摘要:
Steam stable aluminosilicate zeolite catalysts are prepared by calcining said zeolites at an elevated temperature below about 1100.degree. F. in a closed system having a limited amount of oxygen wherein said zeolite contains organic cations and/or is in intimate contact with a charring agent thereby converting a portion of said organic cations or charring agent to a carbonaceous deposit within the pores of said zeolite in an amount from about 1.5-15 wt. % based on the total weight of the catalyst. Such catalysts are highly useful in the conversion of oxygenates, e.g., methanol to hydrocarbon products.
摘要:
Crystalline zeolite catalysts are stabilized against reducing and moisture containing atmospheres by providing and maintaining substantial metal cationic sites in the zeolite during use in chemical reactions encountering reducing and/or moisture rich atmospheres at high temperature.
摘要:
Monoalkyl benzene having a side chain of at least two carbon atoms is converted to dialkyl benzene having side chains of shorter length than the charge and containing a proportion of para dialkyl benzene in excess of the thermodynamic equilibrium value by reaction over a dual function catalyst comprising a noble metal from Group VIII of the Periodic Table and a crystalline aluminosilicate zeolite of high silica/alumina ratio above 12, a constraint index of 1 to 12, which aluminosilicate is in a state to restrict diffusion of ortho xylene.
摘要:
A catalytic process is provided for converting a feed containing a C.sub.1 -C.sub.4 monohydric alcohol by contact of said alcohol, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite having a crystal size of at least about 1 micron, a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12. The zeolite contains a Group 2B and a Group 8 metal or metal compound plus magnesium, either per se or in compound form.
摘要:
A catalytic process is provided for converting a feed containing a C.sub.1 -C.sub.4 monohydric alcohol by contact of said alcohol, under conversion conditions, with a catalyst comprising a crystalline aluminosilicate zeolite having a crystal size of at least about 1 micron, a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12. The zeolite contains a Group 2B and a Group 8 metal or metal compound plus magnesium, either per se or in compound form.
摘要:
A metallic reforming catalyst, consisting of platinum and iridium or platinum, iridium and copper on a porous carrier provides excellent conversion of naphtha to C.sub.5.sup.+ product. A method of incorporating the metals or metal compounds on the carrier and preparing the finished catalyst using dimethyl sulfoxide is a novel procedure and provides unexpected catalytic properties. Novel reforming operations using these catalysts under moderate or severe conditions do not drastically alter the product yield.
摘要:
A metallic reforming catalyst, preferably consisting of platinum and iridium or compounds thereof, with or without a third metal component of either Groups IB, IIB, IIIA, IVA, VB, VIB or VIIB on a porous carrier provides excellent conversion of naphtha to C.sub.5 .sup.+ product. A method of incorporating the metals or metal compounds on the carrier and preparing the finished catalyst using dimethyl sulfoxide is a novel procedure and provides unexpected catalytic properties. Novel reforming operations using these catalysts under moderate or severe conditions do not drastically alter the product yield.
摘要:
An FCC or fluidized catalytic cracking process and apparatus for converting heavy metals laden crudes is disclosed. The heavy feed, conventional catalyst and an additive or vanadium getter contact the feed in a riser reactor. The additive is segregated from conventional FCC catalyst upstream of the conventional FCC regenerator. An elutriating, upflow riser reactor may be used with a coarse, rapidly settling getter. A fine, slowly settling getter may be used, with getter segregation achieved by using an elutriating cyclone on the riser outlet, an elutriating catalyst stripper, a sieve, or the like. The spent getter may be used once through, regenerated in a separate getter regenerator, or used as a source of fuel. Alumina and sponge coke are preferred getters.
摘要:
A paraffin conversion process for hydroisomerizing a nitrogen and wax-containing hydrocarbon feedstock comprising contacting the feedstock with a catalyst including a ZSM-11 zeolite characterized by an alpha value from about 10 to 50, in combination with a Group VIII metal hydrogenation-dehydrogenation component of platinum or palladium at a temperature of about 400.degree. F. to about 850.degree. F. and at a pressure of from about 200 to about 2000 psig.