碳吸附剂
在碳和树脂吸附剂研究和产品开发方面，我们拥有50多年的丰富经验。我们的特种碳吸附剂完整产品线包括碳分子筛（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。为方便您经济高效地评估我们的几种特种碳吸附剂，我们还提供试用套件。
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相关产品资源
- 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
Carboxen® 合成型 碳吸附剂 是高度工程化的衍生树脂。这款吸附剂具有从大孔到中孔再到微孔的锥形孔隙结构，提高了吸附剂的动力学和热力学效率。吸附剂颗粒为球形，具有最佳的填料床效率。高度工程化的衍生树脂具有出色的耐磨性，能够实现高流速而不产生不希望的背压累积。设计最大承受压力16,000 psi。它们在400˚C以下结构稳定，并可针对特定靶标分析定制表面化学成分。高纯度、球形和出色的机械性能使其非常适合用于制备和工艺色谱。这些材料以干燥的微珠形式储存，并能像液体一样流动，与湿树脂相比，操作和色谱柱填料变得更容易。
Carboxen®合成碳的pH值可在2.5至10.5之间定制。Carboxen® 合成碳由合成来源生产的，因此本身不含重金属和其他天然来源吸附剂中的无机成分。Carboxen®合成碳吸附剂可扩大化生产，即可生产吨级的20/40、20/45或30/45目规格的此类吸附剂。可小规模供应更小粒径的Carboxen®产品。
这些衍生树脂为用于去除小分子和大分子杂质的一系列广泛纯化应用带来了价值。它们可用于气相和液相纯化。其应用实例包括去除生物化学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以及去除可提取物和可浸出物。
它们在几次任务中得到了NASA的信任，包括目前在国际空间站的使用。
查看完整文章：https://www.sigmaaldrich.com/US/en/life-science/supelco/supelco-products-in-space
八种批量供应的Carboxen®合成碳的材料性质请见下表。
Carboxen®合成碳材料性质
Carbosieve® 吸附剂
Carbosieve® 吸附剂 是具有非锥形孔的碳分子筛。由于具有微孔结构，它们具有超强的吸附力。对于大多数其他吸附剂难以保留的小型和挥发性分析物，Carbosieve®吸附剂具有良好的保留效果。
石墨化碳黑
Carbopack™ 和 Carbotrap® 吸附剂 为石墨化炭黑，是无孔非特异性吸附剂，具有高度表面均一性。这两款吸附剂纯度高，确保有效解吸相关分析物。由于具有疏水表面特性，它们可以有效地捕集潮湿物料流中的有机化合物。捕集的化合物可以通过溶剂或热解吸方法解吸，解吸效率达到100%。这类吸附剂具有出色的热稳定性，确保在热解吸温度下溢流量极小并可避免高压降。
Graphsphere™ 吸附剂
球形石墨化聚合物碳（Graphsphere™）具有独特的结构，以及无定形核心和厚度可控的石墨化外壳。石墨化过程形成高纯度表面，具有独特的吸附和解吸特性。表面相互作用完全取决于色散（伦敦）力。这些材料具有以下特征：
- 球形（比粒状颗粒具有更好的填充床性能）
- 坚硬、不易碎
- 适用于分析物大小相当于C5-C12正烷烃的分子
- 疏水性（可用于高湿度环境）
与碳分子筛吸附剂相比，Graphsphere™ 吸附剂 提供较弱的相对吸附强度，而与石墨化碳吸附剂相比具有相似的相对吸附强度。
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