高硅NaY型分子筛的合成与改性研究  

Synthesis and modification of high-silica NaY zeolite

作　　者：赵晓争 徐安平[2] 王宝杰 赵红娟 申宝剑[3] 张莉 石晓庆 刘超伟 

机构地区：[1]中国石油兰州化工研究中心,甘肃兰州730060 [2]中国石油兰州石化公司催化剂厂,甘肃兰州730060 [3]中国石油大学(北京),北京102200

出　　处：《石化技术与应用》2009年第2期107-111,共5页Petrochemical Technology & Application

基　　金：中国石油天然气股份有限公司研发项目(050203-01-04)

摘　　要：采用直接法合成了高硅铝比NaY分子筛,并实现了母液回用。所制备NaY分子筛的硅铝比较常规NaY分子筛提高了1个数值,用峰面积法测得其相对结晶度大于85%,同时具有小晶粒的特点。稀土改性研究结果表明,在低稀土含量和苛刻焙烧条件下,更能发挥高硅铝比NaY分子筛的高稳定性优势。采用低稀土两交一焙工艺制备的高硅铝比Y型分子筛其模式催化剂的微反活性可达57%。High- silica NaY zeolite was synthesized by direct method and the mother liquid were reused. The molar ratio of SiO2 to Al2O3 of the synthesized NaY zeolite was one unit higher than that of commercial NaY. XRD characterization showed that the relative crystallinity of the high -silica NaY was more than 85% , and SEM observation showed that its particle size was smaller. The results of rare earth modification showed that under the conditions of exchange with low content of Re^3＋ and severe calcination, hydrothermal stability of highsilica NaY was significantly higher than that of commercial NaY. Micro reactive activity test indicated that the model catalyst prepared by modified high - silica NaY （ two times Re^3＋ ion exchange and one time calcination route） had 57% activity.

关 键 词：Y型分子筛 硅铝比 直接合成法 稀土改性 微反活性 

分 类 号：TE624.92[石油与天然气工程—油气加工工程]