石油化工2011，Vol.40Issue(8)：820-824,5.
采用两步晶种法在大孔 α-Al2O3载体上合成NaA沸石膜
Preparation of NaA Zeolite Membrane on Macroporous α-Al2O3 Support by Two-Step-Seeding Method
摘要
Abstract
NaA zeolite membranes were prepared by modification of macroporous α-Al2O3support, which included dip-coating with 2 μm size seed crystals, wiping for seeding smaller crystals with the size of about 400 nm to form a continuous and homogeneous seed layer on the support surface, and dynamically hydrothermally synthesizing the membranes on the seeded support surface in a rotating oven. The prepared NaA zeolite membranes were characterized by means of SEM and XRD. The results indicated that the prepared membranes were continuous and dense, and could be prepared repeatedly. Pervaporation experiments were carried out under 353 K and 200 - 300 Pa in a water/ethanol system with 90% (w) ethanol concentration to test performance of the synthesized membranes. The result showed that the water flux reached 1.8 kg/(m2 · h) and the separation factor was more than 10 000.关键词
NaA沸石膜/热浸渍-擦涂法/大孔α- Al2O3载体/渗透汽化Key words
NaA zeolite membrane/ hot dip-coating and wiping/ macroporous α-Al2O3 support/ pervaporation分类
化学化工引用本文复制引用
盛春光,杨建华,殷德宏,鲁金明,陈赞,王金渠..采用两步晶种法在大孔 α-Al2O3载体上合成NaA沸石膜[J].石油化工,2011,40(8):820-824,5.基金项目
中央高校大连理工大学重大项目培育基金项目(851003). （851003）
