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US 2002/0164284 A1Published application
Synthesis of MCM-58
AssigneeExxonMobil Oil Corporation
InventorSandeep S. Dhingra
Life of this patent
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Abstract
This invention provides a process for the synthesis of MCM-58 using 1-(1-adamantyl) pyridinium cations as a directing agent. The resultant MCM-58 is useful in a variety of hydrocarbon conversion reactions including toluene disproportionation, transalkylation of aromatics, reaction of paraffins with aromatics, paraffin isomerization and alkylation of aromatics with olefins.
Claims9
A process for synthesizing the crystalline material MCM-58 which comprises the steps of:
- (i) preparing a mixture capable of forming said material, said mixture comprising sources of alkali or alkaline earth metal (M), an oxide of trivalent element (X), an oxide of tetravalent element (Y), hydroxyl (OH—) ions, water and a 1-(1-adamantyl) pyridinium directing agent (R), wherein said mixture has a composition, in terms of mole ratios, within the following ranges:
- 6 YO2/X2O3 = 10-1000 H2O/YO2 = 5-100 OH−/YO2 = 0.05-1 M/YO2 = 0.05-1 R/YO2 = 0.01-0.4
- (ii) maintaining said mixture under sufficient conditions until crystals of said material are formed;
- and
- (iii) recovering said crystalline material from step (ii).
2 more elements
Dependencies are inferred from the claim text.