C01B39/08

METHOD FOR PREPARING TS-1 MOLECULAR SIEVE WITH HIERARCHICAL PORES

The present application discloses a method for preparing a hierarchical porous TS-1 molecular sieve comprising using a silicon-titanium ester polymer as both titanium source and silicon source. In the method, silicon and titanium are uniformly connected to a same polymer, and the hydrolysis rates thereof are equivalent during hydrolysis, which can prevent TiO.sub.2 precipitation and reduce the generation of non-framework titanium. Further, the silicon-titanium ester polymer is not only used as both silicon source and titanium source, but also can be used as a mesoporous template in the synthesis process. The obtained TS-1 molecular sieve has mesoporous structure with narrow pore size distribution.

Phyllosilicate compositions designated CIT-13P and methods of preparing the same

The present disclosure is directed to novel phyllosilicate compositions designated CIT-13P and methods of producing and using the same.

Phyllosilicate compositions designated CIT-13P and methods of preparing the same

The present disclosure is directed to novel phyllosilicate compositions designated CIT-13P and methods of producing and using the same.

MFI STRUCTURE MOLECULAR SIEVE RICH IN MESOPORE, PREPARATION METHOD THEREFOR, AND CATALYST CONTAINING SAME AND APPLICATION THEREOF

A molecular sieve of MFI structure has a ratio of n(SiO2)/n(Al2O3) of more than 15 and less than 70. It has a content of phosphorus of 1-15 wt %, calculated as P.sub.2O.sub.5 and based on the dry weight of the molecular sieve and a content of the supported metal in the molecular sieve 1-10 wt % based on the oxide of the supported metal and the dry weight of the molecular sieve. The supported metal is one or two selected from lanthanum and cerium. The volume of mesopores in the molecular sieve represents 40-70% by volume of the total pore volume of the molecular sieve by volume, measured by a nitrogen adsorption BET specific surface area method, and the volume of mesopores means the pore volume of the pores having a diameter of more than 2 nm and less than 100 nm.

Gallium-68 generators and methods for making such generators
11195633 · 2021-12-07 · ·

Gallium-68 generators that are capable of producing gallium-68 from a germanium-68 source material are disclosed. The source material may be a matrix material (e.g., zeolite) in which germanium-68 is isomorphously substituted for central atoms in tetrahedra within the matrix material. Methods for forming gallium-68 generators are also disclosed.

Zeolite synthesis with alkaline earth metal

Provided are a novel form of AFX zeolite, a novel synthesis technique for producing pure phase small pore zeolites, a novel synthesis method for producing a zeolite with an increased Al pair content, a catalyst comprising the AFX zeolite in combination with a metal, and methods of using the same.

Zeolite synthesis with alkaline earth metal

Provided are a novel form of AFX zeolite, a novel synthesis technique for producing pure phase small pore zeolites, a novel synthesis method for producing a zeolite with an increased Al pair content, a catalyst comprising the AFX zeolite in combination with a metal, and methods of using the same.

Germanosilicate compositions of CIT-14 topology and methods of preparing and using the same

The present disclosure is directed to novel germanosilicate compositions and methods of producing and using the same. In particular, this disclosure describes new germanosilicates of CIT-14 topology. The disclosure also describes methods of preparing and using these new germanosilicate compositions as well as the compositions themselves.

Germanosilicate compositions of CIT-14 topology and methods of preparing and using the same

The present disclosure is directed to novel germanosilicate compositions and methods of producing and using the same. In particular, this disclosure describes new germanosilicates of CIT-14 topology. The disclosure also describes methods of preparing and using these new germanosilicate compositions as well as the compositions themselves.

Molecular sieve SSZ-121, its synthesis and use
11161750 · 2021-11-02 · ·

A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-121, is provided. SSZ-121 can be synthesized using 1,3-bis(1-adamantyl)imidazolium cations as a structure directing agent. SSZ-121 may be used in organic compound conversion reactions and/or sorptive processes.