BET 分析仪用于测量比表面积和孔径大小 BELSORP MINI X

For simple, fast and highly accurate characterization of porous materials Microtrac’s BELSORP MINI X’s outstanding features result in world class repeatability, with significantly reduced measurement time. The MINI X is equipped with up to 4 sample measurement ports and new high-throughput functions including multi-device control. The BELSORP MINI X is meticulously designed to measure specific surface area, pore size distribution and pore volume with extreme accuracy. Equipped with dedicated pressure sensors on each sample measuring port and a dedicated port for saturated vapor pressure, it enables completely independent simultaneous measurements. The new measurement software improves user productivity by streamlining measurement procedures with in software step-by-step instructions, displaying the measurement progress and sending the measurement results via e-mail. Depending on your sample throughput, a 3-port and 4-port models are offered. Additionally, the new analysis software (BELMASTER TM ) enables structural evaluation of a wider range of materials than ever before.

World Class Levels of Reproducibility

Gas adsorption isotherm & NET adsorption measurement through AFSM TM 2 without the need of He-gas

Multiple Measurement Methods: High-precision measurements, multi-sample measurement, and quick BET measurement modes to suit your purpose

Dedicated pressure transducer for each port

Simultaneous control of up to 20 measurement ports via multi-device control (5 units)

IoT: Process monitoring via e-mail notification system

BET 分析仪用于测量比表面积和孔径大小 BELSORP MINI X 主要功能

BET specific surface areas from 0.01 m 2 /g ~ (N 2 ) and pore size distribution from 0.7 ~ 500 nm (option: 0.35 ~ 500 nm by molecular probe method).

Simultaneous Measurement of Multiple Samples Up to 4 specimens can be measured simultaneously, enabling the measurement times for multiple samples to be shortened significantly.

Multiple Measurement Options This instrument brings together highly accurate measurements with several high throughput modes (e.g. Quick BET mode, Gas Dosing Optimization). It can be used flexibly depending on customer needs, while integrated step-by-step instructions make it easy to use even for inexperienced users.

Ease of Use: Simple Setting of Measurement Software The BELSORP MINI X is a fully automatic measurement system that enables the user to easily set the measurement conditions using Simple Mode. This mode allows for accurate measurements with minimal sample information (e.g. pre-treatment conditions and measuring range). This is particularly useful for unknown materials. Detailed measurement configurations can be set by experienced users in Professional mode. This system allows anyone to easily obtain accurate measurement results.

Gas Dosing Optimization (GDO) Simple Mode includes the Gas Dosing Optimization (GDO) option, which automatically calculates the optimal gas dosing amount from previous measurement results. With this function, the measurement set points can be reliably obtained and the measurement times can be reduced significantly.

1. 加载现有等温线 | 2. 显示预期等温线 | 3. 测量范围输入 | 4. 自动优化条件，例如气体引入量 |

Innovative Free Space Measurement for Highest Accuracy (AFSM TM ) With AFSM TM , the level control of liquid coolant (e. g. liquid nitrogen or argon) is not necessary anymore. Instead, we have adopted our groundbreaking, continuous free space measurement method, the patented Advanced Free Space Measurement (AFSM TM ). This method has achieved highest reproducibility by using a reference cell (empty sample cell; same type of sample cell used for measurement) to follow the second-to-second changes of free space. Our instrument determines an initial free space of the sample cell and reference cell. Since the change of the free space is equal in both cells (same environmental conditions), the free space change can be continuously followed by the pressure change of reference cell. Free space fluctuations caused by environmental factors can be considered: LN 2 level changes Atmospheric temperature / pressure changes Temperature changes of coolant due to oxygen dissolution With this superior technique, environmental factors can be taken into account that were not considered before. For more information, please use our knowledge base.

Atmospheric temperature / pressure changes

Temperature changes of coolant due to oxygen dissolution

1. 房间温度变更 | 2. P ref | 3. P smp | 4. 初始压力 | 5. 样品管温度会随着 LN 2 水平的变化而变化 | 6. 液氮温度因氧溶解而发生变化 | 7. AFSM | 8. 样本

Adsorption Measurement Without Using Helium Gas (AFSM TM 2) In a first step the free space measurement for a blank sample cell and a blank reference cell is performed with the adsorptive gas at the appropriate adsorption temperature. Then, the adsorption measurement can be achieved by utilizing both cells without using helium gas. In the same measurement condition, since the free space changes for both cells are same, the measurement results can be obtained in shorter measurement time. There is no need for time consuming operations such as keeping the liquid level of coolant constant between the blank measurement and adsorption measurement of the free space.

1. 用于连续测量自由空间内波动的参考池 | 2. 参考单元格 | 3. 样品池 | 4. 液位 1 | 5. 液位 2

AFSM2 （无 He 法）：第 1 步 -->4 -->7 -->8 -->9

Compact & Lightweight Through complete optimization and rationalization of the materials, we succeeded in reducing the device size and weight.

Optional Pretreatment of Samples at Measurement Port For an accurate adsorption measurement, a pretreatment of the samples is required. The pretreatment process (often called an activation process) is usually performed by applying vacuum under heat to remove adsorbed gas and/or water molecules from the surface of the material without affecting the sample structure (avoid denaturation). Microtrac offers two options for sample pretreatment. Firstly, it can be performed externally using BELPREP VAC II or VAC III, which is usually preferred to increase sample throughput. Alternatively, the activation process can be performed directly at the measurement port of the BELSORP MINI X using a heater (see accessories list). Using the heater accessory, a transfer from the external pretreatment device to the measuring port can be avoided, which is an important option for sensitive (e.g. hydrophilic) samples.

Data Analysis The analysis software BELMASTER allows users to obtain a wide variety of analysis results through operations, such as displaying adsorption / desorption isotherms, evaluating specific surface areas using BET method etc., evaluating pore volumes (from ultra-micro- to meso- and macropores) by applying the t-plot or αS method. Further, conducting mesopore analysis using the DH and BJH methods, micropore analysis using the HK or SF methods, or optional GCMC / NLDFT analysis are possible. Even more analysis options are given in our BELMASTER analysis software.

轻松将杜瓦瓶更换为水浴，测量温度范围为 -10°C 至 70°C。需要一个冷藏/加热的循环器。

样品在 50°C 至 450°C 的温度下进行原位预处理。使用此选项，可以直接在测量端口对样品进行预处理，而无需在分析前转移样品池。特别适用于敏感样品。

气体选择器可同时连接多达 4 个吸附物（1 x 氦气 + 4 x 吸附剂）。

BET 分析仪用于测量比表面积和孔径大小 BELSORP MINI X 典型应用

Microtrac 的气体吸附分析仪适用于许多领域。其中包括催化剂、电池、纤维、聚合物材料、沸石、燃料电池、化学品、颜料、化妆品、MOF-CP、磁粉、分离膜、过滤器、调色剂、水泥、陶瓷、半导体等等。

BET 分析仪用于测量比表面积和孔径大小 BELSORP MINI X 技术参数