Synthesis of molecular sieves having the chabazite framework type and their use in the conversion of oxygenates to olefins
申请人:Cao Guang
公开号:US20070043249A1
公开(公告)日:2007-02-22
The synthesis of a crystalline aluminophosphate or silicoaluminophosphate molecular sieve having a chabazite-type framework type is conducted in the presence of an organic directing agent having the formula (I)
[R
1
R
2
R
3
N—R
4
]
+
X
−
(I)
wherein R
1
, R
2
and R
3
are independently selected from the group consisting of alkyl groups having from 1 to 3 carbon atoms and hydroxyalkyl groups having from 1 to 3 carbon atoms; R
4
is selected from the group consisting of 4- to 8-membered cycloalkyl groups, optionally substituted by 1 to 3 alkyl groups having from 1 to 3 carbon atoms; 4- to 8-membered heterocyclic groups having from 1 to 3 heteroatoms, said heterocyclic groups being optionally substituted by 1 to 3 alkyl groups having from 1 to 3 carbon atoms and the heteroatoms in said heterocyclic groups being selected from the group consisting of O, N, and S; and aromatic groups optionally substituted by 1 to 3 alkyl groups, said alkyl groups having from 1 to 3 carbon atoms; and X
−
is an anion.
Synthesis and use of aluminophosphates and silicoaluminophosphates
申请人:——
公开号:US20040215044A1
公开(公告)日:2004-10-28
Disclosed are methods and compositions of synthesis mixtures for the synthesis of aluminophosphates and silicoaluminophosphate molecular sieves, which enable the control and adjustment of the crystal particle size of aluminophosphates and silicoaluminophosphate molecular sieves. The synthesis mixture compositions used have two or more organic templates present at a molar ratio of total template to aluminum of ≦1.25; such a synthesis mixture is susceptible to control of product particle size through variation in the amount of seeds used in the synthesis.
Synthesis of Chabazite-Containing Molecular Sieves and Their Use in the Conversion of Oxygenates to Olefins
申请人:Mertens Machteld M.
公开号:US20120316312A1
公开(公告)日:2012-12-13
In a method of synthesizing a silicoaluminophosphate molecular sieve having 90+% CHA framework-type character, a reaction mixture is prepared comprising sources of water, silicon, aluminum, and phosphorus, as well as an organic template. In one aspect, the reaction mixture is heated at more than 10° C./hour to a crystallization temperature and is retained at the crystallization temperature or within the crystallization temperature range for a crystallization time from 16 hours to 350 hours to produce the silicoaluminophosphate molecular sieve. In another aspect, the reaction mixture is heated at less than 10° C./hour to a crystallization temperature from about 150° C. to about 225° C. and is then retained there for less than 10 hours to produce the silicoaluminophosphate molecular sieve. The molecular sieve can then be recovered from the reaction mixture and, preferably, used in a hydrocarbon conversion process, such as oxygenates to olefins.
Synthesis Of Chabazite Structure-Containing Molecular Sieves And Their Use In The Conversion Of Oxygenates To Olefins
申请人:Cao Guang
公开号:US20090018379A1
公开(公告)日:2009-01-15
In a method of synthesizing a silicoaluminophosphate or aluminophosphate molecular sieve comprising a CHA framework-type material, a synthesis mixture is provided comprising a source of aluminum, a source of phosphorus, optionally a source of silicon and at least one organic template of formula (I):
[R
1
R
2
R
3
R
4
N]
+
X
−
(I)
wherein each of R
1
, R
2
, R
3
, and R
4
is independently an acyclic alkyl group having at least one carbon atom, the total number of carbon atoms in said alkyl groups R
1
, R
2
, R
3
, and R
4
is greater than 8 but less than 16, and X
−
is an anion. The synthesis mixture can then be crystallized to produce the desired molecular sieve.
Actinic energy radiation curable ink-jet ink and ink-jet recording method
申请人:Konica Minolta IJ Technologies, Inc.
公开号:EP2230283A1
公开(公告)日:2010-09-22
An actinic energy radiation curable ink-jet ink comprising an actinic energy radiation polymerizable compound, wherein the actinic energy radiation polymerizable compound comprises a vinyl ether compound, a total content of the vinyl ether compound is 30 % or more by mass, the vinyl ether compound comprises a bis-vinyl ether compound and a multifunctional vinyl compound having three or more vinyl ether groups, 10 to 70 % by mass of the ink is the bis-vinyl ether compound, and 5 to 70 % by mass of the ink is the multifunctional vinyl compound having three or more vinyl ether groups.