丝光沸石骨架脱硅与介孔改性研究  

Mesopore Modification of MOR Zeolites Via Desilication of Framework

作　　者：谷迎秋[1] 李勇[2] 秦菲 杜夏梅[1] 徐丽颖[1] 金英杰[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]中国寰球工程公司辽宁分公司,辽宁抚顺113006 [3]中石化西北油田分公司塔河采油二厂,新疆库尔勒841604

出　　处：《当代化工》2013年第7期893-896,933,共5页Contemporary Chemical Industry

摘　　要：采用碱溶和酸洗过程对合成的MOR沸石进行骨架脱硅与介孔改性。结果表明,碱溶-酸洗联合处理促进MOR骨架选择性脱硅和晶内介孔的形成;脱硅沸石的相对结晶度和产率随介孔率的增加呈下降趋势。辅以酸洗可调整碱处理沸石的硅铝比,改进其酸强度分布和介孔率。The mordenite（MOR） samples were synthesized and mesopore-modified by desilication of framework with a united alkali dissolution and acid washing process.The results reveal that the combination of alkaline treatment and acid extraction can facilitate the selective desilication of MOR framework and the formation of intercrystal mesopores,and relative crystallinity and yield of the desilicated MOR zeolites decrease with the increase of mesoporosity.Moreover,for the alkaline-treated zeolites,the consequent acid extraction can adjust the Si / Al ratio to improve the acid strength distribution and mesoporosity.

关 键 词：丝光沸石 碱-酸处理 介孔率 硅铝比 产率 

分 类 号：TQ426.65[化学工程]