KINETICS OF ZEOLITE ZSM-5 CRYSTALLIZATION - TEMPLATE EFFECT OF PROPYL-SUBSTITUTED AMINES

被引：9

作者：

MINTOVA, S ^{[1
]}

VALTCHEV, V ^{[1
]}

VULCHEVA, E ^{[1
]}

VELEVA, S ^{[1
]}

机构：

[1] TECHNOL UNIV SOFIA,DEPT PHYS CHEM,BU-1756 SOFIA,BULGARIA

来源：

MATERIALS RESEARCH BULLETIN | 1992年 / 27卷 / 04期

关键词：

ZEOLITES; ORGANIC TEMPLATES;

D O I：

10.1016/0025-5408(92)90030-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zeolite ZSM-5 was synthesized from the initial gel: 33Na2O: 44R: Al2O3: 1000SiO2:4000H2O: 25H2SO4, were R is tetrapropylammonium bromide(TPA. Br), tripropylamine(Tp), dipropylamine(Dp) and propylamine(Pr). The nucleation and crystallization processes were subjected to a detailed kinetic analysis. Values of nucleation and crystallization energies as well as corresponding pre-exponential factors are calculated. Throughout the crystallization a kinetic compensation effect relationship is observed between the resulting kinetic characteristics for ZSM-5 with TPA, Tp, Dp and Pr. The effect of templates is estimated on the basis of the calculated kinetic parameters. The templates used are ordered for effectiveness as: TPA. Br >> Pr > Dp > Tp

引用

页码：515 / 522

页数：8

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