand called "Microtrac MRB." As the first installment of a webinar series to mark the launch of the new brand, we will introduce the BET method for evaluating specific surface area obtained from adsorption isotherm measurements, focusing on porous and non-porous carbon used in various battery electrode materials and conductive additives. [Webinar Content] ■ Title: Adsorption Isotherm Measurement and Specific Surface Area Evaluation of Porous and Non-Porous Carbon Materials ■ Presentation Content - What is an adsorption isotherm? Information obtained from it, the process of conducting adsorption isotherm measurements, and points to note - What is the BET specific surface area obtained from adsorption isotherms? Points to consider during evaluation with examples of carbon materials *For more details, please refer to the PDF document or feel free to contact us.

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