摘要 |
PCT No. PCT/EP93/01404 Sec. 371 Date May 15, 1995 Sec. 102(e) Date May 15, 1995 PCT Filed Jun. 4, 1994 PCT Pub. No. WO93/25476 PCT Pub. Date Dec. 23, 1993Crystalline tectosilicate ZSM-5 zeolite may be prepared which comprise substantially needle-shaped agglomerates. Tectosilicate ZSM-5 zeolite having a 29Si NMR spectrum having at least three peaks indicates the presence of Si atoms in the structure having 0, 1 or 2 T-atoms as nearest neighbors. |
申请人 |
EXXON CHEMICAL PATENTS INC., LINDEN, N.J., US |
发明人 |
VERDUIJN, JOHANNES, PETRUS, NL-3202 XL SPIJKENISSE, NL;MARTENS, LUC, ROGER, MARC, B-1860 MEISE, BE;MARTENS, JOHAN, ADRIAAN, B-3040 HULDENBERG, BE |