制备方法对锆硅分子筛的催化性能影响  

Effect of preparation method on catalytic performance of Zr-Si molecular sieve

作　　者：彭瀚 李凝 吴剑[2] 练彩霞 蒋武 马浩 Peng Han;Li Ning;Wu Jian;Lian Caixia;Jiang Wu;Ma Hao(Chemical Engineering Collage,Guangdong University of Petrochemical Technology,Maoming 525000,Guangdong,China;Chemical Engineering Collage,Xiangtan Univerity,Xiangtan 411105,Hunan,China)

机构地区：[1]广东石油化工学院化学工程学院,广东茂名525000 [2]湘潭大学化学工程学院,湖南湘潭411105

出　　处：《工业催化》2020年第3期37-42,共6页Industrial Catalysis

基　　金：广东省创强重大项目(2017KZDXM057);广东省特色创新项目(2016KTSCX091)。

摘　　要：分别以水热法(DHT)、干胶法(DGC)和溶胶-凝胶法(Sol-Gel)合成了锆硅杂原子分子筛,采用XRD、TPD、SEM、TEM、FT-IR、N 2吸附-脱附等对分子筛样品的晶相结构、表面形貌、比表面积、孔径分布以及表面酸性进行表征。结果表明,水热法制备的锆硅杂原子分子筛特征峰明显,具有较高的结晶度,分子筛以微孔为主,并具有较多的酸中心和较大的比表面积,在α-蒎烯异构化反应中表现出较好活性和较高的柠檬烯选择性。Hetero-atomic Zr-Si molecular sieves were synthesized by hydrothermal treatment(DHT),dry gel conversion(DGC)and sol-gel method,respectively.The crystal phase,surface appearance,specific surface area,pore-size distribution and acid properties of the molecular sieve samples have been characterized by XRD,TPD,SEM,TEM,FT-IR,N 2 adsorption-desorption.The results show that the sample prepared by hydrothermal treatment has obvious characteristic peak of molecular sieve and higher crystallinity.The molecular sieve mainly consists of microporous,and it has more acid centers and larger surface area.It shows good activity and high selectivity of limonene in the isomerization reaction ofα-pinene.

关 键 词：催化剂工程 制备方法 Zr-Si分子筛 α-蒎烯异构化 

分 类 号：TQ426.6[化学工程] TQ424.25