✦ LIBER ✦

Silica-supported small crystals of ZSM-5 zeolite

✍ Scribed by M.V. Landau; N. Zaharur; M. Herskowitz

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 1011 KB
Volume: 115
Category: Article
ISSN: 0926-860X
DOI: 10.1016/0926-860x(94)80374-9

No coin nor oath required. For personal study only.

✦ Synopsis

The small crystals of the ZSMJ zeolite were synthesized and stabilized inside pores of granulated silica gel support. The pores were filled with aqueous NaOH-Na,Al@-TF'ABr. During zeolite synthesis the reactants reacted with the silica on the pores wall to form small crystals. 37 wt.-% of ZSM-5 crystals were produced. 'IEM measurements showed large crystals, 3-5 pm in diameter, on the outer surface of silica grains; medium crystals, OS-2 km, inside the macropores and small crystals, 0.02-0.035 pm, inside the mesopores. The catalytic activity of the supported zeolite H-ZSM-5/SiOz measured by cracking of isobutane at 410-550°C was 2.2-7.8 times higher than for standard zeolite H-ZSM-5 with the same SiOJA1203 ratio and sodium content depending on the testing temperature.

📜 SIMILAR VOLUMES

Small crystal ZSM-5

✍ D.J. Klocke 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 101 KB

Synthetic ZSM-5 zeolite crystals and the

Synthetic ZSM-5 zeolite crystals and their manufacture

📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 136 KB

Growth of ZSM-5 crystals within hollow β

Growth of ZSM-5 crystals within hollow β-zeolite

✍ Qing Hu Zeng; Xiang Bai; Jia Jun Zheng; Jia Qi Chen; Rui Feng Li 📂 Article 📅 2011 🏛 Chinese Electronic Periodical Services 🌐 English ⚖ 269 KB

ZSM-5 zeolites having uniformly large cr

ZSM-5 zeolites having uniformly large crystals

✍ J.P. McWilliams; C.T. Sigal 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 89 KB

As in previous issues, a selection of the more interesting patents which have been published recently is given below under the headings: synthesis, catalysis, separation processes, detergents, and miscellaneous applications.

Hydrothermal synthesis and characterizat

Hydrothermal synthesis and characterization of ZSM-39 zeolite crystals in silica gel

✍ Dr. M. S. Joshi; K. Mohan Prabhu 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 215 KB 👁 1 views

ZSM-5 acid zeolite supported metallocene

ZSM-5 acid zeolite supported metallocene catalysts for ethylene polymerization

✍ Maria de Fátima V. Marques; Simone C. Moreira 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 497 KB

Zeolite H-ZSM-5 was used as support for the impregnation of Cp 2 ZrCl 2 catalyst in the synthesis of polyethylene. The catalyst preparation conditions were varied and the statistic program was employed with the purpose of evaluating the best catalyst preparation method. In order to utilize zeolite