SYNTHESIS AND CATALYTIC PROPERTIES OF ZEOLITE ZSM-23

被引:36
作者
Ernst, S. [1 ]
Kumarrly, R. [1 ]
Weitkamp, J. [1 ]
机构
[1] Univ Oldenburg, Dept Chem Chem Technol, D-2900 Oldenburg, Germany
关键词
D O I
10.1016/0920-5861(88)80013-0
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Zeolite ZSM-23 was synthesized in the presence of pyrrolidine. An increase of the synthesis time and the crystallite size with decreasing alkalinity (NaOH content) suggests that not only hydroxyl ions but also sodium ions play an important role in the nucleation of ZSM-23. One of the synthesized samples was characterized by means of selected catalytic test reactions, viz. hydrocracking of butylcyclohexane (determination of the Spaciousness Index, SI) and the isomerization and hydrocracking of n-decane. The observed selectivities suggest that the effective pore width of ZSM-23 is slightly smaller than that of ZSM-5.
引用
收藏
页码:1 / 10
页数:10
相关论文
共 24 条
[1]  
Barrer R.M., 1982, HYDROTHERMAL CHEM ZE, P154
[2]  
Bendoraitis J. G., 1986, PORE SIZE SHAPE EFFE, P669
[3]   ZSM-39 - ITS PREPARATION AND SOME PROPERTIES [J].
BIBBY, DM ;
PARKER, LM .
ZEOLITES, 1983, 3 (01) :11-12
[4]  
Casci J. L., 1986, P 7 INT C ZEOL, P215
[5]  
Casci J.L., 1985, US Patent, Patent No. [4 528 171, 4528171]
[6]  
Dessau R.M., 1983, US Patent, Patent No. [4 423 280, 4423280]
[7]  
Ernst S., APPL CATAL UNPUB
[8]  
Haag W.O., 1984, P 8 INT C CAT, V2, P305
[9]  
Jacobs P.A., 1986, P 7 INT ZEOL C, P23
[10]   ESTIMATION OF THE VOID STRUCTURE AND PORE DIMENSIONS OF MOLECULAR-SIEVE ZEOLITES USING THE HYDROCONVERSION OF NORMAL-DECANE [J].
MARTENS, JA ;
TIELEN, M ;
JACOBS, PA ;
WEITKAMP, J .
ZEOLITES, 1984, 4 (02) :98-107