原位合成杂原子ZSM-11分子筛及其性能评价  

In-situ synthesis of heteroatomic ZSM-11 zeolite and its catalytic performance evaluation

作　　者：柳黄飞 张莉 王久江 胡清勋 孙雪芹 杨一青 刘宏海 曹庚振 LIU Huang-fei;ZHANG Li;WANG Jiu-jiang;HU Qing-xun;SUN Xue-qin;YANG Yi-qing;LIU Hong-hai;CAO Geng-zhen(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2024年第1期17-22,共6页Petrochemical Technology & Application

摘　　要：采用原位合成法制备了一系列含Fe质量分数不同的杂原子分子筛,利用X射线衍射仪、傅里叶红外光谱仪、X射线荧光光谱仪、扫描电子显微镜等对分子筛进行表征,考察了杂原子对分子筛结构的影响,并以杂原子分子筛为丙烯助剂活性组分制备催化剂,对催化剂性能进行评价。结果表明:杂原子的引入以及离子交换不会影响分子筛晶相;杂原子分子筛中Fe^(3+)并未全部进入分子筛骨架中,一部分以四配位的形式进入分子筛骨架中,另一部分以六配位的形式存在于分子筛骨架之外;杂原子分子筛作为丙烯助剂活性组分时,所制备催化剂的原料油转化率和丙烯收率分别为80.21%,8.74%。A series of heteroatom zeolites with different Fe contents were prepared by in-situ synthesis,and characterized by X-ray diffractometer,fourier transform infrared spectrometer,X-ray fluorescence spectrometer,scanning electron microscope,etc.The effects of heteroatoms on the structure of the zeolites were investigated,and catalysts containing heteroatom zeolites as the active components of the propylene additives were prepared and evaluated for the performance of the catalysts.The results showed that the introduction of heteroatoms and ion exchange did not affect the crystalline phase of the zeolites;the Fe^(3+)of heteroatom zeolites did not enter into the zeolite′s framework completely,but part of those entered into the zeolite′s framework and formed the tetracoordinated structure,and the other part of those existed outside of the framework and formed the sexadentate structure.When heteroatom zeolites were used as active components of propylene additives,the feedstock oil conversion rate and propylene yield on the prepared catalysts were 80.21%and 8.74%,respectively.

关 键 词：ZSM-11分子筛 杂原子 丙烯助剂 丙烯收率 原位合成法 

分 类 号：TE624.95[石油与天然气工程—油气加工工程]