Method for synthesizing mesoporous crystalline material
AssigneeMobil Oil Corporation
InventorJeffrey S. Beck
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Abstract
This invention relates to an improved method for synthesizing a new synthetic composition of ultra-large pore crystalline material which can be used as a sorbent or catalyst component for conversion of organic and inorganic compounds. The crystalline material product of this method exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C., and an arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units.
Claims43
A method for synthesizing a composition of matter comprising an inorganic, non-layered, porous crystalline phase material having, after calcination, an arrangement of uniformly-sized pores having diameters of at least about 13 Angstrom Units, exhibiting an X-ray diffraction pattern with at least one peak at a position greater than about 18 Angstrom Units d-spacing and exhibiting a benzene adsorption capacity of greater than about 15 grams benzene per 100 grams at 50 torr and 25.degree. C., which comprises
- (i) preparing a reaction mixture capable of forming said composition, said mixture comprising one or a combination of oxides selected from the group consisting of divalent element, trivalent element, tetravalent element and pentavalent element, organic directing agent and solvent or solvent mixture, said organic directing agent comprising an ion of the formula R.sub.1 R.sub.2 R.sub.3 R.sub.4 Q.sup.30, wherein Q is nitrogen or phosphorus and wherein at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is selected from the group consisting of aryl of from 6 to about 36 carbon atoms, alkyl of from 6 to about 36 carbon atoms and combinations thereof, the remainder of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 being selected from the group consisting of hydrogen, alkyl of from 1 to 5 carbon atoms and combinations thereof,
- (ii) maintaining said mixture under sufficient conditions of pH, temperature and time for formation of said composition of matter and
- (iii) recovering said composition of matter,
- wherein added to said reaction mixture is an auxiliary organic selected from the group consisting of (1) aromatic hydrocarbons and amines of from 5 to 20 carbons and halogen- and C.sub.1 -C.sub.14 alkyl-substituted derivatives thereof, (2) cyclic aliphatic hydrocarbons and amines of from 5 to 20 carbons and halogen- and C.sub.1 -C.sub.14 alkyl-substituted derivatives thereof, (3) polycyclic aliphatic hydrocarbons and amines of from 6 to 20 carbons and halogen- and C.sub.1 -C.sub.14 alkyl-substituted derivatives thereof, (4) straight and branched aliphatic hydrocarbons and amines of from 3 to 16 carbons and halogen-substituted derivatives thereof, and (5) combinations thereof.
A method for synthesizing a composition of matter comprising an inorganic, non-layered, porous crystalline phase material having, after calcination, an arrangement of uniformly-sized pores having diameters of at least about 13 Angstrom Units, exhibiting an X-ray diffraction pattern with at least two peaks at positions greater than about 10 Angstrom Units d-spacing, at least one of which is at a position greater than about 18 Angstrom Units d-spacing, and no peaks at positions less than about 10 Angstrom Units d-spacing with relative intensity greater than about 20% of the strongest peak, which comprises
- (i) preparing a reaction mixture capable of forming said composition, said mixture comprising one or a combination of oxides selected from the group consisting of divalent element, trivalent element, tetravalent element and pentavalent element, organic directing agent and solvent or solvent mixture, said organic directing agent comprising an ion of the formula R.sub.1 R.sub.2 R.sub.3 R.sub.4 Q.sup.30, wherein Q is nitrogen or phosphorus and wherein at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is selected from the group consisting of aryl of from 6 to about 36 carbon atoms, alkyl of from 6 to about 36 carbon atoms and combinations thereof, the remainder of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 being selected from the group consisting of hydrogen, alkyl of from 1 to 5 carbon atoms and combinations thereof,
- (ii) maintaining said mixture under sufficient conditions of pH, temperature and time for formation of said composition of matter and
- (iii) recovering said composition of matter,
- wherein added to said reaction mixture is an auxiliary organic selected from the group consisting of (1) aromatic hydrocarbons and amines of from 5 to 20 carbons and halogen- and C.sub.1 -C.sub.14 alkyl-substituted derivatives thereof, (2) cyclic aliphatic hydrocarbons and amines of from 5 to 20 carbons and halogen- and C.sub.1 -C.sub.14 alkyl-substituted derivatives thereof, (3) polycyclic aliphatic hydrocarbons and amines of from 6 to 20 carbons and halogen- and C.sub.1 -C.sub.14 alkyl-substituted derivatives thereof, (4) straight and branched aliphatic hydrocarbons and amines of from 3 to 16 carbons and halogen-substituted derivatives thereof, and (5) combinations thereof.
Dependencies are inferred from the claim text.