ITQ-34, new crystalline microporous material
AssigneeExxonMobil Research and Engineering Company
InventorsAvelino Corma, Maria Jose Diaz, Fernando Rey, Jose Luis Jorda Moret
Life of this patent
Estimating the term…
Abstract
ITQ-34 (INSTITUTO DE TECNOLOGÍA QUÍMICA number 34) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework. ITQ-34 can be prepared in silicate compositions with an organic structure directing agent. It has a unique X-ray diffraction pattern, which identifies it as a new material. ITQ-34 is stable to calcination in air, absorbs hydrocarbons, and is catalytically active for hydrocarbon conversion.
Claims18
A synthetic crystalline material having a framework of tetrahedral atoms (T) connected by bridging atoms, the tetrahedral atom framework being defined by connecting the nearest tetrahedral (T) atoms in the manner shown in Table 1 of the specification.
A synthetic porous crystalline material, as synthesized, characterized by an X-ray diffraction pattern including the peaks as set forth below:
- d-spacing (Å)
- relative intensity
- 11.2-10.9
- 20-70
- 10.3-10.0
- 20-70
- 9.53-9.33
- 5-50
- 7.97-7.83
- 60-100
- 6.06-5.98
- 5-50
- 5.57-5.51
- 20-70
- 5.38-5.32
- 5-50
- 4.73-4.69
- 5-50
- 4.18-4.14
- 30-80
- 4.09-4.05
- 5-50
- 3.90-3.86
- 30-80
- 3.78-3.74
- 20-70
- 3.71-3.67
- 30-80
- 3.37-3.35
- 5-50
- 2.90-2.88
- 5-50
- 2.54-2.52
- 5-50
- 2.32-2.30
- 5-50.
A calcined dehydrated material characterized by an X-ray diffraction pattern including the most significant lines as set forth below
- d-spacing (Å)
- relative intensity
- 12.8-12.5
- 30-80
- 11.2-11.0
- 60-100
- 10.3-10.1
- 5-50
- 9.57-9.37
- 5-40
- 8.41-8.25
- 5-40
- 8.01-7.87
- 20-70
- 5.79-5.71
- 5-40
- 5.57-5.51
- 5-50
- 4.10-4.06
- 5-40
- 3.91-3.87
- 5-50
- 3.80-3.76
- 5-40
- 3.71-3.67
- 5-50.
A method of synthesizing a crystalline silicate composition of ITQ-34 having the diffraction pattern as set forth below
- d-spacing (Å)
- relative intensity
- 11.2-10.9
- 20-70
- 10.3-10.0
- 20-70
- 9.53-9.33
- 5-50
- 7.97-7.83
- 60-100
- 6.06-5.98
- 5-50
- 5.57-5.51
- 20-70
- 5.38-5.32
- 5-50
- 4.73-4.69
- 5-50
- 4.18-4.14
- 30-80
- 4.09-4.05
- 5-50
- 3.90-3.86
- 30-80
- 3.78-3.74
- 20-70
- 3.71-3.67
- 30-80
- 3.37-3.35
- 5-50
- 2.90-2.88
- 5-50
- 2.54-2.52
- 5-50
- 2.32-2.30
- 5-50
- by mixing together a source of tetravalent element Y, where Y is Si alone or in combination with Ge and/or Ti, an organic structure directing agent R, water, and optionally a source of metal X and optionally a source of fluoride F, the mixture having a composition, in terms of mole ratios, within the following ranges:
- R/YO2
- 0.01-1
- H2O/YO2
- 2-50
- X/YO2
- 0-0.2
- F/YO2
- 0-2
- and where X is any trivalent metal capable of tetrahedral coordination.
Dependencies are inferred from the claim text.