Mobil Oil Corporation

Roland Von Ballmoos

Eric G Derouane

Ernest W Valyocsik

Cynthia T-w Chu

Michael E Landis

Francis X Ryan

Ying-Yen P Tsao

John B Higgins

A process for converting feedstock comprising hydrocarbon compounds to product comprising hydrocarbon compounds of lower molecular weight than said feedstock hydrocarbon compounds which comprises contacting said feedstock at conditions for said conversion with catalyst comprising crystals having a framework topology after heating at 110.degree. C. or higher giving an X-ray diffraction pattern with interplanar d-spacings at 16.4.+-.0.2 Angstroms, 8.2.+-.0.1 Angstroms, 6.21.+-.0.05 Angstroms, 6.17.+-.0.05 Angstroms, 5.48.+-.0.05 Angstroms and 4.74.+-.0.05 Angstroms, and without a significant interplanar d-spacing at 13.6-13.3 Angstroms.

Crystalline composition

There is provided a process for redispersing agglomerated noble metals such as platinum over the surface of certain tetrahedral crystalline oxides containing oxides of aluminum and phosphorus. Examples of such crystalline oxides include aluminophosphate (i.e. AlPO.sub.4 s), silicoaluminophosphates (i.e. SAPOs), ELAPSOs, MeAPOs, FeAPOs, TiAPOs and FCAPOs. The agglomerated noble metals may be redispersed by containing the supported noble metal with a suitable treating agent such as a stream of gas comprising molecular chlorine.

Reactivating catalysts containing noble metals on molecular sieves

An improved method for synthesis of improved silicoaluminophosphate SAPO-37 is provided. The method comprises (1) preparing a two-phase reaction mixture containing particular components and comprising both a liquid organic phase and a liquid aqueous phase; (2) heating the reaction mixture at a rate of from 5.degree. C. to 200.degree. C. per hour to a temperature of from 80.degree. C. to 200.degree. C.; agitating the reaction mixture in a manner sufficient to intimately admix said liquid organic and aqueous phases with each other; (4) once nucleation of the silicoaluminophosphate occurs, heating the agitated reaction mixture at rate of from 5.degree. C. to 200.degree. C. per hour to a temperature of from 100.degree. C. to 300.degree. C.; (5) maintaining the agitated reaction mixture at a temperature of from 100.degree. C. to 300.degree. C. and a pH of from 2 to 9 until crystals of the desired silicoaluminophosphate are formed; and (6) recovering silicoaluminophosphate material from the reaction mixture.

Synthesis of crystalline SAPO-37

A method for synthesizing a crystalline silicophosphoaluminate is provided. The composition has ion-exchange properties and is readily convertible to catalytically active material. The synthesis method requires an organic phase, and an aqueous phase. The silicon, phosphorus and aluminum components of the silicophosphoaluminate may, optionally, be replaced with other elements in the plus 4, 5 and 3 valence states, respectively.

Silicophosphoaluminates and related crystalline oxides

This invention relates to a novel synthetic crystalline molecular sieve composition which may contain framework +3 valence element, e.g. aluminum, +4 valence element, e.g. silicon, and +5 valence element, e.g. phosphorous, and to use thereof in catalytic conversion of organic compounds. The crystalline composition of this invention exhibits ion-exchange properties and can easily be converted to catalytically active material.

A method is disclosed which provides improved control over the noble-metal exchange of zeolite catalyst by using bulky organic bases to control pH during the metal loading step.

pH control by bulky organic bases during noble-metal exchange of zeolite

There is provided a process for using poly-nuclear oxometalates in the synthesis of crystalline oxide materials. In addition to a poly-nuclear oxometalate, the reaction mixture includes an additional source of an oxide and two distinct liquid phases, one phase being an aqueous phase and the other phase being an organic phase including a water immiscible organic solvent for either the poly-nuclear oxometalate or the additional oxide source.

Use of poly-nuclear oxo-metalates in synthesis of crystalline oxides

Ph control by bulky organic bases during noble-metal exchange of zeolite

This invention relates to a new form of crystalline silicoaluminophosphate identified as SAPO-17, to a new and useful improvement in synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.

Synthesis of crystalline SAPO-17

Silicophosphoaluminates are crystallized from a two-phase reaction mixture comprising sources of silicon oxide, aluminum oxide and phosphorus oxide and a suitable directing agent. The silicophosphoaluminates produced have ion exchange properties and are readily convertible to catalytically active material.

Silicoaluminophosphate crystallization using hydrolysis

A new crystalline silicophosphoaluminate designated MCM-4 and having a particular crystal strcuture is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.

Crystalline silicophosphoaluminate MCM-4

The crystalline silicophosphoaluminate designated MCM-10 catalyzes various processes for modifying organic compounds, particularly the cracking of hydrocarbons and the conversion of alcohols and ethers to olefins.

Catalytic process for modifying organic compounds

An improved method of synthesis for a composition comprising crystalline silicophosphoaluminate (MCM-2) is provided. The composition has ion-exchange properties and is readily convertible to catalytically active material. The synthesis method requires two liquid phases comprising a suitable organic or inorganic directing agent and specific reactants, including a specific aluminum phosphate of the ALPO-5 structure.

Crystalline silicophosphoaluminate from a two phase medium

A new crystalline silicophosphoaluminate designated MCM-1 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.

Crystalline silicophosphoaluminate MCM-1

A new crystalline silicophosphoaluminate designated MCM-5 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.

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Hopewell, NJ, United States of America

Roland Von Ballmoos