1
Brent M Lok, Celeste A Messina, Robert L Patton, Richard T Gajek, Thomas R Cannan, Edith M Flanigen: Crystalline silicoaluminophosphates. Union Carbide Corporation, Richard G Miller, April 3, 1984: US04440871 (777 worldwide citation)

A novel class of crystalline microporous silicoaluminophosphates is synthesized by hydrothermal crystallization of silicoaluminophosphate gels containing a molecular structure-forming templating agent. The class comprises a number of distinct species, each with a unique crystal structure. The compos ...


2
Gregory J Gajda, Richard T Gajek: Zeolite beta and its use in aromatic alkylation. UOP, Thomas K McBride, Eugene I Snyder, March 3, 1998: US05723710 (53 worldwide citation)

There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding energies as mea ...


3
Regis J Pellet, Peter K Coughlin, Albert R Springer, Richard T Gajek: Microporous crystalline composite compositions. UOP, Thomas K McBride, August 29, 1989: US04861739 (25 worldwide citation)

The invention involves composite structures of multiple phases, at least two of which are inorganic crystalline compositions that are contiguous and have a common crystal framework and structure, and at least one of them contains phosphorus and aluminum atoms as part of its crystalline framework str ...


4

5
Gregory J Gajda, Richard T Gajek: Modified zeolite beta, processes for preparation and use thereof. UOP, Thomas K McBride, Eugene I Snyder, Frank S Molinaro, June 4, 1996: US05522984 (22 worldwide citation)

This invention relates to a novel zeolite which has the crystal structure of zeolite beta. The novel zeolite SN-beta has a unique infrared absorbance spectrum, shows enhanced activity for transalkylation of di-isopropyl-benzene and shows less deactivation for cumene synthesis. The zeolite beta is pr ...


6
Gregory J Gajda, Richard T Gajek: Zeolite beta and its use in aromatic alkylation. UOP, John G Tolomei, Frank S Molinaro, August 27, 2002: US06440886 (19 worldwide citation)

There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding energies, as me ...


7
Brent M Lok, Celeste A Messina, Robert L Patton, Richard T Gajek, Thomas R Cannan, Edith M Flanigen: Hydrocarbon conversions using catalysts silicoaluminophosphates. UOP, Thomas K McBride, Richard G Miller, May 19, 1992: US05114563 (14 worldwide citation)

The catalytic conversion of hydrocarbon feedstocks is affected under effective conversion process conditions in the presence of silicoaluminophosphate-based catalyst compositions.


8
Gregory J Gajda, Richard T Gajek: Modified zeolite beta processes for preparation. UOP, Thomas K McBride, Frank S Molinaro, November 9, 1999: US05980859 (9 worldwide citation)

This invention relates to a novel zeolite which has the crystal structure of zeolite beta. The novel zeolite SN-beta has a unique infrared absorbance spectrum, shows enhanced activity for transalkylation of di-isopropyl-benzene and shows less deactivation for cumene synthesis. The zeolite beta is pr ...


9
Gregory J Gajda, Richard T Gajek: Zeolite beta and its use in aromatic alkylation. UOP, John G Tolomei, Frank S Molinaro, December 19, 2000: US06162416 (8 worldwide citation)

There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding energies, as me ...


10
Edith M Flanigen, Richard T Gajek, Brent M T Lok, Robert L Patton, Stephen T Wilson: Boron-aluminum-phosphorus-silicon-oxide molecular sieve compositions. UOP, Thomas K McBride, Eugene I Snyder, Frank S Molinaro, October 15, 1991: US05057295 (2 worldwide citation)

Molecular sieve compositions having three-dimensional microporous framework structures of BO.sub.2, AlO.sub.2, PO.sub.2 and SiO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula: