Basic catalyst based on titanates, zirconates and hafnates

US6262325A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Narbeshuber · Ludwigshafen, DE
• Ulrich Steinbrenner · Kohlhof, DE

Key dates

• Filing date: Oct 6, 1999
• Grant date: Jul 17, 2001
• Expiry date: Oct 6, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S502/525
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The catalyst comprises at least one alkali metal on a support which has the general formula (I) EQU A.sub.n' Ti.sub.m' Zr.sub.p' Hf.sub.q' O.sub.n'+2(m'+p'+q') (I) where PA1 A is a divalent metal, PA1 20.multidot.(m'+p'+q')>n'>0.05.multidot.(m'+p'+q'), and which may be doped with at least one compound of an alkali metal and/or alkaline earth metal, where the alkali metal/support ratio by weight is 0.01-5:1 and, when a dopant is present, the dopant/support ratio by weight is 0.01-5:1, and where the proportion of support phase corresponding to the ZrO.sub.2 structure or an alkaline earth metal oxide structure or consisting of ZrO.sub.2 or alkaline earth metal oxide is less than 10% by weight. The catalyst is used for the side-chain alkylation or alkenylation of alkylaromatic compounds with olefins or diolefins, for the double-bond isomerization of olefins, for the dimerization of olefins, for the coupling of aromatic nuclei and for the amination of olefins and conjugated diolefins.