摘要:
Methods for forming zeolites having a substantially uniform distribution of zeolitic crystallites are provided. In a method, a source of microscopically homogeneous amorphous silica alumina is prepared. Pores in the microscopically homogeneous amorphous silica alumina are filled with a crystallization agent. Then, the microscopically homogeneous amorphous silica alumina is converted to a zeolite with a substantially uniform distribution of zeolitic crystallites.
摘要:
This invention relates to a new family of crystalline microporous zeolite designated the UZM-29 family. These zeolites are represented by the empirical formula: Mmn+R+rAl1-xExSiyOz UZM-29 has the PHI structure type topology but is thermally stable up to a temperature of at least 350° C. The UZM-29 family of zeolite can be used in various hydrocarbon conversion processes such as, isomerization of butane.
摘要翻译:本发明涉及一种称为UZM-29族的新型结晶微孔沸石系列。 这些沸石由经验式表示:Mmn + R + rAl1-xExSiyOz UZM-29具有PHI结构类型拓扑,但在至少350℃的温度下是热稳定的。可以使用UZM-29族沸石 在各种烃转化过程中,如丁烷的异构化。
摘要:
Embodiments of a process for recovery of nano zeolites from an aqueous suspension are provided. The process comprises the steps of applying centrifugal force to the aqueous suspension to separate a supernatant phase from a solid phase that comprises the nano zeolites and residuals. The solid phase is contacted with a solution effective to dissolve or digest the residuals and to agglomerate the nano zeolites forming agglomerated nano zeolites. The solution is filtered to recover the agglomerated nano zeolites.
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.
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:
A new family of crystalline aluminosilicate zeolitic compositions, UZM-35 compositions, has been synthesized. These zeolitic compositions are represented by the empirical formula. Mmn+Rr+Al1-xExSiyOz 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 compositions comprise a MSE zeolite, a MFI zeolite and an ERI zeolite. The compositions are similar to MCM-68 but are characterized by unique x-ray diffraction patterns and have catalytic properties for carrying out various hydrocarbon conversion processes.
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:
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:
Catalytic cracking processes such as fluidized catalytic cracking, naphtha cracking, and olefin cracking 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 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.