Characterization of solids, e.g. Zeolites , by Inverse Gas Chromatography (IGC) deliversprecise and  unique values about surface energy, size exclusion and acid/base properties.Proven software, as our own development, experience and proven operation conditionsare requirements, while the use of standard GCs allows great flexibility plus 2 channels.The BEA t ype zeolite has h igher surface energy γsd than Silicalite-1, 237 vs. 192 mJ/m2, whereas Silicalite-1 shows a very strong size exclusion effect. BEA is more polar and has stronger electron donor (acid) andacceptor (base) properties.

反气相色谱表征分子筛。提供表面能，气体排阻，酸碱常数特性等参数