Compositions – X-ray or neutron shield
Patent
1974-12-16
1977-03-29
Shine, W. J.
Compositions
X-ray or neutron shield
252467, 252472, 208216, 208217, B01J 2384, B01J 2388
Patent
active
040148211
ABSTRACT:
This invention relates to novel catalysts, of two distinct types, useful for the catalytic hydroconversion of the 1050.degree. F.+ hydrocarbon materials contained in heavy crudes and residua such that the resulting product will be suitable for further processing in conventional refinery operations allowing maximization of clean liquid products. Catalysts, which include Group VIB and Group VIII metals, preferably in admixture, and preferably including a Group IVA metal, notably germanium, having certain critical ranges of physical characteristics inclusive of large uniform pore sizes, are used for the conversion, these having been shown to possess improved catalytic activity and selectively for the hydroconversion of the 1050.degree. F.+ materials of the heavy feeds and residua. Novel methods are described for the preparation of such catalysts, as well as for the use of such catalysts. One of the catalysts, i.e., one having properties inclusive of a large number of pores in the 100-275A pore size diameter range, is particularly suitable as a first stage catalyst and the other, which has properties inclusive of a large number of pores in the 100-200A pore size diameter, is especially suitable as a second stage catalyst for use in processing the effluent of said first stage.
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patent: 3661805 (1972-05-01), Horvath
patent: 3746660 (1973-07-01), O'Hara
patent: 3746661 (1973-07-01), O'Hara
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patent: 3867281 (1975-02-01), Morgan et al.
patent: 3873470 (1975-03-01), Conway et al.
Exxon Research and Engineering Company
Proctor L. A.
Shine W. J.
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