EMM-58 zeolite compositions, syntheses, and uses
An aluminosilicate zeolite may have a molar ratio of Si to Al of about 3 to about 10, a monoclinic space group C2/m with unit cell dimensions of a of 13.6 Å+/−5%, b of 21.7 Å+/−5%, c of 6.7 Å+/−5%, and β of 93°+/−3°, 12-ring pores along a c-axis having dimensions of 7 Å+/−5% by 6 Å+/−5%, and 8-ring pores along an a-axis having dimensions of 3 Å+/−5% by 3 Å+/−5%. Said aluminosilicate zeolites may be useful in hydrocarbon conversion processes, selective catalytic reduction of NOx, CO 2 and/or N 2 adsorption, carbonylation reactions, and the monoalkylamine and dialkylamine syntheses.
1. A composition comprising:
an aluminosilicate zeolite having a molar ratio of Si to Al of about 3 to about 10, wherein the aluminosilicate zeolite has (a) a monoclinic space group C2/m with unit cell dimensions of a of 13.6 Å+/−5%, b of 21.7 Å+/−5%, c of 6.7 Å+/−5%, and β of 93°+/−3°, (b) 12-ring pores along a c-axis having dimensions of 7 Å+/−5% by 6 Å+/−5%, and (c) 8-ring pores along an a-axis having dimensions of 3 Å+/−5% by 3 Å+/−5%.
2. The composition of claim 1 having, in an as-synthesized form, an X-ray diffraction pattern including d-spacings (d(Å)) and peak relative percent areas of:
d(Å)
Peak Relative % Area
11.7-11.9
20-40
10.8-11.1
35-55
6.8-7.0
20-40
6.4-6.6
35-55
5.7-5.9
10-30
4.7-4.9
80-100
4.4-4.6
30-50
3.69-3.75
10-30
3.65-3.68
20-40
3.56-3.62
50-70
3.44-3.49
50-70
3.19-3.24
40-60
3.04-3.09
20-40.
3. The composition of claim 1 having, in a calcined form, an X-ray diffraction pattern including d-spacings (d(Å)) and peak relative percent areas of:
d(Å)
Peak Relative % Area
11.5-11.7
80-100
10.8-11.1
60-80
6.7-6.9
40-60
6.3-6.5
20-40
4.71-4.75
60-80
4.42-4.50
15-35
4.20-4.28
15-35
3.65-3.70
10-25
3.60-3.64
10-25
3.54-3.59
25-45
3.40-3.44
35-55
3.17-3.23
45-65
3.02-3.05
15-30.
4. The composition of claim 1 , further comprising one or more selected from the group consisting of: mordenite, a DON-type zeolite, analcime, quartz, and cristobalite.
5. The composition of claim 1 , wherein the aluminosilicate zeolite further comprises a hydrogenating metal.
6. A method comprising: performing a hydrocarbon conversion process in the presence of the composition of claim 1 , wherein the hydrocarbon conversion process is selected from the group consisting of cracking, hydrocracking, disproportionation, alkylation, and isomerization.
7. The composition of claim 1 wherein the aluminosilicate zeolite has coordination sequences of T-atoms of: T1 4 10 19 32 48 69 98 126 154 192; T2 4 11 17 30 48 72 100 125 150 186; T3 4 10 20 32 47 69 96 126 159 191; and T4 4 10 19 31 48 71 97 125 156 189.