碳吸附剂
我们在碳和树脂吸附剂的研究和产品开发方面拥有 50 多年的经验。我们的全系列特种碳吸附剂包括碳分子筛（Carboxen® 和 Carbosieve™）、球形石墨化聚合物碳（Graphsphere™）和石墨化炭黑（Carbotrap® 和 Carbopack™）吸附剂。我们还提供采样器套件，这是一种评估我们几种特种碳吸附剂的经济有效的方法。
产品
Products
相关资源
- Application Note: Rhodium and Palladium Metal Scavenging with Carboxen® Synthetic Carbon Adsorbents
The ICH-Q3D-R2 guidelines on permissible elemental impurity levels in drug products require a metal scavenging clean-up step for many active pharmaceutical ingredients (APIs). Organometallic catalysts based on palladium and rhodium are commonly used as process catalysts for the synthesis of APIs. These metals fall under Class-2B of the ICH-Q3D-R2 guidelines, with an oral consumption limit of 10 ppm.
- Application Note: Surface Chemistry of Synthetic Carbon Adsorbents and their Application in the Adsorption of Amines
Activated carbons are widely used for purification and separation applications, such as purification of permanent gases, removal of volatile organic compounds from streams of gases and liquids, hydrocarbon vapor recovery, purification of active pharmaceutical ingredients, and preparing electrode materials in energy storage devices.
- Application Note: Carboxen® Synthetic Carbon Adsorbents for Host Cell Protein Removal During Monoclonal Antibody Purification
The demand for mAbs is steadily increasing while the depletion of host cell proteins (HCP) in the manufacturing of mAbs remains a challenge. HCPs can represent an immune response risk after the administration of mAbs if not reduced to appropriate levels.
- White Paper: Carboxen® Synthetic Carbon Adsorbents for Industrial Water Purification
This paper summarizes a selection of field studies that utilized Carboxen® 563 Synthetic Carbon for the purification of chemical wastewater and contaminated groundwater.
- Brochure: Specialty Carbon Adsorbents Advanced Materials for Industrial Purifications and Separations
Our specialty carbon adsorbents are highly engineered materials, manufactured from highly pure synthetic polymers. These products are then activated by physical means, avoiding the use of chemicals to activate. This differentiates them from common non-specific, low-tech carbon black and activated carbon adsorbents.
- Brochure: Resins Selection Guide
Low pressure liquid chromatography (LPLC) is the oldest of chromatographic techniques, originally performed with open columns that use gravity to move the sample through the packing bed. Now, pumps and other instrumentation have been incorporated into LPLC and superior packing media have been developed specifically for this versatile technology.
Carboxen® 吸附剂
The Carboxen®合成碳吸附剂是高度工程化的衍生树脂。它们具有从大孔到中孔再到微孔的锥形孔结构。锥形孔提高了吸附剂的动力学和热力学效率。颗粒呈球形，可实现最佳的填料床效率。高度工程化的衍生树脂具有出色的耐损耗性，可实现高流速，而不会产生不希望的背压积聚。它们可承受高达 16,000 psi 的压力。它们的稳定性高达 400 ˚C，并具有可定制的表面化学成分，可用于特定目标分析。它们具有高纯度、球形和出色的机械性能，非常适合用于制备色谱和过程色谱。与湿树脂相比，这种材料以干珠形式储存，流动性好，易于处理和色谱柱填料。
Carboxen® 合成碳的 pH 值可在 2.5 到 10.5 之间定制。由于 Carboxen® 合成碳是人工合成的，因此不含重金属和其他天然吸附剂中含有的无机物。Carboxen®合成碳吸附剂具有可升级性，这意味着可以生产成吨的 20/40、20/45 或 30/45 目吸附剂。
这些衍生化树脂为广泛的净化应用带来了价值，可去除小分子和大分子杂质。它们既可用于气相纯化，也可用于液相纯化。一些例子包括去除生化纯化中的高风险杂质（如宿主细胞蛋白）、去除有毒重金属、纯化氯化金属、纯化 API 以及去除可萃取物和可浸出物。
它们在多项任务中得到了美国国家航空航天局（NASA）的信任，包括目前在国际空间站上的使用。
点击此处查看全文：https://www.sigmaaldrich.com/US/en/life-science/supelco/supelco-products-in-space
下表列出了八种 Carboxen® 合成碳的 Bulk scale 材料特性。
Carboxen®合成碳材料特性
Carbosieve® 吸附剂
The Carbosieve®吸附剂是一种具有非锥形孔的碳分子筛。它们具有微孔结构，因此吸附强度非常高。碳筛®吸附剂可出色地吸附其他大多数吸附剂难以吸附的小分子和挥发性分析物。
石墨化炭黑
基于石墨化炭黑的Carbopack™和Carbotrap®吸附剂是无孔、非特异性吸附剂，具有很高的表面均匀性。这些吸附剂的高纯度可确保有效解吸相关分析物。这些吸附剂具有疏水表面特性，因此可以有效地用于捕集潮湿气流中的有机化合物。被捕集的化合物可以通过溶剂或热解吸附进行解吸，解吸效率高达 100%。这些吸附剂具有出色的热稳定性，可确保在热解吸温度下将渗出降至最低，并防止高压下降。
Graphsphere™ 吸附剂
Graphsphere™ 吸附剂球形石墨化聚合物碳（Graphsphere™）具有独特的结构，内核为无定形，外层为厚度可控的石墨化外壳。石墨化过程产生了具有独特吸附和解吸特性的高纯度表面。表面相互作用完全取决于分散力（伦敦力）。这些材料是
- 球形（比颗粒状粒子具有更好的堆积床性能）
- 坚硬且不易碎裂
- 适用于分析物尺寸相对于 C5-C12 n-烷烃的分子
- 疏水性（可用于高湿度环境）
如要继续阅读，请登录或创建帐户。
暂无帐户？