VINYLIDENE CHLORIDE COPOLYMER-BASED CARBON MOLECULAR SIEVE ADSORBENT COMPOSITIONS AND PROCESSES THEREFOR
    3.
    发明公开
    VINYLIDENE CHLORIDE COPOLYMER-BASED CARBON MOLECULAR SIEVE ADSORBENT COMPOSITIONS AND PROCESSES THEREFOR 审中-公开
    ON偏基于碳分子筛吸附组合物及其方法

    公开(公告)号:EP3160639A1

    公开(公告)日:2017-05-03

    申请号:EP15741654.6

    申请日:2015-06-22

    摘要: Novel carbon molecular sieve (CMS) compositions comprising carbonized vinylidene chloride copolymer having micropores with an average micropore size ranging from 3.0 to 5.0. These materials offer capability in separations of gas mixtures including, for example, propane/propylene; nitrogen/methane; and ethane/ethylene. Such may be prepared by a process wherein vinylidene chloride copolymer beads, melt extruded film or fiber are pretreated to form a precursor that is finally carbonized at high temperature. Preselection or knowledge of precursor crystallinity and attained maximum pyrolysis temperature enables preselection or knowledge of a average micropore size, according to the equation ?=6.09+(0.0275×C)−(0.00233×T), wherein ? is the average micropore size in Angstroms, C is the crystallinity percentage and T is the attained maximum pyrolysis temperature in degrees Celsius, provided that crystallinity percentage ranges from 25 to 75 and temperature in degrees Celsius ranges from 800 to 1700. The beads, fibers or film may be ground, post-pyrolysis, and combined with a non-coating binder to form extruded pellets, or alternatively the fibers may be woven, either before or after pre-treatment, to form a woven fiber sheet which is thereafter pyrolyzed to form a woven fiber adsorbent.

    摘要翻译: 新颖碳分子筛(CMS)的组合物,其包含具有与平均微孔尺寸范围从3.0至5.0微孔碳化偏二氯乙烯共聚物。 这些材料提供了在气体混合物中包括的分离能力,例如,丙烷/丙烯; 氮气/甲烷; 和乙烷/乙烯。 搜索可以通过一个方法worin偏二氯乙烯共聚物珠粒制备,熔融挤出薄膜或纤维进行预处理,以形成前体并在高温下最后碳化。 预选或前体结晶的知识和达到最高热解温度启用预选或平均微孔尺寸的知识,雅丁等式? = 6:09 +(0.0275 X C) - (0.00233 x深),worin? 是在埃的平均微孔尺寸,C是结晶度百分比,而T是摄氏达到最高热解温度,提供没有结晶度的百分比范围为25至75和度的温度范围摄氏800〜1700。珠粒,纤维或 膜可以是地面,热解后,用未涂覆的粘合剂组合,以形成挤出的丸粒,或可替代地,纤维可以是纺织的,之前或预处理后,以形成织造纤维片材的所有其随后热解,以形成 织造纤维吸附剂。