STRUCTURALLY MODIFIED ALUMINA SUPPORTS, AND HEAT TRANSFER SOLIDS FOR HIGH TEMPERATURE FLUIDIZED BED REACTIONS

摘要

A structurally modified alumina useful as a catalyst support,or heat transfer solid for fluidized bed synthesis gas processing. AGroup IIA metal, or metals, particularly magnesium and barium, iscomposited with a particulate alumina to provide a catalyst support,or alumina heat transfer solid, having increased resistance to sinteringand agglomeration; properties which promote defluidization of thebed in conducting fluidized bed reactions at high temperatures. Theparticles of preference are represented by formulas (1) and (2), acomposite particle being represented by formula (1), as follows:(1) M x Al2O3+xwith the core of the particle being represented by formula (2), asfollows:(2) M y Al2O3+ywhere in formulas (1) and (2) M is a Group IIA metal, x is a numberranging from about 0.01 to about 0.4 and is representative of thenumber of moles of the metal M per mole of Al2O3, y is a number equalto or greater than zero, and x is greater than y.