THE EFFECTS OF ALKALI-METAL HYDROXIDE PRETREATMENT ON THE HYDROGENATION ACTIVITY OF NICKEL-LOADED Y-ZEOLITES

被引：9

作者：

COUGHLAN, B

KEANE, MA

机构：

[1] UNIV GLASGOW,DEPT CHEM,GLASGOW G12 8QQ,SCOTLAND

[2] NATL UNIV IRELAND UNIV COLL GALWAY,PHYS CHEM LABS,GALWAY,IRELAND

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1990年 / 63卷 / 02期

关键词：

D O I：

10.1016/0304-5102(90)85143-6

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：

A range of NiKY and NiNaY zeolites prepared by ion exchange were treated with NaOH and KOH solutions of varying pH at room temperature and reduced in a hydrogen atmosphere at 723 K. By a combination of iodometric titrations and X-ray line broadening it is shown that reduction of the hydroxide treated samples generates a greater mass of nickel metal, which is in the form of smaller crystallites compared with the untreated zeolites. The pretreated samples exhibit a uniquely high steady state catalytic activity in the hydrogenation of benzene to cyclohexane.

引用

页码：193 / 199

页数：7

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