太原理工大学学报2017，Vol.48Issue(6)：887-892,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2017.06.002
阳离子聚丙烯酰胺絮凝回收利用SAPO-34分子筛母液
Recycling of SAPO-34 Molecular Sieve Mother Liquor by Using Cationic Polyacrylamide Flocculant
摘要
Abstract
Effective components from the crystallized mother liquor of zeolite catalysts were recovered by cationic polyacrylamide and dilute hydrochloric acid flocculation method,dried and ground into powder.After adding to the components a certain amount of silicon aluminum and other raw materials,hierarchical SAPO-34 molecular sieve with sheet stacking was synthesized by dry gel conversion method.The results show that mesoporous SAPO-34 molecular sieve gave a pore volume as high as 0.40 cm3/g,a catalytic life time of 200 min and a selectivity of light olefin (ethylene + propylene)of 87% for MTO reaction.The synthesis approach turns out to be sim-ple,economical and efficient.关键词
聚丙烯酰胺/晶化母液/SAPO-34/干胶转化/多级孔/MTOKey words
plyacrylamide/mother liquor/SAPO-34/DGC/hierarchical/MTO分类
化学化工引用本文复制引用
狄春雨,李志宏,何祖光,窦涛,范彬彬..阳离子聚丙烯酰胺絮凝回收利用SAPO-34分子筛母液[J].太原理工大学学报,2017,48(6):887-892,6.基金项目
国家自然科学基金资助项目(20973123) （20973123）
山西省火炬计划资助项目(2014061002-01) （2014061002-01）
