The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1984
Filed:
Nov. 03, 1982
Alfred J Bird, Hounslow, GB;
Frank King, Reading, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
A three dimensional interstitial catalyst support and a catalyst system comprising the support for use in (especially pressure-sensitive) surface reactions involving disturbed fluid flow, especially trickle feed three phase reactions such as the hydrogenation of crotonaldehydes or butyraldehyde. The support comprises a three dimensional self-supporting form-stable interstitial structure composed of five or more superimposed intermeshing layers of knitted cloth and the volume of the interstices in the structure is from 60 to 98 (preferably at least 85) % of the volume of the structure. The combination of the use of intermeshing knitted wire, form-stability and an open structure allows disturbances comprising components of motion transverse to the general flow of the fluid through the support to be imparted by the catalyst system with less risk of blockages, flooding or damage by attrition and hence less need to increase pressure during a reaction which is undesirable in pressure sensitive reactions. Also a method for making the structures by rolling up knitted wire cloth, compressing it to the pre-determined volume and annealing.