摘要:
A new crystalline aluminosilicate zeolite comprising a MTT framework has been synthesized that has been designated UZM-53. This zeolite is represented by the empirical formula: M+mRrAl1−xExSiyOz where M represents sodium, potassium or a combination of sodium and potassium cations, R is the organic structure directing agent or agents derived from reactants R1 and R2 where R1 is diisopropanolamine and R2 is a chelating diamine, and E is an element selected from the group consisting of gallium, iron, boron and mixtures thereof. Catalysts made from UZM-53 have utility in various hydrocarbon conversion reactions such as oligomerization.
摘要:
Novel 1-oxa-4-azonium cyclohexane salts are described. These compounds can be used as structure directing agents, and they overcome many of the typical problems associated with OSDA synthesis and subsequent zeolite synthesis. Methods for synthesis of the 1-oxa-4-azonium cyclohexane salts from a variety of starting materials are also described. A substituted hydrocarbon is added to water to form a mixture, and a 1-oxa-4-azacyclohexane derivative is then added. The reaction mixture stirred until a solution containing the 1-oxa-4-azonium cyclohexane salt is obtained.
摘要:
A method for synthesizing an aluminophosphate based molecular sieve is described. The method may include the steps of: (a) preparing an aqueous mixture comprising water, a substituted hydrocarbon, and a 1-oxa-4-azacyclohexane derivative; (b) reacting the aqueous mixture; (c) obtaining a solution comprising an organo-1-oxa-4-azoniumcyclohexane compound; (d) forming a reaction mixture comprising reactive sources of Al, and P, and the solution; and (e) heating the reaction mixture to form the molecular sieve.
摘要:
A method for synthesizing a zeolite includes the steps of: (a) preparing an aqueous mixture comprising water, a substituted hydrocarbon and an amine; (b) reacting the aqueous mixture; (c) obtaining a solution comprising an organoammonium product; (d) forming a reaction mixture including reactive sources of M, Al, Si, optionally seeds of a layered material L, and the solution, wherein M is a metal; and (e) heating the reaction mixture to form the zeolite. The substituted hydrocarbon can be an α,ω-dihalogen substituted alkane, and the amine is preferably essentially incapable of undergoing pyramidal inversion.
摘要:
A new family of coherently grown composites of TUN and IMF zeotypes have been synthesized. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zinc, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. These zeolites are similar to TNU-9 and IM-5 but are characterized by unique compositions and synthesis procedures and have catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for carrying out various separations.
摘要:
A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts for dehydrocyclodimerization reactions. These zeolites are represented by the empirical formula. NanMmn+RrQqAl1-xExSiyOz where M represents zinc or a metal or metals from Group 1, Group 2, Group 3 or the lanthanide series of the periodic table, R is an A,Ω-dihalosubstituted paraffin such as 1,4-dibromobutane, Q is a neutral amine containing 5 or fewer carbon atoms such as 1-methylpyrrolidine and E is a framework element such as gallium. The process involves contacting at least one aliphatic hydrocarbon having from 2 to about 6 carbon atoms per molecule with the coherently grown composites of TUN and IMF zeotypes to produce at least one aromatic hydrocarbon.
摘要:
A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts in processes for converting at least one aliphatic hydrocarbon having from 1 to about 4 carbon atoms in a feedstream to provide at least one aromatic hydrocarbon. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where M represents zinc or a metal or metals from Group 1, Group 2, Group 3 or the lanthanide series of the periodic table, T is the organic structure directing agent or agents and E is a framework element such as gallium. The process involves contacting a low carbon number aliphatic hydrocarbon with the coherently grown composite of TUN and IMF zeotypes to produce at least an aromatic.
摘要:
A new family of aluminosilicate zeolites designated UZM-44 has been synthesized. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zinc, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. These zeolites are similar to IM-5 but are characterized by unique compositions and synthesis procedures and have catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for carrying out various separations.
摘要:
A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts in processes for converting at least one aliphatic hydrocarbon having from 1 to about 4 carbon atoms in a feedstream to provide at least one aromatic hydrocarbon. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where M represents zinc or a metal or metals from Group 1, Group 2, Group 3 or the lanthanide series of the periodic table, T is the organic structure directing agent or agents and E is a framework element such as gallium. The process involves contacting a low carbon number aliphatic hydrocarbon with the coherently grown composite of TUN and IMF zeotypes to produce at least an aromatic.
摘要:
A catalyst for the conversion of at least one low carbon number aliphatic hydrocarbon in a feedstream to provide at least one aromatic hydrocarbon, the catalyst comprising a zeolite and a promoter metal M, the zeolite characterized by the retention of greater than 40% of the tetrahedral aluminum sites in the zeolite following calcination of the catalyst in air at 750° C. for 3 hours when compared to the amount of tetrahedral aluminum in the same catalyst after calcination in air at 500° C. for 3 hours.