Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-09T06:53:37.928Z Has data issue: false hasContentIssue false

Clay Minerals as Catalysts

Introduction

Published online by Cambridge University Press:  14 March 2018

Get access

Extract

The industrial uses of clay minerals as catalysts date from the early 'thirties. The application of catalysis to the thermal cracking of oil started in about 1931; pre-heated oil was passed downwards through fixed beds of granular catalyst, often attapulgite, under pressure (80 lb. per sq. in.) and at about 900°F., as in the Houdry and Hydroforming systems. The catalyst had to be periodically burned off to regenerate it, and was reintroduced at the top of the reaction column. An improvement on this static process came when the granulated catalyst was kept moving counter current to the pre-heated oil. This led about 1939 to the fluid-flow method of catalysis in which powdered catalysts are used in a fluid, free-flowing condition, circulated by the air-rift method well-known in the movement of liquids.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1948

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)