φ沸石的合成  

Synthesis of φ Zeolite

作　　者：李宏愿[1] 梁娟[1] 温广义 刘子明[1] 应慕良[1] 

机构地区：[1]中国科学院大连化学物理研究所,116023

出　　处：《石油化工》1990年第3期148-152,共5页Petrochemical Technology

摘　　要：大孔(10.2)φ沸石已用水热法合成。以四甲基氢氧化铵(Me_4NOH)为模板剂,在特定条件下(H_2O/SiO_2+Al_2O_3+Na_2O=23.5,Me_4NOH/SiO2+Al_2O_3+Na_2O=0.21),SiO_2-Al_2O_3-Na_2O 三组份相图上给出的形成φ沸石的组成范围为:SiO_2/Al_2O_3=4.3-10.0,Na_2O/SiO_2=0.036-0.42。当 H_2O、SiO_2、Al_2O_3、Na_2O 恒定时,产生纯φ沸石的 Me_4NOH/SiO_2比为0.21-0.32。实验发现,在空气中焙烧,φ沸石的结晶度下降较快,在合适的保护气氛下焙烧是必要的。A novel zeolite,zeolite φ,was prepared by hydrothermal synthesis.The appro-priate composition zone of reactants for the formation of pure φ zeolite(SiO_2/Al_2O_3=4.3—10.0 and Na_2O/SiO_2=0.036—0.42)was given in SiO_2-Al_2O_3-Na_2O phasediagram under specific conditions(H_2O/SiO_2+Al_2O_3+Na_2O=23.5 and Me_4NOH/SiO_2+Al_2O_3+Na_2O=0.21).In the case of H_2O/SiO_2+Al_2O_3+Na_2O=23.5 and Na_2O:Al_2O_3:SiO_2=4:1:9.5,when Me_4NOH/SiO_2=0.21—0.32,the product is pure φ zeolite.Itwas found that decrease in crystalinity of φ zeolite was faster when the samplewas calcinated in air.Thus it is necessary to keep the sample under a protectiveatmosphere during calcination.

关 键 词：φ型 沸石 分子筛 合成 

分 类 号：TE624.99[石油与天然气工程—油气加工工程]