摘要:
A series of crystalline alumino-silicate zeolites identified as UZM-12 have been synthesized. These UZM-12 compositions have the ERI topology, a Si/Al>5.5 and can be prepared as nanocrystallites having an average particle size of about 15 to about 50 nanometers and a spheroidal morphology. The UZM-12 composition can be treated to remove at least a fraction of the framework aluminum atoms thereby providing zeolites with a Si/Al>5.75 and identified as UZM-12HS. Both the UZM-12 and UZM-12HS can catalyze various hydrocarbon conversion processes.
摘要:
A family of crystalline aluminosilicate zeolites designated UZM-5HS and derived from UZM-5 have been synthesized. The aluminum content of the UZM-5HS is lower than that of the starting UZM-5 thus changing its ion exchange capacity and acidity. These UZM-5HS are represented by the empirical formula: M1an+Al(1−x)ExSiy′Oz″ and are prepared by treatments such as acid extraction and AFS treatments.
摘要:
A method for preparing a family of zeolites, examples of which have been designated UZM-5, UZM-5P and UZM-6, and are represented by the empirical formula Mmn+Cgh+Rrp+Al(1-x)ExSiyOz The method includes forming a Charge Density Mismatch (CDM) reaction mixture comprising reactive sources of Al, Si, optionally a framework element, E, and at least one organic nitrogen containing cation template, C, in the hydroxide form. After the CDM mixture is mixed while aging, an organic cation crystallization template, R, and at least one alkali metal or alkaline earth metal, M, is added. The combined final reaction mixture is reacted with mixing to produce the zeolite, which may be used in various hydrocarbon conversion processes.
摘要:
A process for alkylating aromatic compounds using a family of zeolites, examples of which have been designated UZM-5, UZM-5P and UZM-6, and are represented by the empirical formula: Mmn+Cgh+Rrp+Al(1-x)ExSiyOz where M is an alkali or alkaline earth metal, E is an optional framework element, C organic nitrogen containing cation template, and R is an organic cation crystallization template. The zeolites have at least two x-ray diffraction peaks, one at a d-spacing of 3.9±0.12 Å and one at a d-spacing 8.6±0.20 Å; a tetragonal unit cell; and a micropore volume ranging from about 0.10 cc/g to about 0.18 cc/g.
摘要:
A process is presented for the production of linear alkylbenzenes. The process includes contacting an aromatic compound with an olefin in the presence of a selective zeolite catalyst. The catalyst includes two zeolites combined to improve the linearity, and to produce detergent grade LAB. The two zeolites are selected to limit skeletal isomerization while producing a desired 2-phenyl content for the LAB.
摘要:
A new family of crystalline aluminosilicate zeolites has been synthesized. These zeolites are represented by the empirical formula. Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the propyltrimethylammonium cation and E is a framework element such as gallium. These zeolites are similar to MWW but are characterized by unique x-ray diffraction patterns and compositions and have catalytic properties for carrying out various hydrocarbon conversion processes.
摘要:
Catalytic cracking processes such as fluidized catalytic cracking, naphtha cracking, and olefin cracking are catalyzed by the UZM-35 family of crystalline aluminosilicate zeolitic compositions represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolitic compositions are active and selective in the catalytic cracking of hydrocarbons.
摘要:
Alkylation processes such as the alkylation of aromatics, are catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolites are active and selective in alkylation processes.
摘要:
Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolitic compositions represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolitic compositions are active and selective in the isomerization of xylenes and ethylbenzene.
摘要:
Xylene and ethylbenzene isomerization process is catalyzed by the UZM-35 family of crystalline aluminosilicate zeolites represented by the empirical formula: Mmn+Rr+Al(1-x)ExSiyOz where M represents a combination of potassium and sodium exchangeable cations, R is a singly charged organoammonium cation such as the dimethyldipropylammonium cation and E is a framework element such as gallium. These UZM-35 zeolites are active and selective in the isomerization of xylenes and ethylbenzene.