Partial oxidation using molecular sieve ssz-71
AssigneeChevron U.S.A. Inc.
InventorsCong-Yan Chen, Allen Burton, Ann Liang
Life of this patent
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Abstract
The present invention relates to new molecular sieve SSZ-71 prepared using a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation as a structure-directing agent, methods for synthesizing SSZ-71 and processes employing SSZ-71 in a catalyst.
Claims6
A process for oxidation of hydrocarbons comprising contacting said hydrocarbon with an oxidizing agent in the presence of a catalytically effective amount of a titanium-containing molecular sieve for a time and at a temperature effective to oxidize said hydrocarbon, wherein the titanium-containing molecular sieve is a molecular sieve produced by the method comprising:
- (1) preparing an as-synthesized molecular sieve having a composition, as synthesized and in the anhydrous state, in terms of mole ratios as follows:
- YO2/TiO2
- 15-∞
- M2/n/YO2
- 0-0.03
- Q/YO2
- 0.02-0.05
- wherein Y is silicon, germanium or a mixture thereof;
- M is an alkali metal cation, alkaline earth metal cation or mixtures thereof;
- n is the valence of M (i.e., 1 or 2);
- and Q is a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation, the as-synthesized molecular sieve having the X-ray diffraction lines of Table I;
- and
- (2) thermally treating the as-synthesized molecular sieve at a temperature and for a time sufficient to remove the N-benzyl-1,4-diazabicyclo[2.2.2]octane cation from the molecular sieve.
A process for epoxidation of an olefin comprising contacting said olefin with hydrogen peroxide in the presence of a catalytically effective amount of a titanium-containing molecular sieve for a time and at a temperature effective to epoxidize said olefin, wherein the titanium-containing molecular sieve is a molecular sieve produced by the method comprising:
- (1) preparing an as-synthesized molecular sieve having a composition, as synthesized and in the anhydrous state, in terms of mole ratios as follows:
- YO2/TiO2
- 15-∞
- M2/n/YO2
- 0-0.03
- Q/YO2
- 0.02-0.05
- wherein Y is silicon, germanium or a mixture thereof;
- M is an alkali metal cation, alkaline earth metal cation or mixtures thereof;
- n is the valence of M (i.e., 1 or 2);
- and Q is a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation, the as-synthesized molecular sieve having the X-ray diffraction lines of Table I;
- and
- (2) thermally treating the as-synthesized molecular sieve at a temperature and for a time sufficient to remove the N-benzyl-1,4-diazabicyclo[2.2.2]octane cation from the molecular sieve.
A process for oxidizing cyclohexane comprising contacting said cyclohexane with hydrogen peroxide in the presence of a catalytically effective amount of a titanium-containing molecular sieve for a time and at a temperature effective to oxidize said cyclohexane, wherein the titanium-containing molecular sieve is a molecular sieve produced by the method comprising:
- (1) preparing an as-synthesized molecular sieve having a composition, as synthesized and in the anhydrous state, in terms of mole ratios as follows:
- YO2/TiO2
- 15-∞
- M2/n/YO2
- 0-0.03
- Q/YO2
- 0.02-0.05
- wherein Y is silicon, germanium or a mixture thereof;
- M is an alkali metal cation, alkaline earth metal cation or mixtures thereof;
- n is the valence of M (i.e., 1 or 2);
- and Q is a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation, the as-synthesized molecular sieve having the X-ray diffraction lines of Table I;
- and
- (2) thermally treating the as-synthesized molecular sieve at a temperature and for a time sufficient to remove the N-benzyl-1,4-diazabicyclo[2.2.2]octane cation from the molecular sieve.
A catalytic oxidation process comprising contacting under oxidation conditions (1) a reactant which is catalytically oxidizable in the presence of hydrogen peroxide, (2) aqueous hydrogen peroxide and (3) a catalytically effective amount of an oxidation catalyst comprising a molecular sieve produced by the method comprising:
- (1) preparing an as-synthesized molecular sieve having a composition, as synthesized and in the anhydrous state, in terms of mole ratios as follows:
- YO2/TiO2
- 15-∞
- M2/n/YO2
- 0-0.03
- Q/YO2
- 0.02-0.05
- wherein Y is silicon, germanium or a mixture thereof;
- M is an alkali metal cation, alkaline earth metal cation or mixtures thereof;
- n is the valence of M (i.e., 1 or 2);
- and Q is a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation, the as-synthesized molecular sieve having the X-ray diffraction lines of Table I;
- and
- (2) thermally treating the as-synthesized molecular sieve at a temperature and for a time sufficient to remove the N-benzyl-1,4-diazabicyclo[2.2.2]octane cation from the molecular sieve.
A process for the epoxidation of an olefin comprising contacting said olefin with hydrogen peroxide in the presence of a catalytically effective amount of a catalyst comprising a molecular sieve produced by the method comprising:
- (1) preparing an as-synthesized molecular sieve having a composition, as synthesized and in the anhydrous state, in terms of mole ratios as follows:
- YO2/TiO2
- 15-∞
- M2/n/YO2
- 0-0.03
- Q/YO2
- 0.02-0.05
- wherein Y is silicon, germanium or a mixture thereof;
- M is an alkali metal cation, alkaline earth metal cation or mixtures thereof;
- n is the valence of M (i.e., 1 or 2);
- and Q is a N-benzyl-1,4-diazabicyclo[2.2.2]octane cation, the as-synthesized molecular sieve having the X-ray diffraction lines of Table I;
- and
- (2) thermally treating the as-synthesized molecular sieve at a temperature and for a time sufficient to remove the N-benzyl-1,4-diazabicyclo[2.2.2]octane cation from the molecular sieve.
Dependencies are inferred from the claim text.