摘要:
This invention relates to the production of a cracking catalyst derived from hydrothermal treatment of an ammoniated silica-alumina gel, the alumina component of which is formulated from a mixture of anionic and cationic aluminum containing salts.
摘要:
A zeolite containing catalyst which is associated with finely dispersed metal is formed by decomposing a compound, whose anion contains a metal and a (CN) radical, which has been deposited on the host catalyst.
摘要:
An improvement in abrasion resistance is obtained in zeolite compositions containing alumina and clay in a matrix by employing comminuted zeolites.
摘要:
This invention relates to zeolites of the faujasite type generally referred to as X or Y zeolites which contain both aluminum and NH.sub.4 in exchange position and catalysts employing the same.The zeolite of our invention is derived from the sodium form of the zeolite by first exchanging the sodium form with an aluminum ion to replace a substantial portion of the sodium and further reducing the sodium content of the zeolite by exchange with an ammonium ion.
摘要:
Exchanged zeolite of the faujasite type is produced by exchanging the sodium zeolite at super atmospheric pressures at temperatures below about 500.degree. F. with salt solutions in ratios of cations in excess of an equivalent of the cation per equivalent of the sodium in the zeolite.
摘要:
This invention relates to a hydroprocessing catalyst particularly useful in hydrocracking comprising a low sodium faujasite zeolite produced by a high pressure exchange of Na cations with a solution of an ammonium salt as a substrate for incorporation of a hydrogenating metal compound.
摘要:
This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of clay and an alumina-silica component.
摘要:
This invention relates to the preparation of rare earth exchanged X type faujasite zeolites in which the Na content is reduced by exchange with rare earth cations to introduce in excess of about 0.9 equivalents of rare earth cations per gram atom of aluminum and catalysts employing the same.
摘要:
This invention relates to alpha (Si, Al)O.sub.4 crystalline complex, and to silica-alumina gel and crystalline alumino silicate host containing said alpha (Si, Al)O.sub.4 complex; both gels and crystalline alumina silicates containing a novel crystalline phase resulting from the hydrothermal treatment of the host (Si, Al)O.sub.4 complexes, both amorphous gel and crystalline alumino silicates, in the presence of rare earth cations.
摘要:
This invention relates to an improvement in the abrasion resistance of catalysts formulated from a mixture of an exchanged zeolite of the faujasite type, hydrated alumina and ammonium polysilicate or silica sol.