Synthetic mesoporous crystalline material
AssigneeMobil Oil Corporation
InventorsCharles T. Kresge, Michael E. Leonowicz, Wieslaw J. Roth, Kirk D. Schmitt, James C. Vartuli
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Abstract
This invention relates to a new synthetic composition of porous crystalline material and use thereof as sorbent and in catalytic conversion of organic and inorganic compounds. The new crystalline material exhibits a large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 10 grams benzene/100 grams at 50 torr and 25.degree. C. and a particular, unique X-ray diffraction pattern.
Claims47
A composition of matter comprising an inorganic, porous crystalline phase material exhibiting after calcination an X-ray diffraction pattern including values substantially as shown below:
- ______________________________________ d-spacing, d.sub.n, Angstroms d.sub.n /d.sub.1 Relative Intensity ______________________________________ d.sub.1, .gtoreq. .about.18 1.0 100 d.sub.2 0.87 .+-. 0.06 w-m. ______________________________________
A composition of matter comprising an inorganic, porous crystalline phase material exhibiting after calcination an X-ray diffraction pattern including values substantially as shown in Table 4 of the specification.
A composition of matter comprising a crystalline phase material having a regular arrangement of uniformly-sized pores of at least about 13 Angstrom Units as measured by argon physisorption, and a composition, expressed on an anhydrous basis as follows:
- rRM.sub.n/q (W.sub.a X.sub.b Y.sub.c Z.sub.d O.sub.h)
- wherein R is the total organic material not included in M;
- r is the number of moles or mole fraction of R;
- M is one or more ions;
- n is the charge of the composition excluding M expressed as oxides;
- q is the weighted molar average valence of M;
- n/q is the number of moles or mole fraction of M;
- W is one or more divalent elements;
- X is one or more trivalent elements;
- Y is one or more tetravalent elements;
- Z is one or more pentavalent elements;
- a,b,c, and d are mole fractions of W,X,Y and Z, respectively;
- h is a number of from 1 to 2.5;
- and (a+b+c+d)=1, said crystalline phase exhibiting an X-ray diffraction pattern including values substantially as shown in Table 1 of the specification after calcination.
A method for synthesizing a composition of matter comprising an inorganic, porous crystalline phase material having, after calcination, an X-ray diffraction pattern including values substantially as shown in Table 1 of the specification which comprises the steps of
- (1) combining a primary organic directing agent (R'), optional additional organic directing agent (R"), optional source of alkali or alkaline earth metal (M) ions, and a solvent or solvent mixture such that the mole ratio
- Solvent/(R'.sub.2 O+M.sub.2 O)
- is from about 45 to less than about 100,
- (2) adding one or a combination of oxides of tetravalent element Y, and optionally one or a combination of oxides of elements selected from the group consisting of divalent element W, trivalent element X and pentavalent element Z to the mixture of step (1), such that the mole ratio
- R.sub.2 O/(YO.sub.2 +X.sub.2 O.sub.3 +Z.sub.2 O.sub.5 +WO)
- is from about 0.3 to about 1, where R is the total of R'+R",
- (3) agitating the mixture resulting from step (2) at a temperature of from about 0.degree. C. to about 50.degree. C. and a pH of from about 7 to about 14, and
- (4) crystallizing the product from step (3) at a temperature of from about 50.degree. C. to about 200.degree. C.
Dependencies are inferred from the claim text.