Powder technology in the pharmaceutical industry: the need to catch up fast

Characterizing continuous powder mixing using residence time distribution

A review of the Residence Time Distribution (RTD) applications in solid unit operations

Effect of operating conditions and design parameters in a continuous powder mixer

Modeling of heat transfer in granular flow in rotating vessels

Quantitative characterization of mixing processes in rotary calciners

A catalyst composition is provided which comprises a large-pore molecular sieve component and an additive catalyst component, said additive catalyst component having been formulated in a special way to provide an improved catalyst and conversion process. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, and increased lower olefins, especially propylene and butylene.

Catalyst and catalytic conversion therewith

A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises a large-pore molecular sieve material and an additive catalyst composition comprising crystalline material having the structure of ZSM-5 and a silica/alumina mole ratio of less than about 30. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, increased alkylate and potential alkylate, and increased lower olefins, especially propylene.

Catalytic conversion with improved catalyst catalytic cracking with a catalyst comprising a large-pore molecular sieve component and a ZSM-5 component

Mixing dynamics in catalyst impregnation in double-cone blenders

A catalytic cracking process for converting a hydrocarbon fraction, preferably boiling in the range of a heavy gas oil, is disclosed in which the cracking catalyst is a large crystal fully crystalline zeolite Beta having a broad range of silica-to-alumina mole ratios, i.e. 20->1000. The zeolite Beta catalyst is synthesized with a nitrogenous organic chelating agent, such as a tertiary alkanolamine, preferably triethanolamine, in the synthesis mixture along with at least one source of organic directing agent such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The zeolite Beta can be used as a stand alone catalyst or an additive catalyst for hydrocarbon cracking reactions along with another molecular seive type catalyst such as a faujasite catalyst or ZSM-5. The large crystal zeolite Beta can also be treated with a source of phosphorus to enhance the properties of the zeolite.

Jocelyn Anne Kowalski

Papers

Quantitative characterization of mixing processes in rotary calciners

Catalyst and catalytic conversion therewith

Catalytic conversion with improved catalyst catalytic cracking with a catalyst comprising a large-pore molecular sieve component and a ZSM-5 component

Mixing dynamics in catalyst impregnation in double-cone blenders

Catalytic cracking process utilizing a zeolite beta catalyst synthesized with a chelating agent