Molecular sieve intergrowths of cha and aft having an “
Molecular sieves comprising intergrowths of cha and aft having an “sfw-GME tail”, at least one structure directing agent (SDA) within the framework of the molecular sieve, an intergrowth of CHA and GME framework structures, cha cavities, and aft cavities are described. A first SDA comprising either an N,N-dimethyl-3,5-dimethylpiperidinium cation or a N,N-diethyl-2,6-dimethylpiperidinium cation is required. A second SDA, which can further be present, is a CHA or an SFW generating cation. The amount of the second SDA-2 used can change the proportion of the components in the cha-aft-“sfw-GME tail”. Activated molecular sieves formed from SDA containing molecular sieves are also described. Compositions for preparing these molecular sieves are described. Methods of preparing a SDA containing JMZ-11, an activated JMZ-11, and metal containing activated JMZ-11 are described. Methods of using activated JMZ-11 and metal containing activated JMZ-11 in a variety of processes, such as treating exhaust gases and converting methanol to olefins are described.
1. A composition comprising the following materials in the corresponding ratios:
Components
Ratio
Preferred Ratio
MeO 2 /A 2 O 3
10-100
20-50
(SDA-1 + SDA-2 +
1-6
1.0-3.0
SDA-3)/A 2 O 3
SDA-2/SDA-1
0-100
0.00-15.0
SDA-3/SDA-1
0-100
0.00-15.0
X 2 O/A 2 O 3
5.0-20.0
7.5-15
[OH − ]/A 2 O 3
10.0-30.0
16.0-30
H 2 O/A 2 O 3
100-2000
200-800
where Me is Si, Ge, Sn, Ti or combinations thereof and is calculated as being in the oxide form (MeO 2 ); A is Al, Fe, Cr, B, Ga or combinations thereof and is calculated as being in the oxide form (A 2 O 3 ); X is Na, K or a combination thereof and is calculated as being in the oxide form (X 2 O); [OH − ] is calculated being as the sum of hydroxide ions brought by all components; SDA-1 is an N,N-dimethyl-3,5-dimethylpiperidinium cation or an N,N-diethyl-2,6-dimethylpiperidinium cation, SDA-2 is a CHA generating SDA, selected from a trimethyladmandylammonium cation, a tetraethylammonium cation, a trimethylbenzylammonium cation, a trimethylcyclohexylammonium cation, a trimethyl(cyclohexylmethyl)ammonium, and a phenyltrimethylammonium cation and SDA-3 is a AFX generating SDA, selected from a 1,3-bis(1-adamantyl)imidazolium, 1,1-(butane-1,4-diyl)bis-(quinuclidin-1-ium), 1,1-(pentane-1,5-diyl)bis-(quinuclidin-1-ium), 1,1′-(1,4-butanediyl)bis(4-aza-1-azoniabicyclo[2.2.2]octane), and 1,1′-(1,5-pentanediyl)bis(4-aza-1-azoniabicyclo[2.2.2]octane).
2. The composition of claim 1 , wherein the composition further comprises from about 0.1 to about 10% w/w of seed crystals, wherein the seed crystals comprise a crystalline molecular sieve having an AEI, AFX, AFT, CHA, GME or an SFW framework and/or an intergrowth having a JMZ-11 framework.
3. The composition of claim 1 , wherein the composition further comprises from about 0.1 to about 10% w/w of seed crystals, wherein the seed crystals comprise a crystalline molecular sieve having an AEI framework.
4. The composition of claim 1 , wherein the composition further comprises from about 0.1 to about 10% w/w of seed crystals, wherein the seed crystals comprise a crystalline molecular sieve having a CHA framework.