Microporous crystalline silicoalumino/(metallo) aluminophosphate molecular sieve and method of synthesis thereof
AssigneeBharat Petroleum Corporation Limited
InventorsShivanand Pai, Bharat Lakshman Newalkar, Nettem Venkateswarlu Choudary
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Abstract
A novel microporous crystalline silicoalumino/(metallo)aluminophosphate molecular sieve framework (designated as BPC-1), having in its as-synthesized form, an X-ray diffraction pattern including the lines listed in Table 1, and method of its synthesis using 4-dimethylaminopyridine as organic templating agent in fluoride medium under microwave-hydrothermal conditions.
Claims20
A microporous crystalline silicoalumino/(metallo) aluminophosphate molecular sieve framework, designated as BPC-1, prepared by crystallization under microwave-hydrothermal conditions having a chemical composition expressed in terms of molar ratio:
- Al2O3:1.0±0.2P2O5:XSiO2:yMeO:zF:mR
- wherein
- x=0 to 0.15;
- y=0 to 0.2;
- z=0.05 to 0.80;
- m=0.3 to 5;
- R represents at least one organic aromatic templating agent;
- and
- Me represents at least one element, other than aluminum, phosphorus or silicon, which is capable of forming an oxide in coordination with tetrahedra of AlO2 and PO2 oxide structural units in the molecular sieve.
A method of synthesis of microporous crystalline silicoalumino/(metallo) aluminophosphate molecular sieve framework, designated as BPC-1, of chemical composition expressed in terms of molar ratio:
- Al2O3:1.0±0.2P2O5:xSiO2:yMeO:zF:mR
- wherein
- x=0 to 0.15;
- y=0 to 0.2;
- z=0.05 to 0.80;
- m=0.3 to 5.0;
- R represents at least one organic aromatic templating agent;
- and Me represents at least one element, other than aluminum, phosphorus or silicon, which is capable of forming an oxide in coordination with tetrahedra of AlO2 and PO2 oxide structural units in the molecular sieve
- comprising the steps of:
- (a) preparing a reaction mixture comprising water, reactive sources of aluminum and phosphorus, a source of fluoride ions, optionally a source of metal other than aluminum and phosphorous or a silica source, and at least one organic aromatic templating in the molar ratio of
- Al2O3:P2O5:0.5HF:0.12-3.0R:10-100H2O
- wherein R represents at least one organic aromatic templating agent;
- (b) inducing crystallization of the said reaction mixture under microwave hydrothermal conditions to obtain crystalline material;
- and
- (c) recovering the said crystalline material from the reaction mixture.
Dependencies are inferred from the claim text.