DISILANE-MODIFIED MORDENITE ZEOLITES

被引:13
作者
YAN, YG [1 ]
VANSANT, EF [1 ]
机构
[1] UNIV INSTELLING ANTWERP,DEPT CHEM,INORGAN CHEM LAB,B-2610 WILRIJK,BELGIUM
关键词
D O I
10.1021/j100369a066
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effective pore size of H-mordenite zeolite can be decreased by implantation of disilyl compounds. Chemisorption of disilane at high temperature results in denser packing of the implanted entities on the external surface. This in turn enhances the pore narrowing effect. After hydrolysis-dehydration, the external surface of the disilanated zeolite can be reactivated by partial rehydration; thus a successive modification of the zeolite surface is possible. A narrowing of the pore size occurs without altering the internal pore structure or the active sites of these modified zeolites. The inert nature of the dehydrated disilanated zeolites eliminates the nonselective catalysis imposed by the active external surface of H-mordenites. This results in the formation of an efficient gas separator and a highly shape selective catalyst. © 1990 American Chemical Society.
引用
收藏
页码:2582 / 2586
页数:5
相关论文
共 27 条
[1]   ZEOLITES TREATED WITH SILICON TETRACHLORIDE VAPOR .2. SORPTION STUDIES [J].
ANDERSON, MW ;
KLINOWSKI, J .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1986, 82 :3569-3586
[2]  
Barrer R. M., 1971, ADV CHEM SER, V102, P1
[3]   SORPTION BEHAVIOR OF SILANATED H-MORDENITE [J].
BARRER, RM ;
VANSANT, EF ;
PEETERS, G .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1978, 74 :1871-1878
[4]  
BARRER RM, 1979, J CHEM SOC F1, V76, P180
[5]  
Beyer H. K., 1984, STUD SURF SCI CATAL, V18, P133
[6]   ALUMINUM SITING IN MORDENITE AND DEALUMINATION MECHANISM [J].
BODART, P ;
NAGY, JB ;
DEBRAS, G ;
GABELICA, Z ;
JACOBS, PA .
JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (21) :5183-5190
[7]   ISOMORPHOUS SUBSTITUTION IN ZEOLITE FRAMEWORKS .1. ACIDITY OF SURFACE HYDROXYLS IN [B]-ZSM-5, [FE]-ZSM-5, [GA]-ZSM-5, AND [AL]-ZSM-5 [J].
CHU, CTW ;
CHANG, CD .
JOURNAL OF PHYSICAL CHEMISTRY, 1985, 89 (09) :1569-1571
[8]  
COUDURIER G, 1986, MTH P INT C ZEOL JPN, P643
[9]  
DEHULSTERS P, 1989, STUD SURF SCI CATAL, V49, P271
[10]   IR-SPECTROSCOPIC STUDIES OF MOLECULAR-SIEVE H-MORDENITE .2. ALTERNATE EFFECT WITH H2O AND NH3 AND COMPARISON WITH ZEOLITH FAUJASITE AND CLINOPTILOLITE [J].
KARGE, HG .
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-FRANKFURT, 1975, 95 (4-6) :241-254