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:
Jul. 17, 2001
Filed:
Mar. 18, 1999
Frederick Ernest Hancock, Stockton, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
Shaped units suitable for use as a catalyst, e.g. for the decomposition of hypochlorite, comprise a compacted particulate mixture of at least one oxide of a Group VIII metal M selected from nickel and cobalt, a calcium aluminate cement, and alumina and/or magnesia, the shaped units having (after ignition in air at 900° C.) a content of a Group VIII metal oxide of 10 to 50% by weight (expressed as the divalent oxide, MO), a calcium oxide content of 1 to 10% by weight, an alumina content by weight that is at least four times the weight of calcium oxide, a total content of alumina plus magnesia of at least 40% by weight, a silica content of less than 1% by weight, and the shaped units having a pore volume in the range 0.2 to 0.5 ml/g and having a pore size distribution such that from 5 to 25% of the total pore volume is in the form of pores of diameter in the range 15 to 35 nm, at least 30% of the total pore volume is in the form of pores of diameter greater than 35 nm, and 10 to 20% of the total pore volume is in the form of pores of diameter greater than 1500 nm.