| 摘要 |
A process for dehydrocyclodimerization using a catalytic composite comprising at least one of a new family of aluminosilicate zeolites designated UZM-44 has been developed. 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 zine, 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. UZM-44 has catalytic properties for carrying processes involving contacting at least one aliphatic hydrocarbon having from 2 to about 6 carbon atoms per molecule with the UZM-44 to produce at least one aromatic hydrocarbon. |
| 主权项 |
1. A process for dehydrocyclodimerization comprising contacting a feed comprising at least one aliphatic hydrocarbon having from 2 to about 6 carbon atoms per molecule with a microporous crystalline zeolitic catalytic composite at dehydrocyclodimerization conditions to produce a product stream comprising at least one aromatic hydrocarbon wherein the catalytic composite is selected from the group consisting of
a. a first microporous crystalline zeolite, UZM-44, having a three-dimensional framework of at least AlO2 and SiO2 tetrahedral units and an empirical composition in the as synthesized and anhydrous basis expressed by an empirical formula of:
NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E) and has a value from approximately 0.05 to 0.5, M represents a metal or metals selected from the group consisting of zinc, Group 1 (IUPAC 1), Group 2 (IUPAC 2), Group 3 (IUPAC 3), the lanthanide series of the periodic table, and any combination thereof, “m” is the mole ratio of M to (Al+E) and has a value from 0 to 0.5, “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents derived from reactants R and Q where R is an A,Ω-dihalogen substituted alkane having 5 carbon atoms and Q is at least one neutral monoamine having 6 or fewer carbon atoms, “t” is the mole ratio of N from the organic structure directing agent or agents to (Al+E) and has a value of from 0.5 to 1.5, E is an element selected from the group consisting of gallium, iron, boron and combinations thereof, “x” is the mole fraction of E and has a value from 0 to about 1.0, “y” is the mole ratio of Si to (Al+E) and varies from greater than 9 to about 25 and “z” is the mole ratio of 0 to (Al+E) and has a value determined by the equation:
z=(n+k·m+3+4·y)/2and characterized in that it has the x-ray diffraction pattern having at least the d-spacings and intensities set forth in Table A:TABLE A2-Thetad(†)I/Io %7.7211.45m8.889.95m9.339.47m12.477.09w-m12.856.88vw14.626.05vw-w15.275.80w15.575.68w16.605.34w17.705.01vw-w18.714.74w-m19.304.59w22.553.94m23.033.86vs23.393.80s24.173.68m25.013.56m26.193.40vw-w26.683.34w-m28.763.10w-m30.072.97w35.722.51vw-w45.082.01w45.831.98vw-w46.771.94vw-w b. a second microporous crystalline zeolite, UZM-44-Modified, having a three-dimensional framework of at least AlO2 and SiO2 tetrahedral units and an empirical composition in the hydrogen form expressed by an empirical formula of
M1aN+Al(1-x)ExSiy′Oz″ where M1 is at least one exchangeable cation selected from the group consisting of alkali, alkaline earth metals, rare earth metals, ammonium ion, hydrogen ion and combinations thereof, “a” is the mole ratio of M1 to (Al+E) and varies from about 0.05 to about 50, “N” is the weighted average valence of M1 and has a value of about +1 to about +3, E is an element selected from the group consisting of gallium, iron, boron, and combinations thereof, x is the mole fraction of E and varies from 0 to 1.0, y′ is the mole ratio of Si to (Al+E) and varies from greater than about 9 to virtually pure silica and z″ is the mole ratio of 0 to (Al+E) and has a value determined by the equation:
z″=(a·N+3+4·y′)/2and is characterized in that it has the x-ray diffraction pattern having at least the d-spacings and intensities set forth in Table B:TABLE B2-Thetad(†)I/Io %7.7111.47m-s8.8410.00m-s9.249.56m11.767.52vw-w12.467.10m14.386.15vw14.646.05w15.265.80w15.525.70w-m16.585.34w17.725.00w-m18.644.76w22.563.94w-m23.063.85vs23.403.80s24.123.69m25.063.55m26.163.40vw-w26.743.33w-m28.823.10w-m30.122.96w35.862.50vw-w45.322.00w46.051.97vw-w46.921.93vw-wand
c. combinations thereof. |
