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| Number | Title | Issue Date |
| 4490569 | Process for converting propane to aromatics over zinc-gallium zeolite The elution of zinc from zinc-impregnated zeolite catalysts is minimized by incorporating gallium into the catalyst composition. Optionally, palladium may also be included in the composition. The catalyst composition is used to effect the conversion of pr... | 12/25/1984 |
| 4487843 | Catalytic activity of aluminosilicate zeolites The present invention relates to a method of improving catalytic activity of a zeolite by first steam treating the zeolite and then loading the zeolite so treated with a Group IIIb metal, especially gallium. It has been found that steam treatment prior to... | 12/11/1984 |
| 4452907 | Process for the production of crystalline aluminosilicates and their use as catalysts and catalyst supports Crystalline aluminosilicates having a silica to alumina molar ratio greater than 12 are produced by mixing a source of silica, a source of alumina, a source of alkali metal, water and a source of ammonium ions, e.g. ammonia or an ammonium salt, in the abs... | 06/05/1984 |
| 4452908 | Process for the production of catalysts based on crystalline aluminosilicates A process for the production of a catalyst based on a crystalline aluminosilicate having a silica to alumina molar ratio greater than 12:1 which is obtained by mixing a source of silica, a source of alumina, a source of alkali metal, water and a source of... | 06/05/1984 |
| 4451686 | Dehydrogenation process Catalytic dehydrogenation of alkyl- or dialkyl- aromatic hydrocarbons such as ethylbenzene or ethyltoluene to vinyl aromatic hydrocarbons is achieved by passing the aromatic hydrocarbons on a crystalline silica which has been calcined under an inert atmos... | 05/29/1984 |
| 4427786 | Activation of high silica zeolites A method for enhancing the activity of high silica zeolite, i.e. a zeolite having a silica-to-alumina ratio greater than 100, which has been synthesized from a reaction mixture containing bulky ions is disclosed which involves compositing the zeolite with... | 01/24/1984 |
| 4420467 | Zeolite Nu-5 A synthetic zeolite material, designated zeolite Nu-5, having a molar composition expressed by the formula; 0.5 to 1.5 R2 O: Y2 O3 : at least 10 XO2 : 0 to 2000 H2 O wherein R is a monovalent cation o... | 12/13/1983 |
| 4392989 | Zinc-gallium zeolite The elution of zinc from zinc-impregnated zeolite catalysts is minimized by incorporating gallium into the catalyst composition. Optionally, palladium may also be included in the composition. The catalyst composition is used to effect the conversion of pr... | 07/12/1983 |
| 4392003 | Isobutene by dehydroisomerization of normal butane This invention relates to a method of dehydroisomerizing n-butane by contacting at elevated temperatures a feedstock containing n-butanes with a catalyst composition containing a gallium compound on a support. The process affords a valuable method of prod... | 07/05/1983 |
| 4377504 | Cracking catalyst improvement with gallium compounds Gallium compounds are usefully employed to modify hydrocarbon cracking catalysts.... | 03/22/1983 |
| 4366135 | Method for preparing zeolites Preparation of zeolites having the formula: [wherein y ranges from 20 to 90, z ranges from 2 to 12, M is at least one cation and n is the valence of M], comprising the admixing of diethyl-piperidinium hydroxide, or a salt thereof, with H2 O and with... | 12/28/1982 |
| 4350835 | Process for converting ethane to aromatics over gallium-activated zeolite A catalytic process is provided for converting gaseous feedstocks containing ethane to liquid aromatics by contacting said gaseous feeds in the absence of added air or oxygen, under conversion conditions, with a crystalline zeolite catalyst having incorpo... | 09/21/1982 |
| 4346021 | Method for producing aluminosilicates, their use as catalysts and supports and method for producing catalysts therefrom Crystalline aluminosilicates having a high (greater than 10:1) silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as that of ZSM-5 zeolite are prepared by mixing a source of silica, a source of alumina, a source of alkal... | 08/24/1982 |
| 4331774 | Process for the preparation of hydrocarbons A process is disclosed for the preparation of aromatic hydrocarbon mixtures from a feed mixture of carbon monoxide and hydrogen by contacting said feed at elevated temperature and pressure with a mixture of two catalysts; one capable of converting said fe... | 05/25/1982 |
| 4325808 | Hydrocarbon conversion catalyst system and method A hydrocarbon conversion catalyst system comprising a mixture of a first catalyst containing a noble metal component deposed on a refractory inorganic oxide and a second catalyst containing a non-noble metal component deposed on a support containing a ref... | 04/20/1982 |
| 4304686 | Method of preparing improved catalysts This invention relates to an improved method of preparing a zeolite composition in which some or all of the cations have been exchanged for gallium ions. The zeolite has a high silica to alumina ratio and is prepared by crystallization from an aqueous sol... | 12/08/1981 |
| 4208305 | Crystalline silicates and process of preparation Novel crystalline silicates which in dehydrated form having the composition in terms of moles of the oxides: (1.0&#b1;0.3) (R)2/n O. [a Fe2 O3. b Al2 O3. c Ga2 O3. y(dSiO2.... | 06/17/1980 |
| 4175057 | Zeolite composition This case relates to a process for producing aromatics by contacting a C3 -C8 hydrocarbon with a gallium catalyst supported on an aluminosilicate in which the ratio of silica to alumina is between 20:1 and 70:1.... | 11/20/1979 |
| 4136060 | Catalyst and hydrocarbon conversion process Disclosed is a catalyst essentially free of platinum, comprising from about 0.1 to about 2 weight percent rhenium and about 0.1 to about 2 weight percent gallium supported on a solid inorganic refractory oxide. A hydrocarbon conversion process, such as ca... | 01/23/1979 |
| 4083807 | Method for preparing crystalline aluminosilicate cracking catalysts An improved catalytic cracking catalyst is obtained by a method which comprises incorporating into a crystalline aluminosilicate catalyst by ion exchange a substantial concentration of a metal selected from the group consisting of antimony, bismuth and ma... | 04/11/1978 |
| 4075126 | Catalyst for alkylating aromatic hydrocarbons Alkylatable aromatic hydrocarbons are alkylated with olefins and alkylhalides under anhydrous alkylating conditions in the presence of a metallic cation exchanged trioctahedral 2:1 layer-lattice smectite-type catalyst in which the metallic cation has a Pa... | 02/21/1978 |
| 3979331 | Catalyst for alkylating aromatic hydrocarbons Alkylatable aromatic hydrocarbons are alkylated with olefins and alkylhalides under anhydrous alkylating conditions in the presence of certain metallic cation exchanged synthetic hectorite-type catalysts in which the metallic cation has a Pauling electron... | 09/07/1976 |
| 3976744 | Laminar heavy metal aluminosilicates Laminar 2 : 1 layer-lattice aluminosilicate minerals containing intra-lattice multivalent ions such as nickel, copper, cobalt and others. The minerals are particularly useful in catalytic operations. Procedures for preparing the inventive minerals are giv... | 08/24/1976 |
| 3970544 | Hydrocarbon conversion with ZSM-12 The specification discloses conversion of hydrocarbons using, as catalyst, a crystalline zeolite designated ZSM-12. The zeolite has the following composition: where M is at least one cation and n is the valence thereof, W is aluminum or gallium, Y is sili... | 07/20/1976 |
| 3965043 | Catalyst for alkylating aromatic hydrocarbons therefor Alkylatable aromatic hydrocarbons are alkylated with olefins and alkylhalides under anhydrous alkylating conditions in the presence of a metallic cation exchanged trioctahedral 2:1 layer-lattice smectite-type catalyst in which the metallic cation has a Pa... | 06/22/1976 |
